Japan Piani eSIM
Why LTE.app
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Always-Reachable Rescue
Smart Coach and Offline Pack keep you connected even with zero data balance.
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Privacy-First
No tracking, no selling your data. Your travel stays private.
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Instant Delivery
QR code in seconds. Activate before your flight. No physical SIM.
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Smart Coach
AI travel assistant
Ask Smart Coach about the best eSIM plans for Japan, compare carriers, get installation help, and more.
Can I use an eSIM in Japan?
Yes. LTE.app eSIMs work in Japan on compatible eSIM devices including most iPhones (XS and later) and many Android phones released after 2018. Check our device compatibility page for the full list.
When does my Japan eSIM activate?
Your eSIM activates when you first connect to a local network in Japan. You can install it at home over Wi-Fi before you travel — the data countdown only starts when your phone connects to a Japan carrier after you arrive.
Can I use mobile hotspot (tethering) in Japan?
Yes. Most LTE.app plans for Japan support mobile hotspot, so you can share your data connection with a laptop or travel companion. Hotspot availability is shown on each plan card.
Can I use my regular SIM and the Japan eSIM at the same time?
Yes, if your phone supports dual SIM. You can keep your home SIM active for calls and texts while the Japan eSIM handles data. Most modern iPhones (XS and later) and Android flagships support this — check your phone's specs to confirm.