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Category: Comparisons

  • Bali eSIM vs Telstra, Optus, Vodafone roaming: the 2026 cost check

    Bali eSIM vs Telstra, Optus, Vodafone roaming: the 2026 cost check

    Last updated 15 April 2026 · 3 min read

    An eSIM saves an Australian traveller $23-58 AUD on a week in Bali. More on a two-week trip. Here’s the maths.

    Bali is the single most popular international destination for Australians. Which means the question “should I just turn on Telstra roaming or get an eSIM?” gets asked about four million times a year.

    This is the short answer, with the numbers.

    The bottom line

    For 7 days in Bali at normal usage (5-8 GB):

    Option Total cost (AUD) Auto-activates?
    Travelren Bali eSIM (5 GB / 7 days) $12 No, you control it
    Travelren Bali eSIM (10 GB / 30 days) $20 No, you control it
    Telstra International Day Pass $70 Yes, on first data use
    Optus Yes Day Pass $35 Yes, on first data use
    Vodafone $5 Roaming $35 Yes, on first data use

    The eSIM is $23-58 AUD cheaper than the cheapest AU telco option.

    How each Australian telco handles Bali

    Telstra International Day Pass — $10 AUD/day. Triggers when your phone uses data overseas. You get your full domestic data allowance at 4G/5G speed. Seven days = $70.

    Optus Yes Day Pass — $5 AUD/day. Triggers on first data use. Uses your domestic allowance, capped per month. Seven days = $35.

    Vodafone $5 Roaming — $5 AUD/day. Same auto-trigger model as Optus. Uses domestic allowance. Seven days = $35.

    All three piggyback on Indonesian carriers (Telkomsel or Indosat) — the same networks a Bali eSIM uses. Signal quality is identical. What differs is price, control, and the surprise-bill failure mode.

    The surprise-bill trap

    The scariest thing about roaming day passes isn’t the daily fee. It’s what happens if the pack fails to activate.

    If your phone uses data overseas without an active day pass, Australian telcos charge per-megabyte rates that run into dollars per megabyte. One weekend of background app activity without a day pass can produce a four-figure bill. It’s rare but it happens — usually when the pack doesn’t auto-activate because of a settings glitch, or when the traveller assumed “roaming is off” meant “roaming is free.”

    An eSIM doesn’t have this failure mode. It’s prepaid. When the data runs out, it stops working — it doesn’t keep charging.

    When Telstra’s day pass is actually worth it

    Three scenarios where the AU telco option beats the eSIM:

    1. Short business trips where your company pays. The extra $40 isn’t your problem and you keep your Australian number live for client calls.

    2. First-time international travellers who are already stressed about the trip. The mental cost of learning dual-SIM settings can outweigh the $40 saving.

    3. Heavy-SMS users whose bank or work accounts SMS two-factor codes to their Australian number constantly. You can solve this with a dual-SIM setup (keep the AU SIM live with roaming off, data on the eSIM) but some travellers find that fiddly.

    For everyone else — holidaymakers, couples, families, digital nomads — the eSIM is the right answer.

    Two-week and longer trips

    The savings compound. For a 14-day Bali trip:

    • Telstra day pass: $140 AUD
    • Optus / Vodafone day pass: $70 AUD
    • Travelren Bali eSIM (10 GB / 30 days): $20 AUD

    You save $50-120 on a two-week trip. That’s a dinner at a Seminyak beach club and a spa session with change left over.

    What about the “forgot to turn it off” tax?

    A minor but real Telstra quirk: if you land back in Sydney and your phone uses data before the day pass expires (in the taxi home, at the luggage carousel), you can get charged for another day pass on Australian soil. Optus and Vodafone have similar edge cases. eSIMs don’t do this — the plan ends, the data stops.

    What Australians specifically should know

    Bali is the cheapest eSIM country for Australian travellers. Because the route between AU carriers and Telkomsel is well-established and travel volume is huge, Bali eSIM pricing is competitive. A week of Bali data on Travelren is about the same price as a Big Mac meal in Canggu.

    Your phone is almost certainly eSIM-compatible. Any iPhone bought in Australia from 2018 onwards (XS and newer) has eSIM. Any Samsung Galaxy S20 or newer. Check yours in 60 seconds at our device check tool.

    Keep your Australian SIM active for bank SMS. Westpac, Commonwealth, ANZ, NAB — all of them SMS 2FA codes to your Australian number for some transactions. Dual SIM (eSIM for data, Australian SIM on second line with roaming off) gets you the cheap data without losing the SMS.

    What to do next

    1. Check your phone works with eSIM (60 seconds) 2. Browse Bali plans and pick 5-10 GB based on trip length 3. Install the eSIM on home Wi-Fi before you fly 4. Land in Denpasar, switch your data line to Indonesia, done

    If you want the full setup guide including network comparison, data usage breakdown, and install troubleshooting, read our Bali eSIM hub guide.

    Travelling to Bali from somewhere else? UK · US · NZ

    Frequently asked questions

    Does Telstra's day pass work in Bali?

    Yes. Telstra has a roaming agreement with Telkomsel and Indosat. The day pass activates automatically when your phone uses data in Bali.

    Will my Australian bank's SMS codes still arrive if I'm using a Bali eSIM?

    Yes, if you keep your Australian SIM active on a second line. Turn off data roaming on the AU line but leave voice and SMS enabled. Most iPhones (XS+) and recent Androids support this dual-SIM setup natively.

    Is there a reason to pay Telstra $10/day when a Bali eSIM is $2/day?

    Only if convenience is worth $56 to you over a week. The phone call and SMS functions on your Australian number are the main thing you're paying for — but dual SIM preserves those for free.

    Do Optus and Vodafone work better than Telstra in Bali?

    All three use the same underlying Indonesian carriers. Signal quality is identical. The only real difference is price.

    Can I pay Telstra in Bali with my Australian dollars if I'm a Boost Mobile customer?

    Boost Mobile (Telstra's prepaid brand) doesn't offer international roaming packs — you'd need to switch to a Telstra postpaid plan or use an eSIM. Most Boost customers use eSIMs for this reason.

  • Bali eSIM vs EE, Three, Vodafone UK roaming: real 2026 costs

    Bali eSIM vs EE, Three, Vodafone UK roaming: real 2026 costs

    Last updated 15 April 2026 · 3 min read

    A British traveller saves £30-45 on a week in Bali by using an eSIM over their home telco’s roaming pack.

    Bali isn’t in the EU, it isn’t on any UK telco’s “free roaming” list, and the prices most networks charge for Indonesian data are genuinely expensive. This is how to avoid them.

    The bottom line

    For 7 days in Bali at normal usage (5-8 GB):

    Option Total cost (GBP)
    Travelren Bali eSIM (5 GB / 7 days) £6
    Travelren Bali eSIM (10 GB / 30 days) £10
    EE Roam Abroad (Bali is outside the free zones) £42-56
    Three daily roaming for Indonesia £35
    Vodafone Global Roaming Plus £49

    The eSIM is £29-43 cheaper than the cheapest UK telco option.

    How each UK telco handles Bali

    EE — Bali is not in EE’s free “Roam Like at Home” zone or in the expanded “Roam Abroad Pass” inclusions for most plans. You pay £6-8 per day for data access to Indonesia. Seven days = £42-56. New plans from late 2025 have tightened Roam Abroad to exclude Indonesia entirely on some tiers, so always check your specific plan before you fly.

    Three — Three’s Go Roam scheme historically included Indonesia but removed it after Brexit-era regulatory changes in 2021. Bali is now charged at standard daily roaming rates — around £5 per day for data. Seven days = £35.

    Vodafone UK — Global Roaming Plus is £7 per day for destinations outside Europe. Bali sits in this tier. Seven days = £49.

    All three UK telcos piggyback on Telkomsel or Indosat in Bali — same networks a local eSIM uses. Signal quality is identical. What changes is price.

    The bill-shock risk

    UK telcos apply automatic roaming charges the moment your phone uses data in Bali — unless you’ve actively disabled international data or added a specific travel plan beforehand.

    If you arrive in Denpasar with data roaming on but no active travel plan, you can be charged per-megabyte rates of £5-10 per MB on some networks. A couple of days of background app activity (email sync, cloud backups, app updates) can produce a bill in the low three figures.

    An eSIM doesn’t have this failure mode. It’s prepaid. When the data runs out, it stops.

    When the UK telco option is worth it

    Three scenarios where paying your UK network is reasonable:

    1. Short business trips where your employer pays. £56 for a week of Telstra-equivalent convenience isn’t the end of the world.

    2. Frequent traveller schemes — if you’re on EE’s Essential Plus or Full Works plan and Bali happens to be included that quarter (inclusions change, check before you fly), the day pass might be free or near-free.

    3. Heavy-SMS users — if your UK bank (Monzo, Starling, Revolut, traditional high-street banks) sends SMS codes frequently for transactions, keeping your UK number active on a second line is essential. Luckily, dual SIM solves this for free.

    For holiday travellers, the eSIM wins every time.

    Two-week and longer trips

    Over 14 days in Bali:

    • EE Roam Abroad — £84-112
    • Three daily roaming — £70
    • Vodafone Global Roaming Plus — £98
    • Travelren Bali eSIM (10 GB / 30 days) — £10

    Savings are £60-102 on a two-week trip. That’s a Balinese cooking class, a sunset dinner at Rock Bar, and change.

    What Brits specifically should know

    Bali is not covered by any UK roaming freebie. Since the Brexit regulatory shift, most UK telcos have quietly removed Indonesia from their bundled overseas inclusions. If a friend says “my EE plan covers Bali,” ask when they last checked — it probably doesn’t.

    iPhone XS or newer, Samsung Galaxy S20 or newer, Pixel 3 or newer — all eSIM-compatible. Most UK phones bought in the last four years will work. Check yours at our device check tool.

    Keep your UK SIM for bank 2FA. High-street UK banks SMS 2FA codes for large transactions abroad. Dual SIM (eSIM for data, UK SIM with roaming off for calls/SMS) keeps this working for free.

    The Boots pharmacy / hotel voucher trap. Some Bali hotels advertise “free UK calls” via hotel Wi-Fi calling. It works, but only if your UK telco supports Wi-Fi calling on your plan. Not all do. Don’t rely on it — use WhatsApp.

    What to do next

    1. Check your phone works with eSIM (60 seconds) 2. Browse Bali plans and pick 5-10 GB based on trip length 3. Install the eSIM on home Wi-Fi before you fly 4. Land in Denpasar, switch data to your Indonesia line, done

    If you want the full setup guide including network comparison, data usage breakdown, and install troubleshooting, read our Bali eSIM hub guide.

    Travelling to Bali from somewhere else? Australia · US · NZ

    Frequently asked questions

    Does EE's Roam Abroad cover Bali in 2026?

    No, Bali is not included in EE's free Roam Abroad zones. You pay a daily surcharge (£6-8) to access data in Indonesia on most plans. Always check your specific plan's terms before you fly — inclusions change.

    Can I use Three's Go Roam in Bali?

    Not for free. Three removed Indonesia from Go Roam in 2021. You'll be charged standard daily rates.

    Is it cheaper to buy a SIM at Bali airport than use my UK phone plan?

    Yes, but the hassle usually isn't worth it. A physical tourist SIM at Denpasar airport runs £8-12 for a week. An eSIM costs the same or less and doesn't require swapping SIMs or queuing.

    Will my UK bank SMS codes still work with a Bali eSIM?

    Yes, if you keep your UK SIM active on a second line with data roaming off. SMS and calls still reach your UK number for free in this configuration.

    What if I'm with a smaller UK network like Giffgaff or Smarty?

    Giffgaff's Goody bag and Smarty plans generally don't include Indonesia roaming. You'd pay standard per-MB rates (often £1-3/MB), making an eSIM essentially mandatory. Check with your specific provider before you fly.

  • Bali eSIM vs T-Mobile, Verizon, AT&T roaming: 2026 cost check

    Bali eSIM vs T-Mobile, Verizon, AT&T roaming: 2026 cost check

    Last updated 15 April 2026 · 3 min read

    An American traveler saves $30-70 on a week of data in Bali by using an eSIM instead of their carrier’s roaming plan.

    If you’re on T-Mobile, your phone already works in Bali at 2G speeds — which is close to useless for modern apps. Everyone else pays serious money to Verizon or AT&T for day passes. Here’s the real math.

    The bottom line

    For 7 days in Bali at normal usage (5-8 GB):

    Option Total cost (USD)
    Travelren Bali eSIM (5 GB / 7 days) $8
    Travelren Bali eSIM (10 GB / 30 days) $13
    T-Mobile Magenta (2G unlimited, free) $0 (but 2G = unusable)
    T-Mobile high-speed day pass $5/day = $35
    Verizon International Travel Pass $10/day = $70
    AT&T International Day Pass $12/day = $84

    The eSIM is $27-76 cheaper than the paid US carrier options.

    How each US carrier handles Bali

    T-Mobile — Magenta and Go5G plans include unlimited data in over 215 countries, Indonesia included. The catch: it’s capped at 2G speeds (about 256 Kbps). That’s fine for iMessage and WhatsApp text, useless for Google Maps, Uber, Instagram, or video calls. Upgrade to high-speed for $5/day, and a week of usable data costs $35.

    Verizon International Travel Pass — $10/day. You get 2 GB of high-speed data, then unlimited 3G speeds after. Seven days = $70. Auto-triggers when your phone uses data overseas.

    AT&T International Day Pass — $12/day. Unlimited data at domestic plan speeds (with fair-use throttling after about 2 GB/day). Seven days = $84. Auto-triggers on first use.

    All three use the same Indonesian networks (Telkomsel and Indosat) that a local Bali eSIM uses. Signal quality is identical. What differs is price, speed tier, and how surprise-triggers work.

    T-Mobile is almost an exception

    T-Mobile’s “free international data” claim is the closest any US carrier comes to making an eSIM unnecessary. For travelers who genuinely only need messaging and email, the 2G speed is workable.

    But: Google Maps, Uber, Instagram, TikTok, Spotify, and video calls all need more than 2G. If you plan to use any of these — and you will — you need either the $5/day upgrade or an eSIM. At that point, the math is identical to Verizon and AT&T customers: the eSIM wins.

    The bill-shock risk

    Verizon and AT&T both auto-trigger Day Pass charges the moment your phone uses any data abroad. If you meant to use Wi-Fi but your iPhone quietly fell back to cellular for thirty seconds, you’re charged for a full day.

    Bigger risk: if the day pass fails to activate (network glitch, settings issue, carrier misconfiguration), you can be charged per-MB rates that run into dollars. A handful of emails downloaded in the background has produced four-figure bills.

    An eSIM is prepaid. When the data runs out, it stops. No surprise bills.

    When the US carrier option is worth it

    Three scenarios where paying your US carrier makes sense:

    1. Business trips with expense accounts. Your company pays, you keep your US number live for work calls and 2FA.

    2. T-Mobile users doing messaging-only trips. If your week in Bali is just checking email and WhatsApp, the free 2G is genuinely fine. Add the $5/day only for travel days when you need Maps.

    3. Frequent flyers with T-Mobile Go5G Next or Verizon’s Unlimited Plus plans — some tiers include free or reduced international data that makes the cost-gap smaller. Always check your current plan’s international benefits.

    For most holiday travelers, an eSIM still wins.

    Two-week and longer trips

    Over 14 days in Bali:

    • T-Mobile high-speed day pass — $70
    • Verizon International Travel Pass — $140
    • AT&T International Day Pass — $168
    • Travelren Bali eSIM (10 GB / 30 days) — $13

    Savings are $57-155 on a two-week trip. That’s a full-day Bali boat charter and dinner at Locavore’s tasting menu.

    What Americans specifically should know

    Bali is eSIM-friendly but your carrier’s international plan may not be. Verizon and AT&T treat Indonesia as a “Day Pass” destination — not a “Cruise and Flight” destination or a regional bundle. You can’t combine it with most existing travel add-ons.

    Check if your phone is eSIM-compatible. iPhone XS (2018) and newer — yes. Samsung Galaxy S20 and newer — yes. Pixel 3 and newer — yes. Since 2023, all US iPhones are eSIM-only (no physical SIM slot), which actually makes this easier. Check yours at our device check tool.

    Your US number stays live with dual SIM. Keep the US carrier active on your second line (or, for iPhone 14+, on your primary eSIM slot) with data roaming off. Voice calls, SMS, and 2FA codes all still reach your US number at no cost.

    If you’re on a prepaid MVNO (Mint, Cricket, Metro by T-Mobile, Visible), international roaming is usually either blocked or prohibitively expensive. eSIM is essentially mandatory. Travelers on MVNOs save the most because there’s no meaningful carrier alternative.

    What to do next

    1. Check your phone works with eSIM (60 seconds) 2. Browse Bali plans and pick 5-10 GB based on trip length 3. Install the eSIM on home Wi-Fi before you fly 4. Land in Denpasar, switch data to your Indonesia line, done

    If you want the full setup guide with network comparison, data usage breakdown, and install troubleshooting, read our Bali eSIM hub guide.

    Traveling to Bali from somewhere else? Australia · UK · NZ

    Frequently asked questions

    Does T-Mobile work in Bali?

    Yes, at 2G speeds for free on most Magenta/Go5G plans. Upgrade to $5/day for 4G/5G speeds. For anything beyond iMessage and basic email, you need the upgrade or an eSIM.

    Is Verizon's Travel Pass worth $70 for a week in Bali?

    Only if convenience is worth $60 to you. An eSIM gives identical speed on identical networks for $8-13.

    Can I use an eSIM if I have an iPhone 14 or 15 with no physical SIM slot?

    Yes, and it's actually easier. Your primary US line is already an eSIM, and you can add a second eSIM for Indonesia. Dual-eSIM is supported on all iPhone 14+ models.

    Will my US bank's 2FA codes still work with a Bali eSIM?

    Yes, if you keep your US carrier active on a second line with data roaming off. SMS and calls to your US number still work, free.

    What if I'm with Mint, Cricket, or Visible?

    Most US MVNOs don't offer international roaming, or charge prohibitive per-MB rates. An eSIM is your only practical option — and because you don't have a carrier alternative, the savings are even larger.

  • Bali eSIM vs Spark, One NZ, 2degrees roaming: 2026 cost check

    Bali eSIM vs Spark, One NZ, 2degrees roaming: 2026 cost check

    Last updated 15 April 2026 · 3 min read

    A Kiwi traveller saves $45-90 NZD on a week in Bali by using an eSIM instead of their home telco’s daily roaming pack.

    Bali is the most-booked international destination from Auckland after Australia. But unlike the trans-Tasman hop, none of the three main NZ telcos include Indonesia in any free-roaming zone. You pay daily rates — and they add up fast.

    Here’s the maths.

    The bottom line

    For 7 days in Bali at normal usage (5-8 GB):

    Option Total cost (NZD)
    Travelren Bali eSIM (5 GB / 7 days) $13
    Travelren Bali eSIM (10 GB / 30 days) $22
    Spark Travel Pack (Indonesia) $56
    One NZ Daily Roaming $70
    2degrees Roaming Pass $63

    The eSIM is $43-57 NZD cheaper than the cheapest NZ telco option.

    How each NZ telco handles Bali

    Spark Travel Pack — $8 NZD/day for Indonesia on most plans. You get your domestic data allowance at local 4G speeds. Seven days = $56. Auto-triggers when your phone connects to an Indonesian network.

    One NZ Daily Roaming — $10 NZD/day for Indonesia. Uses your domestic allowance with fair-use throttling. Seven days = $70. Auto-triggers on first data use.

    2degrees Roaming Pass — $9 NZD/day for Bali. Similar structure: domestic allowance, auto-trigger. Seven days = $63.

    All three piggyback on Telkomsel or Indosat — the same Indonesian networks a local eSIM uses. Signal quality is identical. What differs is price and control.

    The bill-shock risk

    The three NZ telcos auto-trigger roaming charges the moment your phone uses data in Indonesia. That’s convenient when it works. It’s brutal when it doesn’t.

    If the pack fails to activate (network glitch, settings issue, plan mismatch) and your phone uses data anyway, you can be charged per-MB rates that run into dollars. A single afternoon of background app activity — email sync, iCloud photo backup, app updates — has produced four-figure bills. Rare, but it happens.

    An eSIM is prepaid. When the data runs out, it stops. No surprise bills at the end of the month.

    When the NZ telco option is worth it

    Three scenarios where paying Spark, One NZ, or 2degrees is reasonable:

    1. Short business trips with expense accounts. Your company pays and you keep your NZ number live for client calls.

    2. Frequent traveller plans — if you’re on Spark’s top-tier unlimited plan or One NZ’s premium tier, some years include bundled international roaming days. Always check your current plan’s benefits before you fly. They change quarterly.

    3. Heavy-SMS users — if your NZ bank (ASB, ANZ, Westpac, BNZ, Kiwibank) sends SMS codes for transactions, keeping your NZ number active matters. But dual SIM solves this without paying for roaming data.

    For most holiday travellers, the eSIM wins.

    Two-week and longer trips

    Over 14 days in Bali:

    • Spark Travel Pack — $112
    • One NZ Daily Roaming — $140
    • 2degrees Roaming Pass — $126
    • Travelren Bali eSIM (10 GB / 30 days) — $22

    Savings are $90-118 on a two-week trip. That’s a full-day Nusa Penida boat tour and a long lunch at La Lucciola.

    What Kiwis specifically should know

    Bali isn’t in any free-roaming zone for any NZ telco. Spark, One NZ, and 2degrees all include Australia in free or heavily-reduced tiers. None of them include Indonesia. If you’ve done the trans-Tasman hop cheaply on roaming, Bali is a different cost model — don’t assume.

    Check if your phone is eSIM-compatible. iPhone XS (2018) and newer — yes. Samsung Galaxy S20 and newer — yes. Pixel 3 and newer — yes. Most phones bought in NZ in the last four years qualify. Check yours at our device check tool.

    Keep your NZ SIM for bank 2FA. ASB, ANZ, Westpac, BNZ, and Kiwibank all SMS codes for certain transactions. Dual SIM (eSIM for data, NZ SIM with roaming off) keeps this working for free. Voice calls and SMS still reach your NZ number.

    If you’re on Skinny, Warehouse Mobile, or another MVNO. Skinny (Spark’s prepaid brand) and Warehouse Mobile don’t offer international roaming packs at all. You’d need to switch plans or use an eSIM. Most MVNO customers use eSIMs for exactly this reason — there’s no carrier alternative.

    Denpasar flight times matter. Most NZ Bali flights connect through Sydney or Melbourne. If you turn on roaming at the AU layover airport and your phone uses data, you may trigger a separate Australia day pass in addition to the Bali one. An eSIM installed before you fly avoids this entirely.

    What to do next

    1. Check your phone works with eSIM (60 seconds) 2. Browse Bali plans and pick 5-10 GB based on trip length 3. Install the eSIM on home Wi-Fi before you fly 4. Land in Denpasar, switch data to your Indonesia line, done

    If you want the full setup guide with network comparison, data usage breakdown, and install troubleshooting, read our Bali eSIM hub guide.

    Travelling to Bali from somewhere else? Australia · UK · US

    Frequently asked questions

    Does Spark's Travel Pack cover Bali?

    Yes, for $8 NZD/day on most plans. Auto-triggers when your phone connects to an Indonesian network. Seven days = $56. An eSIM covers the same week for $13.

    Will my New Zealand bank SMS codes still work with a Bali eSIM?

    Yes, if you keep your NZ SIM active on a second line with data roaming off. ASB, ANZ, Westpac, BNZ, and Kiwibank SMS codes all still reach your NZ number for free in this setup.

    Is there a reason to pay One NZ $10/day when a Bali eSIM is $2/day?

    Only if convenience is worth the $50-60 gap over a week. Your NZ number stays reachable either way if you use dual SIM — you're essentially paying for the mental overhead saving.

    Do Spark, One NZ, and 2degrees use different networks in Bali?

    No. All three piggyback on Telkomsel or Indosat — the same Indonesian carriers a local eSIM uses. Signal quality and coverage are identical. The only difference is price.

    What if I'm with Skinny or Warehouse Mobile?

    Skinny and Warehouse Mobile don't offer international roaming in Indonesia. An eSIM is essentially mandatory — and because there's no carrier alternative, the savings are even larger relative to your normal spend.

  • Japan eSIM vs Telstra, Optus, Vodafone roaming: 2026 cost check

    Japan eSIM vs Telstra, Optus, Vodafone roaming: 2026 cost check

    Last updated 15 April 2026 · 3 min read

    An Australian traveller saves $23-58 AUD on a week in Japan by using an eSIM over their home telco.

    Japan is the second most-searched Asian destination for Australian travellers, behind Bali. It’s also one of the most data-intensive trips you’ll take — Maps, Translate, and transit apps run constantly. Getting the data right matters.

    Here’s the maths.

    The bottom line

    For 7 days in Japan at normal usage (7-10 GB):

    Option Total cost (AUD)
    Travelren Japan eSIM (10 GB / 7 days) $14
    Travelren Japan eSIM (20 GB / 30 days) $27
    Telstra International Day Pass $70
    Optus Yes Day Pass $35
    Vodafone $5 Roaming $35

    The eSIM is $21-56 AUD cheaper than the cheapest AU telco option.

    How each Australian telco handles Japan

    Telstra International Day Pass — $10 AUD/day. Auto-triggers when your phone uses data overseas. Full domestic allowance at 4G/5G speeds. Seven days = $70.

    Optus Yes Day Pass — $5 AUD/day. Auto-triggers on first data use. Uses domestic allowance, capped monthly. Seven days = $35.

    Vodafone $5 Roaming — $5 AUD/day. Same auto-trigger model. Uses domestic allowance. Seven days = $35.

    All three piggyback on SoftBank, Docomo, or KDDI — the same Japanese networks a local eSIM uses. Signal quality is identical. What differs is price and control.

    The bill-shock risk

    Australian telcos auto-trigger day-pass charges the moment your phone uses data in Japan. Convenient when it works — brutal when it doesn’t.

    If the pack fails to activate (settings glitch, plan mismatch, carrier error) and your phone uses data anyway, you’re charged per-megabyte rates that run into dollars. One weekend of background app activity in Tokyo has produced four-figure bills. Rare, but it happens.

    An eSIM is prepaid. When data runs out, it stops.

    When the AU telco option is worth it

    Three scenarios where paying Telstra, Optus, or Vodafone makes sense:

    1. Business trips with expense accounts. You keep your Australian number live for client calls and the company foots the bill.

    2. Short weekend stopovers (Tokyo layover for 2-3 days). The day pass math is closer to break-even on a three-day trip than a two-week one.

    3. Heavy-SMS users — if your bank (Commonwealth, Westpac, ANZ, NAB) sends 2FA codes for transactions you’ll make abroad, keep your Australian number reachable. Dual SIM solves this without paying for roaming data.

    For holiday travellers, the eSIM wins.

    Two-week and longer trips

    Over 14 days in Japan:

    • Telstra International Day Pass — $140
    • Optus / Vodafone Day Pass — $70
    • Travelren Japan eSIM (20 GB / 30 days) — $27

    Savings are $43-113 on a two-week trip. That’s dinner at a Michelin-starred ramen shop and a Shinkansen return to Kyoto.

    What Australians specifically should know

    Japan is data-heavy, more than Bali. Google Translate camera mode for menus and signs, Google Maps for every train decision, and Japan Travel by Navitime for transit planning. Plan for 10 GB on a one-week trip, 20 GB on two weeks. Buying too small is the most common mistake.

    Your phone is almost certainly eSIM-compatible. Any iPhone from 2018 (XS) onwards, any Samsung Galaxy S20 or newer, any Pixel 3 or newer. Check in 60 seconds at our device check tool.

    Keep your Australian SIM for bank 2FA. Commonwealth, Westpac, ANZ, NAB — all SMS codes for some transactions. Dual SIM (eSIM data, AU SIM with roaming off) keeps this working free.

    Boost Mobile and Felix customers don’t get international roaming at all. eSIM is mandatory. On the bright side, there’s no carrier alternative to compare against, so savings are largest.

    Shinkansen reality check. If you’re working on the bullet train between Tokyo and Osaka, all three AU telcos deliver full 4G via SoftBank/Docomo. An eSIM on the same network is identical.

    What to do next

    1. Check your phone works with eSIM (60 seconds) 2. Browse Japan plans and pick 10-20 GB based on trip length 3. Install the eSIM on home Wi-Fi before you fly 4. Land in Narita or Haneda, switch data to your Japan line, done

    If you want the full setup guide with network comparison, data breakdown, and install troubleshooting, read our Japan eSIM hub guide.

    Travelling to Japan from somewhere else? UK · US · NZ

    Frequently asked questions

    Does Telstra's day pass work in Japan?

    Yes. Telstra has roaming agreements with SoftBank, Docomo, and KDDI. The day pass auto-activates on first data use.

    Will my Australian bank SMS codes still work with a Japan eSIM?

    Yes, if you keep your AU SIM active on a second line with data roaming off. SMS and calls still reach your Australian number for free.

    Is there a reason to pay Telstra $10/day when a Japan eSIM is $2/day?

    Only if the convenience is worth $56 over a week. Dual SIM keeps your Australian number reachable at no extra cost, so you're essentially paying for mental overhead.

    Do Optus and Vodafone work better than Telstra in Japan?

    All three use the same Japanese networks underneath. Signal and speed are identical. Only the price changes.

    What about Boost Mobile or Felix?

    Neither offers international roaming in Japan. An eSIM is essentially mandatory — and the savings are largest because there's no carrier alternative to compare.

  • Japan eSIM vs EE, Three, Vodafone UK roaming: 2026 cost check

    Japan eSIM vs EE, Three, Vodafone UK roaming: 2026 cost check

    Last updated 15 April 2026 · 3 min read

    A British traveller saves £40-70 on a week in Japan by using an eSIM over their home telco’s daily pack.

    Japan isn’t in any free-roaming zone for UK networks. It’s a paid-extra destination on every major telco, and the daily rates add up quickly on a typical 10 to 14 day Japan trip.

    Here’s the maths.

    The bottom line

    For 7 days in Japan at normal usage (7-10 GB):

    Option Total cost (GBP)
    Travelren Japan eSIM (10 GB / 7 days) £10
    Travelren Japan eSIM (20 GB / 30 days) £16
    EE Roam Abroad Pass £42-56
    Three daily roaming Japan £35-49
    Vodafone Global Roaming Plus £49

    The eSIM is £25-46 cheaper than the cheapest UK telco option.

    How each UK telco handles Japan

    EE — Japan is outside the free Roam Like at Home zone and most Roam Abroad inclusions. Daily surcharge is £6-8 on most plans. Seven days = £42-56. Always check your specific plan’s current inclusions — they shifted again in late 2025.

    Three — Three’s Go Roam historically included Japan but removed it after Brexit-era regulatory changes. Japan is now standard daily roaming — £5-7/day. Seven days = £35-49.

    Vodafone UK — Global Roaming Plus is £7/day for destinations outside Europe. Japan sits here. Seven days = £49.

    All three UK telcos piggyback on SoftBank, Docomo, or KDDI in Japan — the same networks a local eSIM uses. Signal quality is identical. Only the price changes.

    The bill-shock risk

    UK telcos apply automatic roaming charges the moment your phone uses data in Japan — unless you’ve disabled international data or added a specific travel plan in advance.

    If you arrive at Narita with data roaming on but no active travel plan, per-megabyte rates of £5-10/MB apply on some networks. Background app activity for a day or two — iCloud, email, app updates — can produce bills in the low three figures.

    An eSIM is prepaid. It doesn’t have this failure mode.

    When the UK telco option is worth it

    Three scenarios where paying your UK network is reasonable:

    1. Short business trips where your employer pays. £56 for a week of full UK-number convenience isn’t catastrophic.

    2. Plan tier inclusions change quarterly. If you’re on EE’s Full Works or a premium tier that includes Japan in Roam Abroad this quarter, the day pass might be free. Check your plan before you fly — don’t assume.

    3. Frequent bank 2FA SMS users. If Monzo, Starling, Revolut, or a traditional UK bank SMS you frequently, keeping your UK number live matters. Dual SIM solves this for free — you don’t need to pay for UK roaming data.

    For holiday travellers, the eSIM wins every time.

    Two-week and longer trips

    Over 14 days in Japan:

    • EE Roam Abroad — £84-112
    • Three daily roaming — £70-98
    • Vodafone Global Roaming Plus — £98
    • Travelren Japan eSIM (20 GB / 30 days) — £16

    Savings are £54-96 on a two-week trip. That’s a proper kaiseki dinner in Kyoto and a day pass for the Hakone Free Pass.

    What Brits specifically should know

    Japan is a paid destination on every UK telco. Since Brexit, UK networks have tightened international inclusions. Don’t assume a friend’s EE plan “covers Japan” — quarterly inclusion changes mean your plan may differ.

    Your phone is probably eSIM-ready. iPhone XS (2018) and newer, Samsung Galaxy S20 and newer, Pixel 3 and newer. Check yours at our device check tool.

    Keep your UK SIM for bank 2FA. High-street banks and challenger banks alike SMS codes for transactions abroad. Dual SIM (eSIM for data, UK SIM with roaming off) keeps this working free.

    Giffgaff and Smarty customers generally don’t get Japan roaming, or pay standard per-MB rates that make an eSIM mandatory. Savings are largest because there’s no carrier alternative to weigh.

    Shinkansen and JR Pass don’t come with bundled Wi-Fi on every train. If you’re working between Tokyo and Kyoto, you need mobile data. An eSIM on SoftBank or Docomo covers the whole route cleanly.

    What to do next

    1. Check your phone works with eSIM (60 seconds) 2. Browse Japan plans and pick 10-20 GB based on trip length 3. Install the eSIM on home Wi-Fi before you fly 4. Land at Narita or Haneda, switch data to your Japan line, done

    If you want the full setup guide including network comparison, data breakdown, and install troubleshooting, read our Japan eSIM hub guide.

    Travelling to Japan from somewhere else? Australia · US · NZ

    Frequently asked questions

    Does EE's Roam Abroad cover Japan in 2026?

    On most plans, no — Japan is a paid add-on at £6-8/day. Top-tier plans may include it. Always check your specific plan before you fly.

    Can I use Three's Go Roam in Japan?

    No, not for free. Three removed Japan from Go Roam after Brexit-era regulatory changes. You'll pay standard daily roaming.

    Is it cheaper to buy a physical SIM at Narita or Haneda?

    Similar price to an eSIM (£20-36 for a week) but with more friction — queue at the counter, swap SIMs, deal with support in a language you may not speak. An eSIM installs at home before you fly.

    Will my UK bank SMS codes still work with a Japan eSIM?

    Yes, if you keep your UK SIM active on a second line with data roaming off. SMS and calls reach your UK number free.

    What about Giffgaff or Smarty?

    Neither offers Japan roaming at competitive rates. An eSIM is essentially mandatory — and savings are largest because there's no alternative to compare.

  • Japan eSIM vs T-Mobile, Verizon, AT&T roaming: 2026 cost check

    Japan eSIM vs T-Mobile, Verizon, AT&T roaming: 2026 cost check

    Last updated 15 April 2026 · 3 min read

    An American traveler saves $30-150 on a week in Japan by using an eSIM instead of a carrier day pass. T-Mobile users save less — here’s why.

    Japan is the highest-visited Asian destination for Americans. It’s also one of the most data-heavy — Translate, Maps, transit apps run all day. Getting data right matters more in Japan than almost anywhere else.

    The bottom line

    For 7 days in Japan at normal usage (7-10 GB):

    Option Total cost (USD)
    Travelren Japan eSIM (10 GB / 7 days) $12
    Travelren Japan eSIM (20 GB / 30 days) $18
    T-Mobile Magenta (2G unlimited, free) $0 (2G = limited use)
    T-Mobile high-speed day pass $5/day = $35
    Verizon International Travel Pass $10/day = $70
    AT&T International Day Pass $12/day = $84

    The eSIM is $23-72 cheaper than the paid US carrier options. T-Mobile’s free tier is unique — more on that below.

    How each US carrier handles Japan

    T-Mobile — Magenta and Go5G plans include unlimited data in Japan at 2G speeds (~256 Kbps). Free, but 2G is functional only for iMessage and basic email. For Google Translate camera mode and Google Maps with live traffic, you need the $5/day high-speed upgrade. Seven days = $35.

    Verizon International Travel Pass — $10/day. 2 GB high-speed, then unlimited 3G. Seven days = $70. Auto-triggers on first data use.

    AT&T International Day Pass — $12/day. Unlimited at domestic speeds with fair-use throttling after about 2 GB/day. Seven days = $84. Auto-triggers on first data use.

    All three carriers route through SoftBank, Docomo, or KDDI in Japan. Signal is identical. What differs is price, speed, and how surprise-triggers work.

    T-Mobile is Japan’s closest free-roaming exception

    T-Mobile’s free 2G is the closest any US carrier comes to making an eSIM unnecessary for Japan. For travelers who only need iMessage and email, 2G works.

    But Japan is a Translate and Maps country. Google Translate camera mode on a menu, real-time train transfers on Google Maps, Uber, LINE video calls with your tour group — none of these work on 2G. If you plan to use any of them (you will), you need the $5/day upgrade or an eSIM. At that point the eSIM wins by $20+.

    The bill-shock risk

    Verizon and AT&T auto-trigger Day Pass charges the moment your phone uses any data in Japan. If the pass fails to activate (a real edge case) you can be charged per-MB rates that hit dollars per megabyte. Background app activity for a day has produced four-figure bills.

    An eSIM is prepaid. Data runs out, it stops.

    When the US carrier option is worth it

    Three scenarios:

    1. Business trips with expense accounts. Your company pays, you keep your US number live for work calls and 2FA.

    2. T-Mobile users on messaging-only trips. If Japan means iMessage and email, the free 2G works. Add the $5/day upgrade only for days when you need Maps.

    3. Premium plan holders — T-Mobile Go5G Next and some Verizon Unlimited Plus tiers include bundled or reduced international data. Plan specifics change annually. Check yours.

    For most vacation travelers, the eSIM wins.

    Two-week and longer trips

    Over 14 days in Japan:

    • T-Mobile high-speed day pass — $70
    • Verizon International Travel Pass — $140
    • AT&T International Day Pass — $168
    • Travelren Japan eSIM (20 GB / 30 days) — $18

    Savings are $52-150 on a two-week trip. That’s a night in a mid-tier ryokan with a multi-course dinner.

    What Americans specifically should know

    Japan is eSIM-friendly but Verizon and AT&T treat it as a Day Pass destination. You can’t stack it with most existing travel add-ons. Check your plan’s specific Japan terms.

    Check if your phone is eSIM-compatible. iPhone XS (2018) and newer, Samsung Galaxy S20 and newer, Pixel 3 and newer. iPhones sold in the US since 2023 are eSIM-only — no physical SIM slot — which actually makes dual-eSIM easier. Check yours at our device check tool.

    Your US number stays live with dual SIM. Keep the US carrier active on a second line (or second eSIM on iPhone 14+) with data roaming off. Calls, SMS, and bank 2FA all still reach your US number free.

    MVNO reality check. Mint, Cricket, Visible, Metro — international roaming in Japan is either blocked or charged at prohibitive per-MB rates. eSIM is essentially mandatory. MVNO customers save the most because there’s no meaningful carrier alternative.

    Japan is where 2G genuinely falls short. Unlike some destinations where T-Mobile’s free tier covers most traveler needs, Japan’s reliance on real-time translation and transit apps makes 2G frustrating fast.

    What to do next

    1. Check your phone works with eSIM (60 seconds) 2. Browse Japan plans and pick 10-20 GB based on trip length 3. Install the eSIM on home Wi-Fi before you fly 4. Land at Narita or Haneda, switch data to your Japan line, done

    If you want the full setup guide with network comparison and install troubleshooting, read our Japan eSIM hub guide.

    Traveling to Japan from somewhere else? Australia · UK · NZ

    Frequently asked questions

    Does T-Mobile work in Japan?

    Yes, at 2G speeds free on most Magenta/Go5G plans. Upgrade to $5/day for 4G/5G. For Translate camera mode and Google Maps, you need the upgrade or an eSIM.

    Is Verizon's Travel Pass worth $70 for a week in Japan?

    Only if convenience is worth $58 to you. An eSIM gives identical speed on identical networks for $12.

    Can I use an eSIM on an iPhone 14 or 15 with no physical SIM slot?

    Yes — easier, actually. Your US line is already an eSIM, and you can add a second eSIM for Japan. Dual-eSIM is standard on iPhone 14+.

    Will my US bank 2FA codes still work with a Japan eSIM?

    Yes, if you keep your US carrier active on a second line with data roaming off. SMS and calls reach your US number free.

    What if I'm with Mint, Cricket, or Visible?

    Most US MVNOs don't offer Japan roaming, or charge prohibitive per-MB rates. eSIM is your only practical option — savings are largest because there's no alternative.

  • Japan eSIM vs Spark, One NZ, 2degrees roaming: 2026 cost check

    Japan eSIM vs Spark, One NZ, 2degrees roaming: 2026 cost check

    Last updated 15 April 2026 · 3 min read

    A Kiwi traveller saves $50-100 NZD on a week in Japan by using an eSIM over their home telco.

    Japan is the top-searched long-haul destination for New Zealanders after the US. It’s a 10-11 hour flight, the trip usually runs 10-14 days, and data usage is heavy because you rely on Google Translate and Maps constantly.

    Here’s the maths.

    The bottom line

    For 7 days in Japan at normal usage (7-10 GB):

    Option Total cost (NZD)
    Travelren Japan eSIM (10 GB / 7 days) $19
    Travelren Japan eSIM (20 GB / 30 days) $30
    Spark Travel Pack (Japan) $56
    One NZ Daily Roaming $70
    2degrees Roaming Pass $63

    The eSIM is $37-51 NZD cheaper than the cheapest NZ telco option.

    How each NZ telco handles Japan

    Spark Travel Pack — $8 NZD/day for Japan on most plans. Domestic allowance at local 4G speeds. Seven days = $56. Auto-triggers on connection to a Japanese tower.

    One NZ Daily Roaming — $10 NZD/day. Domestic allowance with fair-use throttling. Seven days = $70. Auto-triggers on first data use.

    2degrees Roaming Pass — $9 NZD/day for Japan. Same structure. Seven days = $63.

    All three piggyback on SoftBank, Docomo, or KDDI in Japan — the same networks a local eSIM uses. Signal and speed are identical. Only the price changes.

    The bill-shock risk

    All three NZ telcos auto-trigger roaming charges on first data use in Japan. If the pack fails to activate (rare but real) and your phone uses data anyway, you’re charged per-MB rates that hit dollars per megabyte. A day of background app activity has produced four-figure bills.

    An eSIM is prepaid. Data runs out, it stops.

    When the NZ telco option is worth it

    Three scenarios where paying Spark, One NZ, or 2degrees is reasonable:

    1. Short business trips with expense accounts. Your company pays, you keep your NZ number live.

    2. Frequent-traveller tiers — Spark’s top unlimited plan and One NZ’s premium tier sometimes bundle international roaming days. Inclusions change annually. Check before you fly.

    3. Heavy-SMS users — ASB, ANZ, Westpac, BNZ, and Kiwibank SMS codes for some transactions. Keep your NZ number reachable with dual SIM (no paid roaming needed).

    For holiday travellers, the eSIM wins.

    Two-week and longer trips

    Over 14 days in Japan:

    • Spark Travel Pack — $112
    • One NZ Daily Roaming — $140
    • 2degrees Roaming Pass — $126
    • Travelren Japan eSIM (20 GB / 30 days) — $30

    Savings are $82-110 on a two-week trip. That’s a Shinkansen return to Kyoto and a teppanyaki dinner in Kobe.

    What Kiwis specifically should know

    Japan isn’t in any free-roaming zone for any NZ telco. Australia is — Japan isn’t. If you’ve done trans-Tasman roaming cheaply, Japan is a different cost model. Don’t assume.

    Check if your phone is eSIM-compatible. iPhone XS (2018) and newer, Samsung Galaxy S20 and newer, Pixel 3 and newer. Most NZ phones from the last four years qualify. Check in 60 seconds at our device check tool.

    Keep your NZ SIM for bank 2FA. ASB, ANZ, Westpac, BNZ, Kiwibank — all SMS codes for transactions. Dual SIM (eSIM for data, NZ SIM with roaming off) keeps this free.

    Skinny and Warehouse Mobile don’t roam in Japan. eSIM is essentially mandatory for MVNO customers. Savings are largest because there’s no carrier alternative.

    Auckland-Tokyo flight transits — most NZ-Japan routes connect through Sydney, Brisbane, or Auckland direct. If you turn on roaming during an Australian layover, you may trigger a separate Australia day pass on top of the Japan one. An eSIM installed before you fly avoids this.

    Japan is data-heavy. Plan for 10 GB on a one-week trip, 20 GB on two weeks. Google Translate camera mode for menus and signs, Google Maps for every train transfer. Don’t buy the smallest plan.

    What to do next

    1. Check your phone works with eSIM (60 seconds) 2. Browse Japan plans and pick 10-20 GB based on trip length 3. Install the eSIM on home Wi-Fi before you fly 4. Land at Narita or Haneda, switch data to your Japan line, done

    If you want the full setup guide with network comparison and install troubleshooting, read our Japan eSIM hub guide.

    Travelling to Japan from somewhere else? Australia · UK · US

    Frequently asked questions

    Does Spark's Travel Pack cover Japan?

    Yes, at $8 NZD/day on most plans. Auto-triggers on a Japanese network. Seven days = $56. An eSIM covers the same week for $19.

    Will my New Zealand bank SMS codes still work with a Japan eSIM?

    Yes, if you keep your NZ SIM active on a second line with data roaming off. ASB, ANZ, Westpac, BNZ, and Kiwibank SMS still reach your NZ number free.

    Is there a reason to pay One NZ $10/day when a Japan eSIM is $3/day?

    Only if the $50-60 convenience premium is worth it. Dual SIM keeps your NZ number reachable for free regardless.

    Do Spark, One NZ, and 2degrees use different networks in Japan?

    No. All three piggyback on SoftBank, Docomo, or KDDI. Signal is identical. Only the price changes.

    What if I'm with Skinny or Warehouse Mobile?

    Neither offers Japan roaming at usable rates. eSIM is mandatory — and savings are largest because there's no alternative.

  • China eSIM vs Telstra, Optus, Vodafone roaming: 2026 cost check

    China eSIM vs Telstra, Optus, Vodafone roaming: 2026 cost check

    Last updated 15 April 2026 · 3 min read

    An Australian traveller saves $25-55 AUD on a week in China — and more importantly, gets Google Maps and WhatsApp to actually work.

    China is the one destination where the eSIM vs telco comparison isn’t just about price. It’s about whether your phone actually works. Australian telco roaming in China routes through Chinese domestic networks, which means the Great Firewall applies. Google, WhatsApp, and Instagram are blocked.

    A foreign-routed eSIM bypasses the firewall. Your phone works like it does at home.

    The bottom line

    For 7 days in China at normal usage (5-8 GB):

    Option Total cost (AUD) Google/WhatsApp work?
    Travelren China eSIM (foreign-routed) $22 Yes
    Travelren China eSIM (10 GB / 30 days) $38 Yes
    Telstra International Day Pass $70 No (firewalled)
    Optus Yes Day Pass $35 No (firewalled)
    Vodafone $5 Roaming $35 No (firewalled)

    The eSIM is $13-48 AUD cheaper and it actually works in China. That second part matters more than the price.

    How each Australian telco handles China

    Telstra, Optus, Vodafone — all three offer day-pass roaming in China. All three route your data through Chinese domestic carriers (China Mobile or China Unicom). This means the Great Firewall applies to your traffic: Google, Gmail, WhatsApp, Instagram, Facebook, YouTube, Western news — all blocked unless you use a VPN on top.

    Telstra day pass: $10/day = $70 for a week. Optus day pass: $5/day = $35 for a week. Vodafone $5 Roaming: $5/day = $35 for a week.

    A foreign-routed eSIM costs less and keeps Google working.

    Why the firewall matters for travellers

    This is the part most telco comparison articles miss. Paying $70 to Telstra for a week of “roaming in China” gets you a phone that can’t open Google Maps, can’t message home on WhatsApp, and can’t check Gmail. You’d then need to install and rely on a VPN — which is technically grey in China and often unreliable (the firewall actively targets VPN traffic).

    An eSIM marketed as foreign-routed or international-routing routes your data through Hong Kong or overseas. The firewall doesn’t filter traffic that leaves the country before being processed. Google Maps works. WhatsApp works. Gmail works. No VPN needed.

    The bill-shock risk

    Australian telco day passes auto-trigger on first data use in China. If the pack fails to activate (real edge case), you’re charged per-MB at dollars per megabyte. A day of background app activity in Beijing has produced four-figure bills.

    An eSIM is prepaid. Data runs out, it stops.

    When the AU telco option is worth it

    Two honest scenarios:

    1. Short business trips where your company pays and you’re going to install a corporate VPN anyway. Your work apps and email route through the VPN, Google/WhatsApp come along for the ride. You keep your Australian number live for client calls.

    2. You genuinely only need WeChat. Inside China, WeChat handles everything — messaging, calls, payments, Didi rides, restaurant bookings. If you’re happy going full WeChat and skipping Google/WhatsApp, the telco option works.

    For everyone else, the foreign-routed eSIM is the answer.

    Two-week and longer trips

    Over 14 days in China:

    • Telstra — $140 (firewalled)
    • Optus / Vodafone — $70 (firewalled)
    • Travelren China eSIM (10 GB / 30 days, foreign-routed) — $38

    Savings are $32-102 on a two-week trip, plus Google actually works. That’s the difference between a Beijing trip where you use Google Maps for the hutong alleys and one where you get lost.

    What Australians specifically should know

    The firewall is the reason to get a foreign-routed eSIM, not the price. This is the destination where “I’ll just turn on Telstra roaming” genuinely doesn’t work the way you expect.

    Your phone is almost certainly eSIM-compatible. iPhone XS (2018) and newer, Samsung Galaxy S20 and newer, Pixel 3 and newer. Check in 60 seconds at our device check tool.

    Keep your Australian SIM for bank 2FA. Commonwealth, Westpac, ANZ, and NAB SMS codes need your Australian number live. Dual SIM (eSIM for data, AU SIM with roaming off) keeps this working free.

    Alipay and WeChat Pay work with your eSIM. Both accept international cards now (2024-onwards). You don’t need a Chinese bank account for most transactions.

    Install before you fly — critical for China. Many eSIM providers’ own websites are blocked inside China. If your eSIM fails to activate and you try to reach support from Beijing hotel Wi-Fi, you may not be able to. Install and save support contacts offline at home.

    What to do next

    1. Check your phone works with eSIM (60 seconds) 2. Browse China plans — look for “foreign-routed” or “Hong Kong routing” 3. Install the eSIM on home Wi-Fi before you fly. Save support info offline. 4. Land, switch data to your China line, test with Google Maps

    If you want the full setup guide including firewall mechanics and install troubleshooting, read our China eSIM hub guide.

    Travelling to China from somewhere else? UK · US · NZ

    Frequently asked questions

    Does Telstra roaming work in China?

    Yes, technically. You'll get data. But your data is filtered by the Great Firewall — Google, WhatsApp, Instagram, and most Western apps are blocked. You'd need a VPN on top, which is unreliable in China.

    Will Google Maps work with a China eSIM?

    Yes, with a foreign-routed China eSIM (including Travelren's). Domestic China SIMs — the kind sold at Beijing airport kiosks — do not bypass the firewall.

    Will my Australian bank SMS codes still work?

    Yes, if you keep your Australian SIM active on a second line with data roaming off. SMS and calls reach your Australian number free.

    Is it legal to use a foreign-routed eSIM in China?

    Yes. International roaming has always worked this way. You're not circumventing the law — you're using the standard inbound tourist data path.

    What about Tibet or Xinjiang?

    These regions have additional network restrictions that can affect any routing. Confirm with your eSIM provider before travelling there.

  • China eSIM vs EE, Three, Vodafone UK roaming: 2026 cost check

    China eSIM vs EE, Three, Vodafone UK roaming: 2026 cost check

    Last updated 15 April 2026 · 3 min read

    A British traveller saves £30-60 on a week in China — and gets Google Maps and WhatsApp to actually work.

    China is the destination where “just turn on roaming” genuinely doesn’t work the way you’d expect. UK telco roaming routes your traffic through Chinese domestic networks, which means the Great Firewall applies. Google, WhatsApp, Instagram, Gmail — all blocked.

    A foreign-routed eSIM bypasses the firewall. Your phone works normally.

    The bottom line

    For 7 days in China at normal usage (5-8 GB):

    Option Total cost (GBP) Google/WhatsApp work?
    Travelren China eSIM (foreign-routed) £16 Yes
    Travelren China eSIM (10 GB / 30 days) £28 Yes
    EE Roam Abroad Pass £42-56 No (firewalled)
    Three daily roaming China £35-49 No (firewalled)
    Vodafone Global Roaming Plus £49 No (firewalled)

    The eSIM is £19-40 cheaper and it works. The “works” part matters more than the money.

    How each UK telco handles China

    EE — day-pass roaming £6-8/day. Seven days = £42-56. Routes through China Mobile or China Unicom — firewall applies.

    Three — since removing China from Go Roam during 2021 regulatory changes, daily rates of £5-7/day apply. Seven days = £35-49. Firewall applies.

    Vodafone UK — Global Roaming Plus, £7/day. Seven days = £49. Firewall applies.

    All three UK telcos offer technically-working data roaming in China. None of them bypass the firewall. Paying £49 for a week of Vodafone roaming gives you a phone where Google doesn’t load.

    Why the firewall matters

    This is the crux of any China travel guide. The Great Firewall filters traffic on Chinese domestic networks. Google, Gmail, WhatsApp, Instagram, Facebook, Twitter/X, YouTube, BBC News, The Guardian — all blocked unless you run a VPN.

    VPNs in China are legally grey, often unreliable (the firewall actively targets VPN traffic), and a hassle to set up. Paying £49 to your UK telco and then fighting with a VPN is the worst of all worlds.

    A foreign-routed eSIM routes your data through Hong Kong or overseas before the firewall filters it. Google, WhatsApp, all of it — works immediately, no VPN.

    The bill-shock risk

    UK telcos apply automatic roaming charges on first data use in China. If the plan fails to activate, per-MB rates can hit £5-10/MB. Background app activity for a day produces bills in the low three figures.

    An eSIM is prepaid. No surprise bills.

    When the UK telco option is worth it

    Two scenarios:

    1. Business trips with expense accounts where you’ll install a corporate VPN anyway. The VPN tunnels Google and WhatsApp over the work network.

    2. WeChat-only trips. If you’re in China purely for a trade show or conference where WeChat does everything (messaging, payments, calls, business cards), you can survive on Chinese domestic data. Most holidaymakers can’t.

    For everyone else, the foreign-routed eSIM is the answer.

    Two-week and longer trips

    Over 14 days in China:

    • EE — £84-112 (firewalled)
    • Three — £70-98 (firewalled)
    • Vodafone UK — £98 (firewalled)
    • Travelren China eSIM (10 GB / 30 days, foreign-routed) — £28

    Savings are £42-84 on a two-week trip. More importantly, Google works the whole time.

    What Brits specifically should know

    The firewall is the real issue. Forget the price comparison for a minute — the question is whether your phone works as you’d expect. On UK telco roaming, it largely doesn’t. On a foreign-routed eSIM, it does.

    Your phone is probably eSIM-ready. iPhone XS (2018) and newer, Samsung Galaxy S20 and newer, Pixel 3 and newer. Check yours at our device check tool.

    Keep your UK SIM for bank 2FA. Monzo, Starling, Revolut, and high-street UK banks SMS codes for transactions abroad. Dual SIM (eSIM for data, UK SIM with roaming off) keeps this working free.

    Giffgaff and Smarty customers don’t get usable China roaming. eSIM is mandatory — and savings are largest because there’s no carrier alternative to compare.

    Install before you fly — critical. Many eSIM providers’ own websites are blocked in China. If your eSIM fails and you try to reach support from Beijing hotel Wi-Fi, you may not be able to. Install and save support contacts offline at home.

    China accepts foreign cards now. Alipay and WeChat Pay both accept Visa and Mastercard for most transactions (post-2024). You don’t need a Chinese bank account for 95% of tourist spending.

    What to do next

    1. Check your phone works with eSIM (60 seconds) 2. Browse China plans — look for “foreign-routed” or “Hong Kong routing” 3. Install the eSIM on home Wi-Fi before you fly. Save support info offline. 4. Land, switch data to your China line, test with Google Maps

    If you want the full setup guide including firewall mechanics and install troubleshooting, read our China eSIM hub guide.

    Travelling to China from somewhere else? Australia · US · NZ

    Frequently asked questions

    Does EE's Roam Abroad cover China?

    China is a paid add-on on most EE plans — £6-8/day. But even when it works, your traffic is firewalled. Google and WhatsApp won't load without a VPN.

    Will Google Maps work with a China eSIM?

    Yes, with a foreign-routed China eSIM. Domestic China SIMs sold at airport kiosks do not bypass the firewall.

    Will my UK bank SMS codes still work?

    Yes, if you keep your UK SIM active on a second line with data roaming off. SMS and calls reach your UK number free.

    Is a foreign-routed eSIM legal in China?

    Yes. International roaming has always routed through foreign carrier agreements. You're not circumventing anything.

    What about the BBC News website in China?

    BBC News is blocked on domestic Chinese networks. On a foreign-routed eSIM, it loads normally.