Why eSIM beats physical SIM in Japan
No queueing at Narita/Haneda counters (save 15-30 min), no lost SIM card, install 5 minutes from the email QR. Works the moment you land.
2026-04-12 · Guide
日本eSIM 2026 — 旅行者向け完全ガイド
人気5プラン・iPhone/Android設定・空港アクティベート・対応エリア・トラブル対応まで完全ガイド。
Which plan for which trip
Short (5-day) unlimited at $11 is the sweet spot for most travelers. 8-day 5G at $25 for power users. 30-day 1GB/day at $30 for students and long stays.
Install before flying
Install QR on device at home, but keep data roaming OFF until you land. Activates automatically the moment roaming is toggled on in Japan.
Coverage map — 47 prefectures
NTT Docomo primary, Softbank and au backup. 99% population coverage. Weak spots: deep mountain forests (Kumano Kodo middle sections), small islands.
When to pick Pocket WiFi instead
Groups of 3+, family trips, need to share data across many devices including laptops. Pocket WiFi wins on per-person cost for 3+ users.
📱 eSIMプランを見る →
QRスキャン5分設定・24時間前まで無料キャンセル・Zalo/LINE 16時間サポート
