Why get an eSIM for Japan?
An AeroCell eSIM for Japan gets you online the moment you land—no SIM swap, roaming charges, or kiosk queue. Choose from 10 prepaid data plans starting at $1.49. It connects to NTT docomo 5G, giving you the same coverage locals use.
Buy before you fly and install from the AeroCell app or the QR code emailed after checkout. The plan activates when it first connects in Japan, while your regular SIM stays available for calls and texts.
Japan eSIM—frequently asked questions
Which networks does the Japan eSIM use?
AeroCell eSIMs for Japan connect to NTT docomo 5G, providing the same coverage as a local SIM.
How much does an eSIM for Japan cost?
Plans start at $1.49. All plans are prepaid, with no surprise charges.
When should I install and activate it?
Install over Wi-Fi before you travel. Validity starts only when the eSIM first connects to a network in Japan, so installing early costs nothing.
Can I share data with other devices?
Yes. You can tether your laptop or share data with travel companions, subject to the plan's data allowance.
Do I keep my phone number and WhatsApp?
Yes. Your physical SIM stays active for calls and texts, and WhatsApp continues using your existing number. The eSIM supplies data only.
Guides for your trip
- Best eSIM for Japan (2026): Prices, docomo Coverage & Tips
- How to Install an eSIM: One-Tap, QR Code & Manual (2026 Guide)
- Does My Phone Support eSIM? The 60-Second Check (2026)