Category: eSIM reviews

Yes, Verizon works in Japan. Your phone connects automatically to Verizon’s TravelPass at USD$12 per day for talk, text, and data on the SoftBank or KDDI au network. For a one-week Tokyo + Kyoto trip that’s USD$84 just for connectivity. An eSIM for the same trip starts at USD$5.55. Below is an honest breakdown of when each option is the right pick.

This is written by Travelren, an eSIM brand. We sell Japan plans, so we have a stake. We’re going to give you the real numbers and tell you the scenarios where TravelPass is genuinely the better call — there are real cases.

The quick answer

• Verizon TravelPass in Japan: USD$12 per day, only on days you use the network. SoftBank or KDDI au is the carrier you’ll connect to.
• Travelren eSIM, 3GB / 30 days for Japan: approximately USD$5.55 (around AUD$8 / £4.16)
• Crossover point: for any trip 1 day or longer the eSIM is cheaper. For a 1-week trip the eSIM saves USD$78.

How Verizon actually works when you land in Japan

Japan has three main mobile carriers: NTT Docomo, SoftBank, and KDDI au. Verizon’s roaming partners route you to SoftBank as the primary network, with KDDI au as a fallback in some regions. NTT Docomo has the strongest rural coverage of the three, but no major US carrier (or major eSIM brand) routes Docomo-primary for tourists. For city trips — Tokyo, Osaka, Kyoto, Hiroshima, Fukuoka — the difference is invisible. You’ll pull 100+ Mbps on 5G in Shibuya and Dotonbori either way.

TravelPass auto-activates on first use. You’ll get a Verizon SMS confirming the day-pass charge. Days you don’t use the network aren’t billed — but your phone background-syncing email or a single iMessage notification counts as activation. Disable cellular data on landing if you want some quiet days, then re-enable when you actually need it.

TravelPass pricing detail for Japan

• USD$12 per day, charged per 24-hour window from first use (not calendar days)
• Talk + text + your home plan’s data allowance is included on activation days
• If you have an Unlimited Plus / Unlimited Welcome plan, your usage isn’t metered separately — it draws from your home plan
• Some plans cap TravelPass charges at a maximum per cycle — check the My Verizon app’s roaming addendum

What an eSIM costs for the same Japan trip

Travelren sells these common Japan plans (USD as of May 2026):

• 1GB / 7 days: approximately USD$2.77 — fine for a weekend in Tokyo with WiFi at the hotel
• 3GB / 30 days: approximately USD$5.55 — sweet spot for a 1-2 week trip, navigation + messaging + occasional video calls
• 5GB / 30 days: approximately USD$7.63 — comfortable for two weeks with daily Reels / Instagram / FaceTime home
• 10GB / 30 days: approximately USD$12.48 — for digital-nomad weeks where you’re tethering laptops
• 20GB / 30 days: approximately USD$17.34 — if you genuinely don’t want to think about it

The eSIM routes on SoftBank and KDDI au — the same networks Verizon TravelPass connects to. Your in-country experience is identical. Browse the full Japan eSIM range.

The honest break-even math

Trip length	Verizon TravelPass	Travelren 3GB / 30 days	Cheaper option
1 day stopover	USD$12	USD$5.55	eSIM saves USD$6.45
3 days (Tokyo weekend)	USD$36	USD$5.55	eSIM saves USD$30.45
1 week	USD$84	USD$5.55	eSIM saves USD$78.45
2 weeks (typical Japan trip)	USD$168	USD$7.63 (5GB)	eSIM saves USD$160.37
3 weeks	USD$252	USD$12.48 (10GB)	eSIM saves USD$239.52

The eSIM is cheaper at every trip length, including a one-day stopover. There’s no Japan trip where TravelPass beats an eSIM on price.

When Verizon TravelPass is actually the right call

• You’re transiting through Tokyo for under 6 hours with a long Singapore or LAX layover before or after. Adding an eSIM you’ll use for half a layover isn’t worth the setup time
• You can’t have your US number go silent on data days for SMS reasons — bank 2FA, doctor calls, recruiter texts. Most modern phones handle this with dual-SIM (eSIM + physical), but if your phone can’t dual-SIM, TravelPass keeps your line live
• You’re on a corporate Verizon plan that comps TravelPass — some enterprise plans include international roaming. Verify with IT before assuming
• You don’t want to fiddle with QR codes on a 14-hour flight before landing tired. TravelPass auto-activates with zero config

Will your phone work?

Almost certainly yes. iPhone XS or newer (2018+), Pixel 3 or newer, Galaxy S20 or newer all support eSIM. As of iPhone 14 (2022), all US-sold iPhones are eSIM-only — no physical SIM tray exists. For Verizon-locked phones: Verizon unlocks phones automatically 60 days after purchase if the device is paid-off, so older devices on contract should be fine.

The exception: iPhones bought directly from Apple in mainland China don’t have eSIM hardware even when the model number is otherwise identical to a US-purchased phone. If your iPhone was bought in China, you’ll need to use TravelPass or a physical SIM in country.

Our device check page has a full lookup.

Common questions

Can’t I just use airport WiFi to get a Suica card and Google Maps before leaving Narita / Haneda?

You can — and that approach gets a lot of first-time visitors through the day they land. But you’ll need data the moment you step outside the terminal: trains shut quickly after midnight, last-train alerts, restaurant reservations, Suica top-ups via the Apple Wallet pass. The cost of being disconnected for the 90 minutes between airport WiFi and your hotel WiFi is usually higher than USD$5.55.

What about pocket-wifi rental at the airport?

Pocket WiFi made sense pre-2020 when eSIM was still rare on US phones. Today it’s USD$60-100 for a week, requires you to keep a separate device charged, and has roughly the same coverage as your phone would have on an eSIM. The eSIM at USD$5.55 is the same product without the extra device.

Will iMessage and WhatsApp keep working on my US number?

Yes. Both are tied to your Apple ID / phone number registration, not the network. As long as you have data (from any source — Verizon TravelPass OR an eSIM), iMessage and WhatsApp keep working. Your contacts see your usual US number.

Can I make calls in Japan with the eSIM?

The Travelren Japan eSIM is data-only. For calls home: FaceTime, WhatsApp, Signal, or Google Meet over data. For calls to local Japanese numbers (your hotel, restaurant reservations) — most reservations in Japan happen over web (Tabelog, OpenTable Japan) or LINE, not phone. If you genuinely need to dial a 03 or 06 number, your hotel concierge can call for you.

My trip is 15 days but the 30-day plan ends on day 30. What happens after I leave Japan?

Nothing. The eSIM expires when you reach 30 days from activation OR when you delete it from your phone, whichever comes first. There’s no auto-renewal and no way for it to charge you when you’re back in the US. You can also delete it the moment you board the return flight.

The bottom line

For any Japan trip longer than a brief layover, an eSIM saves significant money over Verizon TravelPass. A typical 2-week Japan vacation: USD$7.63 with Travelren, USD$168 with TravelPass. That’s USD$160 you can spend on a memorable kaiseki dinner instead.

The eSIM does require 5 minutes of setup (QR code scan + plan activation) and means your Verizon number drops to SMS-only on data days. If those constraints don’t bother you, the math is clear.

See the full Travelren Japan eSIM range →

Sources

• Verizon TravelPass FAQ + supported countries
• SoftBank Japan — primary roaming partner
• Opensignal Japan Mobile Network Experience reports
• Travelren Japan eSIM plans
• Travelren vs Airalo vs Holafly — pillar comparison for US travelers

Yes, your Verizon phone will work in Bali. Verizon TravelPass connects automatically when you land, gives you the same talk-text-data plan you have at home, and charges USD$12 per day for every day you actually use it. For a one-week trip that’s around USD$84 just for the connection. An eSIM for the same week starts at USD$6.24. Here’s exactly when each one is the right pick.

This guide is written by Travelren, a travel eSIM brand. We have a stake in this answer — we sell eSIMs, including for Indonesia. We’ve put the honest numbers below so you can decide for yourself. There’s a real scenario where keeping Verizon TravelPass on is the better call, and we’ll flag it.

The quick answer

• Verizon TravelPass in Bali: USD$12 per day, billed only on days you use data/calls/SMS. Max charge per bill cycle is capped after 10 days for some plans — verify yours on the My Verizon app before you fly.
• Travelren eSIM, 5GB / 30 days for Indonesia: approximately USD$9.71 (around AUD$14 / £7.27)
• The crossover: for any trip 2 days or longer, an eSIM is cheaper. For a 1-day stopover with heavy data needs, TravelPass is sometimes worth it.

How Verizon actually works when you land in Bali

Indonesia’s two main cellular carriers are Indosat Ooredoo Hutchison and Smartfren. Verizon’s roaming agreements route you onto Indosat in most of Java and Bali, with handoff to Telkomsel in some regions. Coverage is excellent across Denpasar, Ubud, Canggu, Seminyak, Sanur, and Uluwatu — the parts of Bali you’re most likely to visit. 4G LTE is the standard; 5G is available on Indosat in major urban areas but Bali itself is mostly 4G. You’ll typically pull 20-60 Mbps in tourist zones, which is plenty for Google Maps, Gojek, Grab, WhatsApp, and HD streaming.

TravelPass triggers automatically the first time your phone uses data, makes a call, or sends a text in Indonesia. You’ll get a text from Verizon confirming the day-pass charge. Days when you don’t use the network aren’t charged — but if you forget your phone is on and it auto-syncs an email, that counts as a usage day. Turn off cellular data on landing if you want to keep some days free, then enable it deliberately.

TravelPass pricing detail

Per Verizon’s published TravelPass rates as of 2026:

• USD$12 per day in Indonesia (and most non-Mexico/Canada destinations)
• Day = 24 hours from your first use, not a calendar day
• Talk, text, and your domestic data allowance are included on activation days
• If you have an Unlimited Plus / Unlimited Welcome plan, your usage is metered against your home plan, not metered separately at international rates
• Older plans without Unlimited may incur additional per-minute or per-MB charges — check your plan’s roaming addendum on My Verizon

What an eSIM costs for the same Bali trip

Travelren sells four common Indonesia plans for travellers landing in Bali. Prices below are USD as of May 2026:

• 1GB / 7 days: approximately USD$3.12 — fine for navigation, messaging, occasional Google Maps
• 3GB / 30 days: approximately USD$6.24 — sweet spot for a 1-2 week beach trip with normal usage
• 5GB / 30 days: approximately USD$9.71 — comfortable for two-week stays with daily Reels / Instagram / video calls home
• 10GB / 30 days: approximately USD$15.26 — for digital-nomad weeks where you tether the laptop

The eSIM routes on the same Indosat / Telkomsel networks Verizon uses, so your in-country experience (speed, coverage in the villas, signal in the rice terraces) is the same. Browse the full Indonesia eSIM range for plans up to 50GB.

One real thing to know: an eSIM gives you a local Indonesian phone number for data only. Your Verizon number stops receiving SMS while the eSIM is active unless you keep both lines on (most modern iPhones support dual-SIM with eSIM + physical, and so do recent Pixel and Galaxy models). If you need your US number to keep ringing for a critical call from home or a 2FA code, leave Verizon turned on for SMS but with cellular data off, and use the eSIM for data. You won’t be charged TravelPass on a SMS-only day.

The honest break-even math

This is the calculation worth doing before you board:

Trip length	Verizon TravelPass	Travelren 3GB / 30 days	Cheaper option
1 day stopover	USD$12	USD$6.24	eSIM saves USD$5.76
3 days	USD$36	USD$6.24	eSIM saves USD$29.76
1 week	USD$84	USD$6.24	eSIM saves USD$77.76
2 weeks (typical Bali trip)	USD$168	USD$9.71 (5GB)	eSIM saves USD$158.29
3 weeks	USD$252	USD$15.26 (10GB)	eSIM saves USD$236.74

The eSIM is cheaper at every trip length including a single day. There is no scenario where TravelPass is the cheaper option for Bali specifically.

When Verizon TravelPass is actually the right call

The eSIM saves money on every Bali trip, but the dollar saving isn’t always worth the friction. TravelPass is the better pick if any of these apply:

• You’re transiting through Bali for under 12 hours with a long Singapore or Doha layover before or after — adding an eSIM you’ll use for half a day adds setup cost and you won’t notice the USD$6 difference
• You absolutely cannot have your US number go dark for any reason — receiving a critical 2FA SMS from your bank, a doctor calling, etc. Most modern phones can dual-SIM eSIM + physical, but if you’re on an older phone that can’t, TravelPass keeps your one line live
• You’re on a corporate Verizon plan where TravelPass is comped — some enterprise plans include international roaming. Confirm with your IT before assuming
• You hate phone settings — TravelPass auto-activates with zero configuration. eSIM requires a QR code scan and ~3 minutes of fiddling on landing

Will your phone work?

Almost certainly yes. Every iPhone XS or newer (2018+) supports eSIM, as does every Pixel 3 or newer, every Samsung Galaxy S20 or newer, and most modern Motorola, Nothing, and Sony phones. The exception that catches some Verizon customers off-guard: iPhones bought directly from Apple in mainland China don’t have eSIM hardware, even when the model number is otherwise identical to a US-purchased phone. If your iPhone was bought in China, you’ll need a physical SIM in Bali (which is harder to get and usually means a SIM kiosk at the airport).

For US-purchased iPhones: as of the iPhone 14 launch (2022), all iPhones sold in the US are eSIM-only — there is no physical SIM tray. Your eSIM-vs-Verizon decision is purely software at that point.

If you’re not sure, our device check page has the full list of confirmed-compatible phones.

Common questions

Can’t I just buy a SIM at Denpasar airport?

You can — there are Telkomsel and Indosat kiosks immediately past customs at DPS. Tourist SIMs typically cost IDR 100,000-200,000 (USD$6-13) for 5-15GB packages and require a passport for KYC under Indonesian law. The kiosks are reliable but you’ll often queue 20-40 minutes after landing. Setting up the eSIM on the plane (or at your gate before boarding) means you walk straight from immigration to your driver with working data.

What if I run out of data?

You can buy a top-up plan from the same provider in 5 minutes — it activates instantly, no second QR code. Travelren topups are visible in your account. For Verizon TravelPass, you don’t have a data cap because it draws from your home plan’s allowance, but if your home plan throttles after a soft cap you’ll feel it.

Can I keep iMessage and WhatsApp on my US number?

Yes for both. iMessage is tied to your Apple ID and US phone number — it works over data regardless of which SIM is providing that data. Same for WhatsApp, Signal, and Telegram. Your contacts will see messages from your usual number. The only thing that changes is which physical network is moving the bytes.

Can I make calls from the eSIM?

The Travelren Indonesia eSIM is data-only — it doesn’t include local voice minutes. For calls to family back home, use FaceTime, WhatsApp, Signal, or Google Meet over data. For calls to local Indonesian numbers (your driver, the villa manager), WhatsApp is the de facto standard in Bali — every driver, restaurant, and tour operator has WhatsApp.

The bottom line

For any trip to Bali longer than a few hours, an eSIM is the cheaper option by a wide margin. A 1-week trip costs USD$6.24 with Travelren versus USD$84 with Verizon TravelPass — that’s USD$78 saved on a single line of luggage worth of rupiah for cocktails. For 2 weeks the gap is USD$158.

The eSIM does require 3-5 minutes of setup on landing (or before takeoff) and means your US number drops to SMS-only on data days. If those constraints don’t matter to you, the answer is straightforward.

See the full Travelren Indonesia eSIM range →

Sources

• Verizon TravelPass FAQ + supported countries
• Indosat Ooredoo Hutchison — Indonesian primary network
• Opensignal Indonesia Mobile Network Experience
• Travelren Indonesia eSIM plans

Yes, Telstra works in the USA. International Day Pass auto-activates at AUD$10 per day for unlimited talk + text + 1GB data on T-Mobile’s network. A 2-week USA trip costs AUD$140 with Day Pass. The same trip with an eSIM costs around AUD$14. Honest math + when keeping Day Pass on makes sense below.

Travelren is an Aussie-built eSIM brand. We sell USA plans, so this comparison has stakes. We’ve put real numbers and the cases where Day Pass is genuinely the better choice.

The quick answer

• Telstra International Day Pass in USA: AUD$10/day for unlimited calls + SMS + 1GB data, auto-activates, only billed on usage days. Routes on T-Mobile.
• Travelren eSIM, 5GB / 30 days for USA: approximately AUD$14
• Crossover: on cost the eSIM is cheaper for any trip length — even a single day. Day Pass only competes as a zero-setup option for a one-day stopover.

How Telstra actually works in the USA

The USA has three main carriers: T-Mobile, Verizon, and AT&T. Telstra’s roaming partners route to T-Mobile as primary. T-Mobile has the strongest 5G rollout in the US — 5G reaches 98% of population. Speeds in cities like New York, LA, San Francisco, Chicago, Miami typically pull 80-250 Mbps on 5G.

Coverage in national parks is the weakness — Yellowstone, Yosemite, Glacier, Grand Canyon all have large dead zones, and rural Montana / Wyoming / Dakotas drop to 4G or lose signal. Same applies whether you’re on Day Pass or an eSIM (both route through T-Mobile primarily).

Day Pass detail for USA

• AUD$10 per 24-hour usage window from first activation
• Unlimited standard national + international calls and SMS
• 1GB of data per day; throttles to 64Kbps after the cap (no extra charge)
• Available on most post-paid Telstra plans

What an eSIM costs for the same USA trip

Travelren USA plans (AUD as of May 2026):

• 1GB / 7 days: approximately AUD$4 — light Manhattan stopover use
• 3GB / 30 days: approximately AUD$9 — sweet spot for 1-2 weeks normal usage
• 5GB / 30 days: approximately AUD$14 — comfortable for two-week US road trip with daily Reels / FaceTime home
• 10GB / 30 days: approximately AUD$23 — heavy use, daily video calls, tethered laptop
• 20GB / 30 days: approximately AUD$37 — peace of mind on a long circuit

The eSIM routes on T-Mobile and Verizon — same T-Mobile primary as Telstra Day Pass. Browse the full USA eSIM range.

Break-even math

Trip length	Telstra Day Pass	Travelren 3GB / 30 days	Cheaper option
1 day stopover (LAX transit)	AUD$10	AUD$4 (1GB / 7 days)	eSIM saves AUD$6
3 days (NYC weekend)	AUD$30	AUD$9 (3GB)	eSIM saves AUD$21
1 week	AUD$70	AUD$9 (3GB)	eSIM saves AUD$61
2 weeks (East + West coast)	AUD$140	AUD$14 (5GB)	eSIM saves AUD$126
3 weeks (cross-country road trip)	AUD$210	AUD$23 (10GB)	eSIM saves AUD$187

When Telstra Day Pass is the right call for the USA

• 1-day LAX or SFO stopovers where you won’t set up an eSIM — the eSIM is cheaper even here, but one AUD$10 Day Pass day is a fine no-effort option for a single transit day
• You make a lot of voice calls — Day Pass includes unlimited; eSIM is data-only
• Single-SIM phone where you can’t keep your Aussie number live alongside an eSIM
• Corporate plan with Day Pass comped

Will your phone work?

Almost certainly yes. iPhone XS+, Pixel 3+, Galaxy S20+ all support eSIM. AU iPhones have physical SIM trays for dual-SIM use.

Exception: iPhones bought in mainland China don’t have eSIM hardware. Device check page has the full list.

Common questions

Will my phone work in Yellowstone / Yosemite / Grand Canyon?

Partial — interior dead zones exist on T-Mobile (and Verizon, and AT&T) in all major US national parks. Download Google Maps offline for hikes. Same applies whether you’re on Day Pass or eSIM.

Can I just buy a SIM at LAX / JFK?

You can but US tourist SIM kiosks are rare and expensive. T-Mobile and AT&T both sell prepaid plans through their stores but you’ll need to take a Lyft to a retail location. The eSIM at AUD$9 is significantly easier.

Will iMessage and WhatsApp keep working?

Yes. Both tied to your Apple ID / phone number registration, not the network. Work on any data connection.

Does Uber / Lyft work on the eSIM?

Yes. Both apps use your account login, not your phone number. Sign up before flying so you don’t need SMS verification on landing.

The bottom line

For any USA trip, an eSIM is meaningfully cheaper than Telstra International Day Pass. A 2-week US holiday: AUD$14 with Travelren versus AUD$140 with Day Pass — AUD$126 saved on a few extra dinners. Day Pass no longer wins on price even for a single day; it’s now just a zero-setup option for a quick stopover.

See the full Travelren USA eSIM range →

Sources

• Telstra International Day Pass
• T-Mobile USA coverage map
• Opensignal USA Mobile Network Experience
• Travelren USA eSIM plans

Yes, Telstra works in Thailand. International Day Pass auto-activates at AUD$10 per day for unlimited standard calls, unlimited SMS, and 2GB of data. A Travelren Thailand eSIM is about AUD$6 for 3GB over 30 days. On price the eSIM wins from the very first day, and the gap widens fast — but Day Pass still has two situations where it is the better call, and they are not about money. Below: what each actually costs, and how to pick.

Correction, August 2026: an earlier version of this article said Telstra charged AUD$2.50/day in Thailand and advised keeping Day Pass on for short stopovers. That was wrong. Telstra’s International Day Pass has two published tiers — Zone 1 at $5/day covering New Zealand and six Oceania destinations, and Zone 2 at $10/day covering the 80+ other destinations, Thailand among them. There is no discounted Thailand rate. The costs and the recommendation below have been corrected.

Travelren is an Australian-built eSIM brand. We sell Thailand plans, so this comparison has stakes and you should read it knowing that. We have kept the section on when Telstra is the better choice, because it is still true.

The quick answer

• Telstra International Day Pass in Thailand: AUD$10/day (Zone 2) for unlimited standard calls + SMS + 2GB data, charged only on days you use the service. Routes on AIS, the strongest Thai 5G network.
• Travelren eSIM, 3GB / 30 days: approximately AUD$6
• Crossover: there isn’t one. A single day of Day Pass costs more than a 30-day eSIM. Roaming wins only on convenience or voice calls, never on price.

How Telstra actually works in Thailand

Thailand has three main carriers: AIS, True Corp, and dtac. Telstra’s roaming partners route to AIS, which has the strongest 5G rollout in Thailand — solid 5G in Bangkok, Phuket, Pattaya, and Chiang Mai’s old city. 4G LTE everywhere else, including Koh Samui, Koh Phangan, Koh Tao, Phi Phi, and Krabi.

Speeds in tourist zones typically 30-100 Mbps on 5G, 15-40 Mbps on 4G. Day Pass auto-activates on first use, and Telstra sends an SMS confirming the charge. That auto-activation matters: if you land, forget to switch off data, and your phone syncs email in the taxi, you have spent $10 before you reach the hotel.

How Telstra’s zones actually work

Telstra prices Day Pass in two tiers, and it is worth knowing which one you are in before you fly:

• Zone 1 — AUD$5/day: New Zealand plus six Oceania destinations. This is the only discounted tier Telstra publishes.
• Zone 2 — AUD$10/day: the 80+ remaining destinations across Asia, Europe, the Americas and Africa. Thailand sits here, alongside Japan, Singapore, Indonesia, the USA, the UK and Italy.

Both tiers include the same allowance: 2GB of data per day, unlimited standard calls, unlimited SMS. Only the price differs. There is no Asia-specific discount and no Thailand exception — Thailand costs exactly what Japan or the USA costs.

Zones do change. Check the current rate for your specific plan in the My Telstra app before flying rather than trusting any comparison article, including this one.

What an eSIM costs for Thailand

Travelren Thailand plans (AUD, current as of August 2026):

• 1GB / 7 days: approximately AUD$4 — light Bangkok stopover use
• 2GB / 15 days: approximately AUD$5.50 — a short trip with maps and messaging
• 3GB / 30 days: approximately AUD$6 — sweet spot for 1-2 week trips
• 5GB / 30 days: approximately AUD$8 — comfortable for an islands trip with daily content
• 10GB / 30 days: approximately AUD$11 — heavy use, tethering laptops
• 20GB / 30 days: approximately AUD$18 — peace of mind on a long circuit

The eSIM routes on AIS — the same primary network Telstra roams onto, so the coverage and speeds are the same. Browse the full Thailand eSIM range.

Break-even math

Day Pass bills per day of use. The eSIM is a single upfront cost for the whole validity window. That difference compounds quickly:

Trip length	Telstra Day Pass	Travelren eSIM	Cheaper option
1 day stopover	AUD$10	AUD$4 (1GB / 7 days)	eSIM cheaper by $6
2 days	AUD$20	AUD$4 (1GB / 7 days)	eSIM saves AUD$16
3 days (Bangkok weekend)	AUD$30	AUD$6 (3GB / 30 days)	eSIM saves AUD$24
1 week	AUD$70	AUD$6 (3GB / 30 days)	eSIM saves AUD$64
2 weeks (Bangkok + islands)	AUD$140	AUD$8 (5GB / 30 days)	eSIM saves AUD$132
3 weeks (full Thailand circuit)	AUD$210	AUD$11 (10GB / 30 days)	eSIM saves AUD$199

Day Pass only bills on days you actually use data, so a trip where you stay on hotel WiFi for half of it costs less than the table shows. Even so, the arithmetic does not get close: two billed days cost more than the most expensive 30-day plan we sell except the unlimited tiers.

The honest take on Thailand specifically

We used to say Thailand was the one destination where Telstra Day Pass was worth keeping on for a short trip. That was based on a rate Telstra does not charge. With the real Zone 2 pricing, Thailand is an ordinary case: the eSIM is cheaper at every trip length, including a one-day stopover.

What Day Pass genuinely buys you is not data. It is your Australian number staying fully live — you can take a call from work, receive any SMS, and never touch a setting. A Travelren eSIM is data-only, so voice and SMS on your Australian number keep working through your normal Telstra service alongside it, but calls made while abroad bill at Telstra’s standard international rates unless Day Pass is active.

For most travellers that is worth about ten dollars once, not ten dollars a day.

When Telstra Day Pass is still the right call for Thailand

• You genuinely need to make voice calls on your Australian number — Day Pass includes unlimited standard calls. The eSIM is data-only, so you would be calling over WhatsApp, FaceTime or LINE instead. If you are travelling for work and people ring you, this is a real reason.
• Single-SIM phone that cannot run a second line — rare on anything recent, but if your handset cannot dual-SIM, Day Pass avoids choosing between your Australian number and data.
• Corporate plan where Day Pass is comped — if your employer is paying, price is not the deciding factor.

Notice that none of these are price arguments. If cost is what you care about, the eSIM wins in Thailand at every trip length.

Will your phone work?

Almost certainly yes. iPhone XS+ (2018+), Pixel 3+, Galaxy S20+ all support eSIM. AU-sold iPhones still have physical SIM trays (only US iPhones are eSIM-only).

Exception: iPhones bought directly in mainland China don’t have eSIM hardware. Our device check page has the full list.

Common questions

What about buying a SIM at Suvarnabhumi (BKK) or Don Muang (DMK)?

Both airports have AIS, True, and dtac kiosks at arrivals. Tourist SIMs run THB 200-500 (AUD$8-22) for 5-15GB packages and require a passport. The kiosks are reliable but you’ll typically queue 20-30 minutes after a long Sydney–BKK flight. Setting up the eSIM in your seat before landing means walking straight to your driver.

Should I install LINE before going?

LINE is the dominant messaging app in Thailand — every hotel, tour guide, taxi driver uses it. WhatsApp works for tourist-facing businesses but LINE will improve communication with locals. Free, runs over data. Install before flying.

Will I have signal on Koh Samui / Phi Phi / Phuket?

Yes on all major tourist islands. AIS has thorough coverage across southern Thailand. Speeds are lower on smaller islands and remote beaches but you’ll have functional 4G almost everywhere a tourist goes. Deep Khao Sok jungle and remote Andaman snorkel spots are the only true dead zones.

Does Grab work on the eSIM?

Yes. Grab uses your Grab account login, not your phone number. Bolt works similarly. Both run over any data connection.

How do I stop Day Pass activating by accident?

Turn off data roaming on your Telstra line before you land, and leave it off. Day Pass triggers on first use of data, calls or SMS abroad, so a background app sync is enough to start a billing day. With the Travelren eSIM set as your data line and roaming disabled on the Telstra line, you keep your Australian number for incoming calls without triggering the $10 charge.

The bottom line

Thailand is not the exception we once described it as. Telstra charges AUD$10 per day there under Zone 2 — the same as Japan, Singapore or the USA — while a Travelren Thailand eSIM is about AUD$6 for 3GB across 30 days. The eSIM is cheaper from day one and saves AUD$64 on a one-week trip. Keep Day Pass only if you need voice calls on your Australian number or someone else is paying for it.

See the full Travelren Thailand eSIM range →

Sources

• Telstra International Roaming — Day Pass zones and daily rates
• Telstra International Day Pass — Critical Information Summary
• AIS Thailand 5G coverage
• Opensignal Thailand Mobile Network Experience
• Travelren Thailand eSIM plans
• Pillar comparison: Travelren vs Airalo vs Holafly for Australian travellers

Yes, Telstra works in Japan. International Day Pass auto-activates and gives you talk, text, and 1GB of data per day at AUD$10 per day on SoftBank’s network. For a typical 10-day Japan trip — Tokyo, Kyoto, Osaka — that’s AUD$100. An eSIM for the same trip costs around AUD$11. Honest math + when keeping Telstra’s Day Pass on is the right call below.

Travelren is an Aussie-built eSIM brand and we sell Japan plans, so this comparison has stakes. We’ve put real numbers and the cases where Telstra Day Pass is genuinely the better choice. They exist.

The quick answer

• Telstra International Day Pass in Japan: AUD$10/day for unlimited talk + text + 1GB data, auto-activates, charged per usage day. Soft 1GB cap then throttles, doesn’t cut off.
• Travelren eSIM, 3GB / 30 days: approximately AUD$8
• Crossover: on cost the eSIM is cheaper for any trip length — even a single day (a 1GB / 7-day plan is about AUD$4, less than one Day Pass day).

How Telstra actually works when you land in Japan

Japan has three main carriers: NTT Docomo, SoftBank, and KDDI au. Telstra’s roaming agreements route to SoftBank as the primary network. Coverage is excellent across Tokyo, Osaka, Kyoto, Hiroshima, Fukuoka — basically every city an Australian first-time visitor goes to. 5G in city centres typically pulls 100+ Mbps; 4G LTE everywhere else, including the shinkansen between cities.

NTT Docomo has slightly stronger rural coverage than SoftBank in mountain regions and rural Tohoku, but no consumer eSIM brand and no Australian carrier roams Docomo-primary. For city Japan trips this is invisible.

Day Pass auto-activates on first use. Telstra sends an SMS confirming the AUD$10 charge for that day. Days you don’t use the network aren’t billed — but background syncs and notifications count as use. Disable cellular data on landing if you want to skip days.

Telstra International Day Pass detail

• AUD$10 per 24-hour usage window from first activation
• Includes unlimited standard national + international calls and SMS
• 1GB of data per day; throttles to 64Kbps after the cap (no extra charge)
• Available on most post-paid Telstra plans; verify your specific plan in My Telstra
• Hard cap: USD doesn’t apply, this is straight AUD billing on your Telstra account

What an eSIM costs for the same Japan trip

Travelren Japan plans (AUD as of May 2026):

• 1GB / 7 days: approximately AUD$4 — fine for a weekend in Tokyo with hotel WiFi
• 3GB / 30 days: approximately AUD$8 — sweet spot for 1-2 weeks
• 5GB / 30 days: approximately AUD$11 — comfortable for two-week trips with daily Reels and FaceTime home
• 10GB / 30 days: approximately AUD$18 — heavy use, tethering laptops, daily video calls
• 20GB / 30 days: approximately AUD$25 — long stays or a couple sharing one hotspot

The eSIM routes on the same SoftBank and KDDI au networks Telstra uses. Browse the full Japan eSIM range.

Break-even math

Trip length	Telstra Day Pass	Travelren eSIM	Cheaper option
1 day stopover (Narita transit)	AUD$10	AUD$4 (1GB / 7 days)	eSIM saves AUD$6
3 days (Tokyo weekend)	AUD$30	AUD$8 (3GB / 30 days)	eSIM saves AUD$22
1 week	AUD$70	AUD$8 (3GB / 30 days)	eSIM saves AUD$62
10 days (Tokyo–Kyoto–Osaka)	AUD$100	AUD$11 (5GB / 30 days)	eSIM saves AUD$89
2 weeks (Japan circuit)	AUD$140	AUD$18 (10GB / 30 days)	eSIM saves AUD$122
3 weeks (Japan + Hokkaido)	AUD$210	AUD$18 (10GB / 30 days)	eSIM saves AUD$192

Unlike a couple of years ago, the eSIM now wins on pure cost even for a single day — a 1GB / 7-day plan (about AUD$4) is cheaper than one AUD$10 Day Pass day. So the case for Day Pass is no longer about price; it’s about the things below.

When Telstra International Day Pass is actually the right call

• 1-day stopovers where you won’t set anything up — the eSIM is cheaper even here, but if it’s a single transit day and you’d rather not install a plan, one AUD$10 Day Pass day is a fine no-effort option
• You can’t have your Aussie number go silent — bank 2FA SMS, work calls. Modern dual-SIM phones can handle this with eSIM + physical, but if your phone is single-SIM only, Day Pass keeps your line live
• You make a lot of standard voice calls — Day Pass includes unlimited calls; the eSIM is data-only and you’d use FaceTime / WhatsApp / Signal for voice
• Corporate plan with Day Pass comped — verify with IT before flying
• You hate fiddling with phone settings — Day Pass auto-activates

Will your phone work?

Almost certainly yes. iPhone XS+ (2018+), Pixel 3+, Galaxy S20+ all support eSIM. iPhone 14+ has eSIM but Australian iPhones still have a physical SIM tray (US iPhone 14+ are eSIM-only — that’s a US-specific change).

Exception: iPhones bought directly from Apple in mainland China don’t have eSIM hardware even when the model number is otherwise identical. If your iPhone was bought in China, you’ll need Day Pass or a physical SIM. Our device check page has the full list.

Common questions

Can’t I just buy a SIM at Narita / Haneda?

You can — but Japanese tourist SIMs are notoriously expensive (JPY 4,000-8,000 / AUD$40-80 for 7-15 days) and the kiosks queue badly during peak arrival hours. The eSIM at AUD$8 is significantly cheaper and you walk straight from immigration to the train.

What about pocket WiFi?

Pocket WiFi rental at the airport is AUD$50-100 for a week and gets you the same SoftBank coverage as your phone would have on an eSIM. The eSIM is the same product without the extra device to charge.

Will iMessage and WhatsApp keep working?

Yes. Both are tied to your Apple ID / phone number registration, not the network. As long as your phone has data (from any source), they keep working on your usual Australian number.

How do I top up Suica or Pasmo without a Japanese phone number?

Apple Wallet’s Suica works on any iPhone with eSIM data — it doesn’t require a Japanese phone number. You can top up via Apple Pay using your Australian credit card. Same for Pasmo.

Do shinkansen tunnels have signal?

Mostly yes. SoftBank has installed signal repeaters in most major shinkansen tunnels. You’ll drop briefly in some longer mountain tunnels but rarely more than a couple of minutes.

The bottom line

For any Japan trip, an eSIM is meaningfully cheaper than Telstra International Day Pass. A 10-day trip: about AUD$11 with Travelren versus AUD$100 with Day Pass — that’s AUD$89 saved on a memorable kaiseki dinner.

Day Pass no longer wins on price, even for a single day. Where it still earns its keep is keeping your Australian number live for calls and 2FA on a single-SIM phone, and needing zero setup. For everything else, the eSIM wins.

See the full Travelren Japan eSIM range →

Sources

• Telstra International Day Pass official page
• SoftBank Japan — primary roaming partner
• Opensignal Japan Mobile Network Experience
• Travelren Japan eSIM plans
• Pillar comparison: Travelren vs Airalo vs Holafly for Australian travellers

Yes, Telstra works in Italy. International Day Pass auto-activates at AUD$10 per day for unlimited talk + text + 1GB data on TIM (Telecom Italia). A 10-day Rome–Florence–Venice trip costs AUD$100. The same trip with an eSIM costs around AUD$8.50. Honest math + when to grab a Europe regional eSIM instead below.

Travelren is an Aussie-built eSIM brand. We sell Italy plans + Europe regional plans, so we have a stake. Here’s the honest comparison.

The quick answer

• Telstra International Day Pass in Italy: AUD$10/day, unlimited calls + SMS + 1GB data, only on usage days
• Travelren eSIM, 3GB / 30 days for Italy: approximately AUD$8.50
• Travelren Europe regional 5GB / 30 days: approximately AUD$22 — covers 30+ countries including Italy, France, Switzerland, Germany, Spain
• Crossover: the eSIM is cheaper for any trip 2+ days.

How Telstra actually works in Italy

Italy has three main carriers: TIM, Vodafone Italia, and WindTre. Telstra’s roaming partners route to TIM as primary. Coverage is excellent across Rome, Florence, Venice, Milan, Naples — basically every tourist destination. 5G is solid in cities; 4G LTE everywhere else including Cinque Terre, Amalfi, and Tuscan countryside. Speeds in cities typically 50-150 Mbps on 5G.

Day Pass detail for Italy

• AUD$10 per 24-hour usage window from first activation
• Unlimited national + international calls and SMS
• 1GB of data per day; throttles to 64Kbps after the cap

What an eSIM costs for Italy

Travelren Italy plans (AUD as of May 2026):

• 1GB / 7 days: approximately AUD$4 — light Rome long weekend use
• 3GB / 30 days: approximately AUD$8.50 — sweet spot for 1-2 week Italy trip
• 5GB / 30 days: approximately AUD$13 — comfortable for two-week trip with daily Reels
• 10GB / 30 days: approximately AUD$20.50 — heavy use, tethering, video calls

The eSIM routes on TIM and Vodafone — same primary network Telstra uses. Browse the full Italy eSIM range.

If Italy is part of a larger Europe trip — get the regional plan

The single most useful tip in this article: if your trip is Italy plus any other European country (France, Switzerland, Germany, Spain, Greece, Netherlands…), buy a Europe regional eSIM, not a country-specific Italy one. Travelren’s Europe 5GB / 30 days at AUD$22 covers 30+ countries with one eSIM. No swapping at borders.

This is also where Airalo’s Eurolink regional plan is genuinely competitive — both are good options for multi-country Europe trips. The Italy-only single-country plan only makes sense if Italy is your only destination.

Break-even math

Trip length	Telstra Day Pass	Travelren 3GB / 30 days	Cheaper option
1 day stopover (FCO transit)	AUD$10	AUD$8.50	eSIM cheaper by $1.50
3 days (Rome weekend)	AUD$30	AUD$8.50	eSIM saves AUD$21.50
10 days (Italy circuit)	AUD$100	AUD$8.50	eSIM saves AUD$91.50
2 weeks (Italy + Tuscany)	AUD$140	AUD$13 (5GB)	eSIM saves AUD$127
2 weeks (Italy + France + Switzerland)	AUD$140 + roaming in other countries	AUD$22 (Europe regional 5GB)	Regional eSIM dramatically cheaper

When Telstra Day Pass is the right call

• 1-day stopover at FCO or MXP — eSIM saves only AUD$1.50, so a single Day Pass day is fine if you’d rather not set up
• You make a lot of voice calls — Day Pass includes unlimited; the eSIM is data-only
• Single-SIM phone — keeping your Aussie number live for SMS
• Corporate plan with Day Pass comped

Will your phone work?

iPhone XS+, Pixel 3+, Galaxy S20+ all support eSIM. AU iPhones have physical SIM trays for dual-SIM use. Exception: iPhones bought in mainland China don’t have eSIM. Device check page has the full list.

Common questions

Can I buy a SIM at FCO / MXP?

Yes — TIM, Vodafone, WindTre have airport kiosks. Italy requires passport for SIM activation under EU regulation. Tourist SIMs run EUR 20-40 (AUD$33-66) for 30 days — roughly 4-7× more expensive than the eSIM.

Do trains have signal between cities?

Mostly yes on Frecciarossa high-speed lines (Rome–Florence–Milan). Tunnels drop signal briefly but rarely more than a couple of minutes. Slower regional trains have variable coverage.

Will I have signal in Cinque Terre / Amalfi?

Yes in towns and along train routes. Coverage drops in parts of the coastal walks and remote rural Tuscany — download offline Google Maps for hikes.

Will iMessage and WhatsApp keep working?

Yes. Both work on any data connection. Your Aussie number stays the registration.

The bottom line

For any Italy trip beyond a 1-day stopover, an eSIM beats Day Pass on price. A 10-day Italy trip: AUD$8.50 vs AUD$100 — AUD$91.50 saved. If your trip extends to other European countries, the regional eSIM at AUD$22 covers 30+ countries on one plan.

See the full Travelren Italy eSIM range → | Or browse Europe regional plans

Sources

• Telstra International Day Pass
• TIM Italia 5G coverage
• Opensignal Italy Mobile Network Experience
• Travelren Italy eSIM plans

Yes, EE works in the USA. EE’s Roam Abroad add-on charges GBP£5 per day outside the EU for talk, text, and your home plan’s data on T-Mobile or AT&T. A 2-week USA trip costs £70 with Roam Abroad. The same trip with an eSIM costs around £7.27. Honest math + when keeping EE roaming on is the right call below.

This is written by Travelren, an eSIM brand. We sell USA plans, so this comparison has stakes. We’ve put real numbers and the cases where EE roaming is genuinely the better choice.

The quick answer

• EE Roam Abroad in USA: £5/day for unlimited calls + texts + your home plan data, only on usage days. Routes on T-Mobile or AT&T.
• Travelren eSIM, 5GB / 30 days for USA: approximately £7.27
• Crossover: on cost the eSIM is cheaper for any trip length; EE only competes as a zero-setup option for a single day.

How EE actually works in the USA

The USA has three main carriers: T-Mobile, Verizon, and AT&T. EE’s roaming partners route to T-Mobile primarily, with AT&T as fallback. T-Mobile has the strongest 5G in the US — 5G reaches 98% of population. Speeds in NYC, LA, San Francisco, Chicago, Miami typically 80-250 Mbps on 5G.

National parks are the weakness — Yellowstone, Yosemite, Glacier, Grand Canyon all have large dead zones, and rural Montana / Wyoming / Dakotas drop to 4G or lose signal. Same applies whether you’re on EE Roam Abroad or an eSIM (both route through T-Mobile primarily).

EE Roam Abroad detail

• £5 per day for non-EU destinations (USA, Australia, Japan, Thailand, etc.)
• Free roaming in 49 EU + EEA destinations included on most plans
• Includes UK plan allowances (calls, texts, data) on activation days
• Pay-as-you-go option exists but Roam Abroad’s £5/day cap is much cheaper
• Verify your specific EE plan via the EE app — older plans may differ

What an eSIM costs for the same USA trip

Travelren USA plans (GBP as of May 2026):

• 1GB / 7 days: approximately £2.08 — light NYC stopover use
• 3GB / 30 days: approximately £4.67 — sweet spot for 1-2 weeks
• 5GB / 30 days: approximately £7.27 — comfortable for two-week US road trip
• 10GB / 30 days: approximately £11.95 — heavy use, daily video calls, tethering
• 20GB / 30 days: approximately £19.22 — peace of mind

The eSIM routes on T-Mobile and Verizon — same T-Mobile primary as EE Roam Abroad. Browse the full USA eSIM range.

Break-even math

Trip length	EE Roam Abroad	Travelren 3GB / 30 days	Cheaper option
1 day stopover (LAX transit)	£5	£4.67	eSIM saves £0.33
3 days (NYC weekend)	£15	£4.67	eSIM saves £10.33
1 week	£35	£4.67	eSIM saves £30.33
2 weeks (East + West coast)	£70	£7.27 (5GB)	eSIM saves £62.73
3 weeks (cross-country)	£105	£11.95 (10GB)	eSIM saves £93.05

When EE Roam Abroad is the right call

• 1-day LAX or SFO stopovers where you won’t set up an eSIM — the eSIM is a touch cheaper even here, but one £5 Roam Abroad day is a fine no-effort option for a single transit day
• You make a lot of voice calls — Roam Abroad includes calls; the eSIM is data-only
• Single-SIM phone where you can’t dual-SIM with an eSIM + physical
• Corporate EE plan with Roam Abroad comped
• You want zero setup — EE roams automatically, eSIM needs a QR code scan

Will your phone work?

iPhone XS+, Pixel 3+, Galaxy S20+ all support eSIM. UK iPhones have physical SIM trays for dual-SIM. Exception: iPhones bought in mainland China don’t have eSIM. Device check page has the full list.

Common questions

Can I buy a SIM at LAX / JFK / ORD?

Possible but harder than in Europe — the US doesn’t have airport SIM kiosks the way LHR does. T-Mobile and AT&T sell prepaid plans through stores in town. The eSIM at £4.67 is significantly easier.

Will my phone work in Yellowstone / Grand Canyon?

Partial — interior dead zones in all major US national parks regardless of carrier. Download Google Maps offline.

Will iMessage and WhatsApp keep working?

Yes. Both tied to your Apple ID / phone number registration, not the network. Work on any data connection.

How do I call home from the US on the eSIM?

FaceTime, WhatsApp, or Signal voice calls over data. UK 0844 / 0345 numbers may have country-specific issues but standard mobile and landline UK numbers work fine through these apps.

The bottom line

For any USA trip, an eSIM is meaningfully cheaper than EE Roam Abroad. A 2-week US trip: £7.27 with Travelren versus £70 with Roam Abroad — £62 saved on a couple of dinners. Roam Abroad is now only worth it as a zero-setup option for a single transit day.

See the full Travelren USA eSIM range →

Sources

• EE Roam Abroad official rates
• T-Mobile USA coverage
• Opensignal USA Mobile Network Experience
• Travelren USA eSIM plans
• Pillar comparison: Travelren vs Airalo vs Holafly for UK travellers

Yes, EE works in Thailand. EE’s Roam Abroad add-on charges £5 per day for talk, text, and your home plan’s data on AIS, Thailand’s strongest 5G network. A 2-week Bangkok + islands trip costs £70 with Roam Abroad. The same trip with an eSIM costs around £4.16. Honest math + when EE Roam Abroad is the right call below.

Travelren is an eSIM brand. We sell Thailand plans, so this comparison has stakes. Honest comparison for UK travellers below.

The quick answer

• EE Roam Abroad in Thailand: £5/day, unlimited calls + texts + your home data, only on usage days. Routes on AIS.
• Travelren eSIM, 3GB / 30 days for Thailand: approximately £3.12
• Crossover: the eSIM is cheaper for any trip including a single day.

How EE actually works in Thailand

Thailand has three main carriers: AIS, True Corp, and dtac. EE’s roaming partners route to AIS, the strongest 5G network. Solid 5G in Bangkok, Phuket, Pattaya, Chiang Mai. 4G LTE everywhere else including Koh Samui, Koh Phangan, Koh Tao, and Phi Phi.

Speeds in tourist areas typically 30-100 Mbps on 5G, 15-40 Mbps on 4G. Roam Abroad triggers automatically on first use; EE sends an SMS confirming.

Roam Abroad detail for Thailand

• £5 per 24-hour usage window from first activation
• Unlimited calls + texts to UK and Thailand
• Your UK plan data allowance available on activation days
• Available on most current EE plans — verify yours via the app

What an eSIM costs for Thailand

Travelren Thailand plans (GBP as of May 2026):

• 1GB / 7 days: approximately £2.08 — light Bangkok stopover
• 3GB / 30 days: approximately £3.12 — sweet spot for 1-2 weeks
• 5GB / 30 days: approximately £4.16 — comfortable for islands trip with daily content
• 10GB / 30 days: approximately £5.71 — heavy use, tethering laptops
• 20GB / 30 days: approximately £9.35 — peace of mind

The eSIM routes on AIS — same primary network EE uses. Browse the full Thailand eSIM range.

Break-even math

Trip length	EE Roam Abroad	Travelren 3GB / 30 days	Cheaper option
1 day stopover	£5	£3.12	eSIM cheaper by £1.88
3 days (Bangkok weekend)	£15	£3.12	eSIM saves £11.88
1 week	£35	£3.12	eSIM saves £31.88
2 weeks (Bangkok + islands)	£70	£4.16 (5GB)	eSIM saves £65.84
3 weeks (full Thailand)	£105	£5.71 (10GB)	eSIM saves £99.29

When EE Roam Abroad is the right call

• You make a lot of voice calls — Roam Abroad includes calls; the eSIM is data-only
• Single-SIM phone where you can’t dual-SIM
• Corporate EE plan with Roam Abroad comped
• You want zero setup — Roam Abroad activates automatically

Note: unlike most non-EU destinations, in Thailand the eSIM is cheaper even for a 1-day trip. There’s no clear “Roam Abroad wins” scenario for Thailand on price alone.

Will your phone work?

iPhone XS+, Pixel 3+, Galaxy S20+ all support eSIM. UK iPhones have physical SIM trays for dual-SIM. Exception: iPhones from mainland China don’t have eSIM hardware. Device check page has the full list.

Common questions

Can I buy a SIM at Suvarnabhumi (BKK) or Don Muang (DMK)?

Yes — AIS, True, dtac all have airport kiosks. Tourist SIMs run THB 200-500 (£4.50-12) for 5-15GB packages and require a passport. Reliable but you’ll queue 20-30 minutes. The eSIM is significantly easier.

Should I install LINE before going?

LINE is the dominant messaging app in Thailand — every hotel, tour guide, taxi driver uses it. WhatsApp works for tourist-facing businesses but LINE is better for local communication. Free. Install before flying.

Will I have signal on Koh Samui / Phi Phi / Phuket?

Yes on all major tourist islands and routes between them. AIS has thorough coverage of southern Thailand. Speeds drop on smaller islands but you’ll have 4G almost everywhere a tourist goes.

Does Grab work on the eSIM?

Yes. Grab uses your account login, not your phone number. Works on any data connection.

The bottom line

For any Thailand trip including a single day, an eSIM beats EE Roam Abroad on price. A 2-week Thailand trip: £4.16 with Travelren versus £70 with Roam Abroad — £65 saved on cocktails for the week.

See the full Travelren Thailand eSIM range →

Sources

• EE Roam Abroad rates
• AIS Thailand 5G coverage
• Opensignal Thailand Mobile Network Experience
• Travelren Thailand eSIM plans
• Pillar comparison: Travelren vs Airalo vs Holafly for UK travellers

Yes, EE works in Japan. EE’s Roam Abroad add-on charges £5 per day for talk, text, and your home plan’s data on SoftBank’s network. A typical 10-day Japan trip — Tokyo, Kyoto, Osaka — costs £50 with Roam Abroad. The same trip with an eSIM costs around £4.16. Honest math + when EE roaming is the right call below.

Travelren is an eSIM brand. We sell Japan plans, so this comparison has stakes. Here’s the honest comparison for UK travellers.

The quick answer

• EE Roam Abroad in Japan: £5/day, unlimited calls + texts + your home plan data, only on usage days. Routes on SoftBank.
• Travelren eSIM, 3GB / 30 days for Japan: approximately £4.16
• Crossover: on cost the eSIM is cheaper for any trip length — even a single day.

How EE actually works when you land in Japan

Japan has three main carriers: NTT Docomo, SoftBank, and KDDI au. EE’s roaming partners route to SoftBank. Coverage is excellent across Tokyo, Osaka, Kyoto, Hiroshima, Fukuoka. 5G in city centres typically pulls 100+ Mbps; 4G LTE everywhere else, including the shinkansen between cities.

Roam Abroad activates automatically on first use. EE sends an SMS confirming. Days you don’t use the network aren’t billed — but background syncs count as usage. Disable cellular data on landing if you want some quiet days.

EE Roam Abroad detail for Japan

• £5 per 24-hour usage window from first activation
• Unlimited calls + texts to UK and Japan
• Your UK plan data allowance available on activation days
• EU/EEA destinations are free (different to non-EU like Japan)
• Verify your specific EE plan via the app — older plans may differ

What an eSIM costs for the same Japan trip

Travelren Japan plans (GBP as of May 2026):

• 1GB / 7 days: approximately £2.08 — light Tokyo weekend use
• 3GB / 30 days: approximately £4.16 — sweet spot for 1-2 weeks
• 5GB / 30 days: approximately £5.71 — comfortable for two-week trip with daily Reels and FaceTime home
• 10GB / 30 days: approximately £9.35 — heavy use, tethering, video calls
• 20GB / 30 days: approximately £12.99 — peace of mind

The eSIM routes on SoftBank — same primary network EE uses. Browse the full Japan eSIM range.

Break-even math

Trip length	EE Roam Abroad	Travelren 3GB / 30 days	Cheaper option
1 day stopover (Tokyo transit)	£5	£4.16	eSIM saves £0.84
3 days (Tokyo weekend)	£15	£4.16	eSIM saves £10.84
1 week	£35	£4.16	eSIM saves £30.84
10 days (Tokyo–Kyoto–Osaka)	£50	£4.16	eSIM saves £45.84
2 weeks (Japan circuit)	£70	£5.71 (5GB)	eSIM saves £64.29
3 weeks (Japan + Hokkaido)	£105	£9.35 (10GB)	eSIM saves £95.65

When EE Roam Abroad is the right call

• 1-day Tokyo stopovers where you won’t set up an eSIM — the eSIM is a touch cheaper even here, but one £5 Roam Abroad day is a fine no-effort option for a single transit day
• You make a lot of voice calls — Roam Abroad includes calls home; the eSIM is data-only
• Single-SIM phone where you can’t dual-SIM
• Corporate EE plan with Roam Abroad comped
• You want zero setup — EE roams automatically

Will your phone work?

iPhone XS+, Pixel 3+, Galaxy S20+ all support eSIM. UK iPhones have physical SIM trays for dual-SIM. Exception: iPhones bought in mainland China don’t have eSIM. Device check page has the full list.

Common questions

Can I buy a SIM at Narita / Haneda?

You can — but Japanese tourist SIMs are notoriously expensive (JPY 4,000-8,000 / £20-45 for 7-15 days) and the kiosks queue badly. The eSIM at £4.16 is much cheaper.

What about pocket WiFi?

Pocket WiFi rental at the airport is £30-60 for a week and gets you the same SoftBank coverage as your phone would have on an eSIM. The eSIM is the same product without the extra device.

Will iMessage and WhatsApp keep working?

Yes. Both tied to your Apple ID / phone number registration. Work on any data connection.

How do I top up Suica without a Japanese phone number?

Apple Wallet’s Suica works on any iPhone with eSIM data — doesn’t require a Japanese phone number. Top up via Apple Pay using your UK card.

The bottom line

For any Japan trip, an eSIM beats EE Roam Abroad on price. A 10-day Japan trip: £4.16 with Travelren versus £50 with Roam Abroad — £45.84 saved.

See the full Travelren Japan eSIM range →

Sources

• EE Roam Abroad rates
• SoftBank Japan
• Opensignal Japan Mobile Network Experience
• Travelren Japan eSIM plans
• Pillar comparison: Travelren vs Airalo vs Holafly for UK travellers

Yes, AT&T works in South Korea. International Day Pass auto-activates at USD$12 per day for talk, text, and data on KT (Korea Telecom) or SK Telecom — both rated among the world’s fastest mobile networks. A 1-week Seoul trip costs USD$84 with Day Pass. The same trip with an eSIM costs around USD$6.24. Honest math + when Day Pass is the right call below.

Travelren is an eSIM brand. We sell South Korea plans, so this comparison has stakes. Here’s the honest math.

The quick answer

• AT&T International Day Pass in South Korea: USD$12/day (USD$10/day for Unlimited Premium plans), only on usage days. Routes on KT or SK Telecom.
• Travelren eSIM, 3GB / 30 days for South Korea: approximately USD$6.24
• Crossover: the eSIM is cheaper for any trip including a single day.

How AT&T actually works when you land in Seoul

South Korea has three main carriers: SK Telecom, KT (Korea Telecom), and LG U+. AT&T’s roaming partners route to KT primarily, with SK Telecom as fallback. South Korea has the world’s most advanced 5G rollout — 5G everywhere in Seoul, Busan, Incheon, Daegu, with Standalone 5G architecture in major districts. Speeds in Seoul typically pull 200-500 Mbps on 5G. Subway 5G is genuinely fast across the entire Seoul Metro network.

4G LTE everywhere else including the DMZ tour areas, Jeju Island, and rural Gangwon Province. South Korea has effectively no dead zones in tourist areas.

Day Pass detail for South Korea

• USD$12 per 24-hour usage window (USD$10 for Unlimited Premium plans)
• Talk + text + your home plan data allowance included
• Verify your specific plan’s roaming rate on myAT&T

What an eSIM costs for South Korea

Travelren South Korea plans (USD as of May 2026):

• 1GB / 7 days: approximately USD$3.12 — Seoul stopover, navigation + KakaoMaps + Naver Maps
• 3GB / 30 days: approximately USD$6.24 — sweet spot for 1-2 weeks
• 5GB / 30 days: approximately USD$7.63 — comfortable for two weeks of daily Reels and FaceTime home
• 10GB / 30 days: approximately USD$13.87 — heavy use, tethering laptops
• 20GB / 30 days: approximately USD$22.19 — peace of mind

The eSIM routes on KT and SK Telecom — same primary networks AT&T uses. Browse the full South Korea eSIM range.

Break-even math

Trip length	AT&T Day Pass	Travelren 3GB / 30 days	Cheaper option
1 day stopover (Incheon transit)	USD$12	USD$6.24	eSIM saves USD$5.76
3 days (Seoul weekend)	USD$36	USD$6.24	eSIM saves USD$29.76
1 week	USD$84	USD$6.24	eSIM saves USD$77.76
2 weeks (Seoul + Busan + Jeju)	USD$168	USD$7.63 (5GB)	eSIM saves USD$160.37
3 weeks (Korea full circuit)	USD$252	USD$13.87 (10GB)	eSIM saves USD$238.13

When AT&T International Day Pass is the right call

• Incheon stopovers under 6 hours — eSIM setup time isn’t worth the small saving
• You can’t have your US number go SMS-silent on data days — bank 2FA, doctor calls. Modern dual-SIM phones solve this; older single-SIM phones don’t
• Corporate AT&T plan with Day Pass comped
• You want zero setup — Day Pass auto-activates

Will your phone work?

Almost certainly yes. iPhone XS+, Pixel 3+, Galaxy S20+ all support eSIM. iPhone 14+ (US-sold, 2022+) are eSIM-only. AT&T-locked phones unlock automatically once paid off.

Exception: iPhones bought directly in mainland China don’t have eSIM hardware even when the model number matches a US-purchased phone. Our device check page has the full list.

Common questions

Can I buy a SIM at Incheon (ICN) or Gimpo (GMP)?

Yes — KT, SK Telecom, and LG U+ all have airport kiosks at ICN arrivals. Tourist SIMs run KRW 30,000-60,000 (USD$22-45) for 7-30 day packages. Significantly more expensive than the eSIM at USD$6.24.

Should I install KakaoTalk before going?

Yes. KakaoTalk is the dominant messaging app in South Korea — every restaurant, tour, hotel uses it. WhatsApp works for tourist-facing businesses but KakaoTalk is essential for local communication. Free. Install + verify with your US number before flying.

Does Google Maps work in South Korea?

Partially. Google Maps in South Korea has known limitations with walking directions and some bus routes due to South Korean mapping data export restrictions. Use Naver Maps or KakaoMap for transit and walking directions — both work in English and are dramatically better than Google Maps in Korea. Both work on any data connection.

Will iMessage and WhatsApp keep working?

Yes. Both tied to your Apple ID / phone number registration, not the network. Work on any data connection. Korean locals will message you on KakaoTalk; foreign friends still reach you on iMessage / WhatsApp on your US number.

The bottom line

For any South Korea trip including a single day, an eSIM is meaningfully cheaper than AT&T International Day Pass. A 1-week Seoul trip: USD$6.24 with Travelren versus USD$84 with Day Pass — USD$77 saved. South Korea has zero dead zones, world-class 5G, and a thriving local app ecosystem (KakaoTalk, Naver Maps) — all of which work on any data connection.

See the full Travelren South Korea eSIM range →

Sources

• AT&T International Day Pass
• KT Korea Telecom
• Opensignal South Korea Mobile Network Experience
• Travelren South Korea eSIM plans
• Pillar comparison: Travelren vs Airalo vs Holafly for US travelers