Two things matter: the phone must support eSIM, and it must be carrier-unlocked. Check yours below — no sign-up, no app.
Pick your brand and model, or type the exact name.
Dual eSIM, 5G on both lines, hotspot supported. Works with every RoamiData plan — Japan included.
If an EID number appears, the phone has an eSIM chip.
iPhone: About. Android: About phone → SIM status.
Use a physical travel SIM instead — or a newer phone.
Support answers compatibility questions in about two minutes, 24/7 — even before you buy.