Japan eSIM — prepaid data from $0.51
Prepaid, data-only eSIM from $0.51 on NTT docomo, Rakuten Mobile, KDDI/au and SoftBank. Install by QR code before you fly. There is no phone number, so keep your home SIM for calls and SMS codes.
Available data plans
Select the plan that matches your travel needs.
Check device compatibility
Search for your phone or tablet model.
An eSIM cannot be linked to multiple devices. Once activated, it cannot be activated again.
How to install (before you fly)
- 1Buy a Japan plan and open the QR code from your email or the SimJuno dashboard.
- 2iPhone: Settings → Cellular → Add eSIM → scan the QR code.
- 3Android (menu names vary by brand): Settings → Network & internet → SIMs → Add eSIM → scan the QR code.
- 4When you land, turn the eSIM line on and enable data roaming for that line.
- 5Keep your primary SIM active for calls and SMS if you still need your home number.
Japan eSIM FAQ
Is a Japan eSIM better than roaming?
Usually yes for data-heavy trips: you pay a fixed prepaid amount instead of per-day or per-MB roaming from your home carrier. SimJuno Japan plans are data-only, so your home number can stay active on your physical SIM or second line for calls and SMS.
Will WhatsApp work on a Japan eSIM?
WhatsApp chats and calls work over data. WhatsApp SMS verification to a number on this eSIM will not, because the eSIM has no phone number — verify your account before you travel or keep your home SIM in the phone.
When should I install the eSIM?
Add the eSIM before you fly so you are not relying on airport Wi-Fi at Narita, Haneda or Kansai, and keep the line switched off until you land. Buying ahead is safe: on current Japan plans an unused eSIM stays valid for 180 days before activation.
Can I make calls or send SMS with this eSIM?
No. Every SimJuno Japan eSIM is data-only: there is no phone number, so no regular calls or SMS, including one-time passcodes sent by SMS. Use internet calling and messaging apps instead.
Which networks does the eSIM use in Japan?
Japan plans list NTT docomo, Rakuten Mobile, KDDI/au and SoftBank. Each plan shows its networks and speed (3G/4G/5G on most plans) in the package details, so check the plan you pick rather than assuming every network is included.
