ahamo roaming prices by destination
Choose a destination to see the cheapest official way to get about 5 GB for a week with ahamo, next to a travel eSIM for the same week.
Compare for your trip
South Korea: about 5 GB for a week
South Korea is in ahamo 海外データ通信.
- ahamo, about 5 GB for 7 days
- Included in some plans
- eSIM For U, 5 GB for 30 days
- $9.49
- eSIM For U daily plan, 7 days
- $10.69 · 1 GB per day
| ahamo · 7 days | eSIM For U | |
|---|---|---|
 South Korea | Included in some plans | $9.49eSIM For U, 5 GB for 30 days |
 USA | Included in some plans | $9.49eSIM For U, 5 GB for 30 days |
 Thailand | Included in some plans | $7.09eSIM For U, 5 GB for 30 days |
 China | Included in some plans | $13.29eSIM For U, 5 GB for 30 days |
 Vietnam | Included in some plans | $9.49eSIM For U, 5 GB for 30 days |
Official price list of ahamo, checked 3 Nov 2026. Standard plans; older contracts may differ. Source Prices in different currencies, not converted.
All ahamo data options
| Data | Valid | Price | |
|---|---|---|---|
| 海外データ通信ahamo 海外データ通信 | 30 GB | Included in plan |
Where ahamo roaming is included
ahamo lists ahamo 海外データ通信 as included in some plans, with up to 30 GB of data. Whether yours is one of them depends on your plan: the ahamo app or your contract summary shows it.
Keep your ahamo number, use eSIM data
- Install the travel eSIM at home
Buy and install it over Wi‑Fi before you leave. Your ahamo SIM stays in the phone. See how to install on iPhone or on Android.
- Use the eSIM for mobile data
In your phone settings, choose the travel eSIM as the line for mobile data. Calls and texts can stay on your ahamo number.
A travel eSIM for South Korea
South Korea is the destination travellers from Japan search most often with a travel eSIM. These are live prices for it, to set against the ahamo options above.
Prefer a daily allowance? 1 GB per day · 7 days for $10.69: full speed up to 1 GB a day, then 512 Kbps until the next day.
Picked like in our shop: the cheapest plan with about 0.7 GB a day. Live prices for South Korea.
Questions and answers
Is roaming included with ahamo?
In some plans: ahamo lists ahamo 海外データ通信 as included. Outside that, the options in the table apply.
Can I use a travel eSIM with my ahamo number?
Yes. Keep your ahamo SIM for calls and texts and use the travel eSIM for data. Your phone needs to support eSIM and be unlocked.
Do I pay ahamo anything when I use a travel eSIM?
Not for data, as long as data roaming is off on your ahamo line. Calls and texts on your ahamo number are charged as in its price list.
What if I forget to turn off roaming on ahamo?
Then your ahamo SIM can use data abroad at the ahamo rates for that destination. Turn off data roaming for that line before you land.
Updated 3 Nov 2026 · checked against our live catalogue
How we check our data · Prices and plans come live from our catalogue; facts come from official sources, listed where we use them.
