FP4 from launch is the relevant SKU for Japan too.

eSIM (EID on *#06#) will install a Japan profile. Suica is FeliCa. Welcome Suica Mobile is 180 days, no refund (JR East, as of March 2026). EU/US firmware generally cannot add it. Plastic card at the machine; eSIM for maps.

Dated 2026-08-29: Ubigi 10GB/7d US$14 (Docomo). Airalo 7d 5GB US$10 / unlimited 7d US$27 (3GB/24h then 1 Mbps). Holafly 7d US$27.50 (hotspot 1GB/day).

https://before-you-land.tiiny.site/japan/android/ — Airalo affiliate.

US firmware note, because this is the US launch: a Japan eSIM will install if *#06# shows an EID. Suica is FeliCa, not that radio. Welcome Suica Mobile is 180 days, no refund (JR East, as of March 2026). EU/US Fairphones generally cannot add it. Plastic card at the airport; eSIM for maps.

Dated SKUs 2026-08-29: Ubigi 10GB/7d US$14 (Docomo); Airalo 7d 5GB US$10 / unlimited 7d US$27 (3GB/24h then 1 Mbps); Holafly 7d US$27.50 (hotspot 1GB/day).

https://before-you-land.tiiny.site/japan/android/ — Airalo is an affiliate link.

Non-obvious connectivity, because you are 16 people who will split (Disneyland vs Shimokitazawa):

One pocket Wi-Fi brick is one SSID. Fine in a hotel room. Useless when half the group is in a different park. Returning it is a second airport queue.

Per-phone eSIM is the boring answer if the group splits. Checkout I copied 2026-08-29 (re-check before paying): Airalo Japan 7d 5GB $10 / 10GB $17; “unlimited” 7d $27 is FUP 3GB/24h then ~1 Mbps. Holafly 7d $27.50, hotspot 1GB/day. Ubigi 10GB/7d $14 on Docomo.

Also: eSIM is not Suica. Welcome Suica Mobile is JR East, 180 days, no refund (as of March 2026). Most US/EU Android still cannot tap. Plastic IC cards for a group of 16 are simpler than hoping Wallet works.

Dated notes: https://before-you-land.tiiny.site/japan/pocket-wifi/

Disclosure: Airalo links there may earn a commission. Holafly/Ubigi are official/untracked on that page. I did not invent the SKUs.