Do I need an eSIM for Asia? What UK travellers actually pay to stay connected (2026)
Last updated: 16 August 2026
Short answer: yes, and the maths is brutal. UK networks charge £5 to £8 per day to use your own data in most of Asia, that is up to £112 for a two-week trip to Thailand. A local eSIM with 10 GB covers the whole holiday for less than the price of two days of roaming, and it is installed before you leave your sofa.
What do UK networks charge for roaming in Asia?
Since Brexit ended free EU roaming, the daily-pass model has spread everywhere, and Asia sits in the most expensive zones. This is what the big networks charge to use your existing plan there:
| Network | Daily pass (Asia) | Without a pass |
|---|---|---|
| EE | £5 to £7.50 a day, depending on your Roam Abroad tier | Around £7.40 per MB |
| Vodafone | £7.39 a day (Zone D, which includes Thailand) | £5 to £8 per MB |
| Three | About £7 a day, rising to £8 from April 2026 | Pay-as-you-go rates apply |
Sources: network price guides and UK roaming comparisons, August 2026, full list at the end. One megabyte, for scale, is about three minutes of Google Maps. A single Instagram story could cost you more than lunch in Bangkok.
How much does an eSIM for Asia cost instead?
Here is the honest picture, with prices checked by hand in August 2026. Every destination page carries its own comparison table with the verification date on it:
Thailand is the busiest route for British travellers this season. Airalo charges $11.00 for 10 GB and Saily $10.99. Gigapanda’s 10 GB plan is $10.90 for 30 days, and our unlimited week is $20.90, with data you can actually share to your laptop.
Bali and Indonesia: Airalo wants $21.00 for 10 GB, Saily $21.99. Gigapanda: $13.90. Same coverage, same 30 days.
Japan is a tighter race: Airalo $18.00, Saily $17.99, Gigapanda $15.90. Where we pull ahead in Japan is the unlimited plans, check the table on the destination page.
Vietnam: $13.90 against $18.00 and $17.99.
Hong Kong: $13.90 against $18.00 and $19.99.
India is the standout. For an unlimited week, Airalo charges $38.99, Holafly $39.50 and Saily $38.99. Gigapanda’s unlimited 7 days: $22.90. That is not a typo; it is our best-value plan in all of Asia.
Hopping between countries? The regional Asia eSIM covers twelve destinations on a single plan, which usually works out better than buying three separate ones.
What about the airport SIM stands?
They exist, they work, and they involve queueing at midnight after a 13-hour flight while someone photocopies your passport. Prices at Suvarnabhumi or Ngurah Rai are often fine, but you will pay with your first hour in paradise, and tourist counters love an upsell. An eSIM is installed at home, switches on when you land, and your UK number stays active for the bank’s security texts.
How do I set it up?
Three steps, honestly: buy online, scan the QR code we email you, and turn the line on when you land. It takes about five minutes. Your WhatsApp keeps working with your usual number. Full walkthrough here: how it works.
One panda-sized tip 🐼: install the eSIM before you fly, while you are still on your home Wi-Fi. Future-you, standing in the immigration queue, will be grateful.
The bottom line
Two weeks in Asia on a UK daily pass: £70 to £112. The same two weeks on a local eSIM: the price of a decent pad thai lunch. Gigapanda covers more than 165 destinations, the comparison tables on every destination page are verified by hand with the date shown, and if a rival genuinely beats us somewhere, the table says so. That is the deal.
Sources: NimbleFins fair-use roaming guide; House of Commons Library briefing CBP-8649 on the end of UK roam-like-at-home; EE, Vodafone and Three price guides; DataAbroad UK roaming comparison 2026. Competitor prices from airalo.com, esim.holafly.com and saily.com, verified between 12 and 16 August 2026.
Frequently asked questions
Can I use my UK phone plan in Thailand?
Yes, but it is expensive: £5 to £8 a day on EE, Vodafone or Three, and up to around £7.40 per MB without a pass. A local eSIM with 10 GB costs about the same as one or two days of roaming and lasts 30 days.
Is data roaming free anywhere in Asia for UK customers?
No. Asia sits outside every UK network’s inclusive roaming zone, so daily passes or per-MB rates always apply. Only some EU destinations remain inclusive, and mainly on O2.
How much data do I need for two weeks in Asia?
Around 10 GB covers maps, WhatsApp, social media and plenty of photos for most travellers. Heavy video calls or hotspot use push you towards 20 GB or an unlimited plan.
Will my WhatsApp number change with an eSIM?
No. WhatsApp stays linked to your UK number even while your data comes from the eSIM. Keep your UK SIM line active, with data switched off, for bank security texts.
