How Much Data Do I Need in Japan?
eSIM from 1,00 USD · 100 MB. Networks: KDDI/au (5G), NTT docomo (4G), NTT docomo (5G), Rakuten Mobile (5G), SoftBank (5G).
Real data usage while travelling
These figures are approximate but based on real-world app measurements. Your usage may vary with signal quality and content loaded.
| Activity | Usage / hour | Example daily use |
|---|---|---|
| WhatsApp (text + photos) | ~30 MB | 2 hrs = 60 MB |
| Google Maps (navigation) | ~5–10 MB | 1 hr = 10 MB |
| Instagram / TikTok (scroll) | ~200–400 MB | 1 hr = 300 MB |
| YouTube (720p) | ~1 GB | 30 min = 500 MB |
| Spotify (streaming) | ~70 MB | 2 hrs = 140 MB |
| Video call (Zoom / Meet) | ~800 MB – 1.5 GB | 30 min = 500 MB |
| Uber / ride-hailing (per trip) | ~10–15 MB / trip | 3 trips = 40 MB |
Typical scenarios for visiting Japan
- Light traveller (maps, WhatsApp, photos): ~300–500 MB/day → 3–5 GB plan for a week.
- Average use (social media, some video, transport): ~1 GB/day → 7–10 GB plan for a week.
- Heavy use (streaming, video calls, hotspot): ~2–3 GB/day → 15+ GB or unlimited plan.
Tip: download maps, podcasts and playlists on hotel Wi-Fi. This can cut your mobile data usage in half.
Quick checklist: stay online without surprises
The make-or-break moment is often the first 30 minutes after landing: maps, transport, messages. Install your eSIM on Wi‑Fi before you travel and switch mobile data to the eSIM when you arrive. That way you're not dependent on airport Wi‑Fi and you avoid accidental roaming charges.
For typical use (maps + messaging + light social media), 1–3 GB per week is often enough. If you tether for a laptop, take video calls, or stream daily, aim for 10 GB+ or a plan with fair-use throttling instead of a hard cut-off.
- Networks: KDDI/au (5G), NTT docomo (4G), NTT docomo (5G), Rakuten Mobile (5G), SoftBank (5G)
- Offline maps: download the area in Google Maps, Apple Maps, Yahoo! Japan Maps while you're on hotel Wi‑Fi.
- On the move: GO (taxi), S.RIDE, DiDi Japan + LINE, WhatsApp work well on low data — video and app updates are usually the real data drains.
- Common weak spots: Deep mountain areas (Nikko and Hakone lake districts) · Remote islands (Yakushima, Iriomote in Okinawa)
- City context: Tokyo: Excellent coverage; Metro LTE on most lines; dense buildings can blip indoors. · Osaka: Strong 4G/5G; Dotonbori and Namba districts well-covered.
Phone setup tip: keep your primary SIM active for calls/SMS (so 2FA codes can arrive), but turn off mobile data on that line. Set the eSIM as your data line — it prevents accidental roaming on the wrong SIM and keeps WhatsApp/banking flows more predictable.
Current eSIM plans (examples)
Japan 500MB/Day (IIJ)
500 MB · 1 días · 1,50 USD
Japan 100MB 7Days
100 MB · 7 días · 1,00 USD
Japan 3GB 15Days
3 GB · 15 días · 3,00 USD
Japan 3GB 30Days (IIJ)
3 GB · 30 días · 3,00 USD
Examples from our database — availability and pricing can change.