Best eSIM for Japan – Full-Speed KDDI, IIJ & Non-HK Options
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Japan is Shibuya crossing live-streams, Hokkaido powder-day uploads, and still having perfect signal when you’re lost in a Kyoto bamboo forest at night.
Ugoroam Japan eSIM keeps you connected from the moment you land at Haneda or Kansai — one plan, entire country, no drama.
How Ugoroam Makes Japan Easier
- One eSIM, entire country Tokyo → Kyoto → Osaka → Sapporo → Okinawa — same plan, no swapping.
- Online before you clear customs Activate over plane Wi-Fi. Full 5G hits the second you step off at Narita, Itami, or New Chitose.
- Three network options for every need
- KDDI/au + SoftBank 5G: fastest nationwide blanket
- IIJ version: cheapest, perfect for most travellers
- Non-HK IP version: zero restrictions for users from mainland China
- Top-up anytime, anywhere Extending cherry-blossom season in Kyoto or adding a ski week in Niseko? Add more data in seconds, no new QR.
- Unlimited hotspot for the whole squad One phone powers the entire JR Pass group, the onsen hotel, Tokyo Airbnb, or Hokkaido rental car.
Ugoroam Japan Plans – Pick Your Vibe
| Trip Style | Recommended Data | Perfect For |
|---|---|---|
| Weekend Tokyo blast | 500 MB–1 GB total | Shibuya, Akihabara, day trips |
| Classic 7-day cherry blossom | 1–3 GB total | Tokyo + Kyoto/Osaka, daily stories |
| 2-week JR Pass adventure | 5–10 GB total | Full Golden Route + hotspot on every train |
| 3–4 week deep explorer | 10–20 GB total | Tokyo base + weekend snow trips or Okinawa |
| Month-long creator / nomad | 20–50 GB total | 4K vlogs, live streams, multi-device hotspot |
| 6-month snow season / work | 50 GB (180 days) | Long-term van life or digital nomad winter |
All plans:
- 180-day pre-activation window
- Full speed on KDDI/au, SoftBank, or IIJ networks
- Unlimited hotspot
- Instant top-up available
- Data-only (LINE, WhatsApp, iMessage work perfectly)
Connect in 3 Stupid-Simple Steps
- Before you fly → ugoroam.com → Japan → choose your network & data → pay
- QR code arrives instantly → save it
- Land in Japan → Settings → Cellular → Add eSIM → scan → turn on Data Roaming
Works on iPhone XS+, Samsung S20+, Pixel 3+ and newer. → Check compatibility here
Ready for Japan that never drops a bar?
Start here → Best Ugoroam eSIM for Japan
Drop your Japan dates below — we’ll tell you the perfect plan + network option in seconds.
Want 10 GB fresh high-speed every day in Japan?
→ See Japan Unlimited: 10 GB/day daily reset + truly unlimited hotspot