eSIM for Thailand, Vietnam and Cambodia: one regional plan, or one per country?

A trip through Thailand, Vietnam and Cambodia is exactly the case where the answer is not obvious: one regional plan buys days and data once, while separate country plans can be cheaper for short or uneven stays. Below is the live comparison for 7 days and 5 GB in each country. Change the numbers to match your own route.

Add each country you are visiting with how long you will stay and how much data you want there. We check every plan we sell and mark the cheaper setup for your exact route.

Country Days GB

Only show plans I can top up Narrows the results to plans you can extend if you run low. Most of our plans allow top-ups, but not all, so use this if you think you may go over your allowance.

Up to 10 countries. Different days and data per country are fine.

Thailand 7 days · 5 GB

Vietnam 7 days · 5 GB

Cambodia 7 days · 5 GB

Option A One regional eSIM

Vietnamobile Asia · 20 GB shared · valid 30 days · covers 7 countries · Top-ups	£26.15
Total	£26.15

£1.24 / trip day £1.74 / trip GB

Plan: £0.87/day · £1.31/GB

Cheaper for this trip

Option B 3 country eSIMs

Thailand DTAC · 5 GB · valid 30 days · Top-ups	£3.73
Vietnam Vinaphone · 5 GB · valid 30 days · Top-ups	£5.12
Cambodia Cellcard · 5 GB · valid 30 days · Top-ups	£5.41
Total	£14.26

£0.68 / trip day £0.95 / trip GB

The country bundle saves £11.89 on this trip. Worth knowing: the regional plan's data is one shared pool, while these are hard per-country caps. If your usage is hard to predict, that flexibility can be worth the difference.

Prices are what you would pay at checkout right now, including any discount you qualify for. Link to this comparison

Regional data is one shared pool across every country on your route; country plans are hard per-country caps. The comparison says which is cheaper for your numbers, and points out the flexibility trade-off when it matters. How this comparison works