Thailand and Japan are two of the most common Asia trips, and each rewards a different choice. Here is how the options compare, using the plans we actually sell.
Thailand: short trips favour an eSIM
Our Thailand plans run on TrueMove H and DTAC. 1GB for 7 days costs $2.50, and 3GB for 15 days costs $4.50. Home-network roaming is often priced per day or per megabyte, so a week of maps and messaging on roaming can cost more than a whole month on an eSIM.
Japan: pick the size that matches your days
Our Japan plans use NTT docomo, Rakuten Mobile or KDDI/au, depending on the plan. 3GB for 30 days costs $4.50, 5GB for 30 days costs $7.00, 10GB for 30 days costs $12.00, and 50GB for 30 days costs $37.50. A city trip with daily maps and photo uploads usually sits between 5GB and 10GB. Plan sizes are fixed, so check the gigabytes and days together before you buy.
When roaming still makes sense
If your home plan already includes Thailand or Japan in a bundle you are happy with, a few days of roaming can be the simplest option, with nothing to install. Check your carrier's current terms before you travel, because roaming rules change.
Keep your home number on
Whichever you choose, keep your home number on your phone for calls and messages. When the eSIM carries your data, switch data roaming off on your home SIM so that only one line bills you for data.
Quick answers
Is an eSIM cheaper than roaming in Japan?
It depends on your home plan. Our plans start at $2.50 for 1GB for 7 days in both countries. Compare that with your carrier's day pass or data add-on before you travel.
Does one eSIM work in both Thailand and Japan?
No. Our Thailand and Japan plans are single-country, so buy one for each and install both before you fly.
Can I make calls in Japan on the eSIM?
Our plans are data-only. Calls stay on your home number, so check your carrier's international call rates.
New to eSIM? Read the installation guide and check your phone on the compatibility page.