eSIM for Japan: Best Plans and Coverage
Japan has world-class 5G but strict rules for foreigners buying SIMs, which makes eSIM the easy path.
- Airalo Japan: 10 GB for about $18, 30 days
- Ubigi Japan: 10 GB near $15 with solid 5G
- Holafly Japan: unlimited from $19 for 5 days
- Major networks covered: NTT Docomo, SoftBank, KDDI
Install before you land, because airport pickup queues and passport checks are not worth the wait.
Airport Wi-Fi can bridge the first hour, but a pre-loaded eSIM means instant data the second you land.