Hotel Wi-Fi in Tokyo is not a data plan. Maps on the Yamanote and in stations still need a phone line.

Copied 2026-08-29 (expire when checkout changes):

• Ubigi 10GB/7 days US$14, NTT Docomo. 7-day unlimited SKU URL was 404 that day.
• Airalo Japan 7-day 5GB US$10, 10GB US$17, unlimited 7-day US$27 (3GB/24h then 1 Mbps).
• Holafly Japan 7-day US$27.50; hotspot 1GB/day.

Install on home Wi-Fi the night before Narita/HND. Airport Wi-Fi is a login portal.

eSIM is maps. Suica is FeliCa. Most overseas Android still cannot add Welcome Suica Mobile.

https://before-you-land.tiiny.site/japan/7-days/ — Airalo affiliate; Holafly and Ubigi official.