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):

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