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eSIM JAPAN
Unlimited
eSIM Japan Unlimited · 5G Data
Compare & choose the best Japan eSIM plan
BestsellerUnlimited data eSIM for Japan
Get ready for your Japan trip with the Unlimited valid for 1–30 days data plan. Connect 5G / 4G via NTT Docomo and Rakuten Mobile — enough for navigation, ride-hailing, video calls, and sharing photos with family throughout your journey.
Unlimited eSIM Japan: Real specs before you buy
"Unlimited" means different things across eSIM providers. The table below shows exact details from the plan you’ll receive — including your high-speed data allowance, post-threshold speeds, and carrier — so you know exactly what you’re buying.
What can I still do in Japan after using up my 1GB high-speed data allowance?
1GB high-speed data ≈ 3.3 hours of 360p video or 0.9 hours of 720p HD video (estimated using YouTube’s recommended bitrates). Once exhausted, speeds will be reduced to 256 Kbps – 1 Mbps (depending on the number of days you select) until your daily allowance resets:
- Message WhatsApp, iMessage, Messenger
- Email and Google Maps navigation
- Voice calls via apps (may be unstable)
- Watch videos and scroll Reels/TikTok (very slow downloads)
- Video calls
- HD video streaming, large file downloads, and hotspot sharing with a laptop
The list above shows the lowest available rate (256 Kbps) to avoid surprises.
7 days in Japan: Unlimited or data package?
Using mobile data in Japan: local tips
- Signal underground. Tokyo’s subway lines carry mobile voice and data in the tunnels as well as the stations, so maps and messaging keep working between stops.
- Shinkansen Wi-Fi is limited. Free Wi-Fi on the Tokaido, Sanyo and Kyushu Shinkansen disconnects every 30 minutes and can be slow in crowded or remote sections — use mobile data for anything that needs a steady connection.
- Free Wi-Fi is fragmented. Wi-Fi sign-up varies between stations, airports and convenience stores, and some sign-up pages are in Japanese only. JNTO’s free “Japan Wi-Fi auto-connect” app registers you once for many trusted networks.
- 5G comes and goes. In the first half of 2026, phones on Japan’s four networks spent roughly 37–51% of their connected time on 5G. Expect to switch to 4G often, especially outside city centres.
- Transit card on your phone. iPhone users can add JR East’s Welcome Suica Mobile to Apple Wallet and top it up from the phone; it is valid for 180 days. It is not available on Android.
- Translate offline too. Download Japanese in Google Translate on Wi-Fi before you fly, so menus and signs can still be translated in deep tunnels or remote areas without signal.
Checked against official sources in September 2026. Services and coverage change — check the app or operator before you travel.
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FAQs about Japan eSIM
Everything you need to stay connected on your trip.
Unlimited data: your connection will never be cut off. However, high-speed data is limited to 1GB per day; once exhausted, speeds will be reduced until your daily allowance resets. Post-threshold speed in Japan: 256 Kbps – 1 Mbps (depending on the number of days you select).
Connects via NTT Docomo, Rakuten Mobile, KDDI (au), SoftBank. Your device automatically selects the strongest available local carrier — no manual selection needed. 5G is available where the local carrier has deployed it; elsewhere, 4G applies.
At 256 Kbps these still work: Message WhatsApp, iMessage, Messenger, Email and Google Maps navigation, Voice calls via apps (may be unstable). Not recommended: Watch videos and scroll Reels/TikTok (very slow downloads), Video calls, HD video streaming, large file downloads, and hotspot sharing with a laptop.
Unlimited (1GB/day high-speed data) starting at $0.92/day is enough for maps, messaging, and social media. Unlimited Plus (3GB/day) starting at $1.48/day is better if you frequently make video calls, post stories/videos, or share a hotspot with travel companions. Choose Premium starting at $1.77/day if you need all-day high-speed data without limits — ideal for remote work or sharing a hotspot with your laptop.
Yes. Note that hotspot usage counts toward your plan’s high-speed data allowance — a single laptop can quickly consume 1GB, and carriers may throttle speeds when hotspotting. For group sharing, we recommend Unlimited Plus or Premium.
The number of days starts when your eSIM first connects to mobile data at your destination — not from the purchase date. We recommend installing your eSIM before departure and only enabling it upon landing. Some plans auto-activate 30 days after purchase if unused, so buy close to your travel date.
Most iPhone XS+, Galaxy S20+, and Pixel 3+ models support eSIM. Your device must be unlocked.
No. This is a data-only plan; you’ll make calls and send messages via WhatsApp, iMessage, Messenger.
100% refund if the eSIM hasn’t been activated or if there’s a technical issue caused by us that we cannot resolve.