Billion Connect 30 GB for 30 days
Speed and data rules
Full speed
30 GB
For the whole 30-day plan
After that
256 kbps
Messages, maps and slow web pages, no videoFor the rest of the plan
Billion Connect: “your connection speed will be reduced for the remainder of the day.” Source
Billion Connect coverage
Runs on
NTT Docomo
Search by Photon, © OpenStreetMap contributors, and GSI Japan
Billion Connect 4G coverage
From Docomo's own map. Blank: not covered.
| Area | Places covered on its map |
|---|---|
| All over Japan | 129 of 129 places |
| Tokyo | 14 of 14 places |
| Osaka and Kyoto | 12 of 12 places |
| Mt Fuji and Hakone | 10 of 10 places |
| Japanese AlpsHakuba, Kamikochi, Takayama | 11 of 11 places |
| HokkaidoSapporo, Niseko | 12 of 12 places |
| Okinawa | 10 of 10 places |
| Hiroshima and Miyajima | 9 of 9 places |
| Kyushu | 15 of 15 places |
| Shikoku | 14 of 14 places |
| Rural and mountain areasOnsen towns, trails, national parks | 28 of 28 places |
Coverage areas from the service area maps published by NTT docomo, KDDI au, SoftBank and Rakuten Mobile. Changes: maps and cell positions converted to hexagons by network.
Source: NTT docomo service area map; KDDI au service area map; Rakuten Mobile service area map; SoftBank service area map; nPerf coverage map; OpenCelliD via Source Cooperative, CC BY-SA 4.0.
What you get
- Data
- 30 GB
- Valid for
- 30 days
- Network
- Docomo
- Fastest signal
- 5G
- Japanese number
- No, data only
- Texts (SMS)
- No
- Top-up
- Yes
How it works
- Starts
- Starts when the eSIM first connects at your destination and runs without pause. Days count by calendar day or 24-hour period, depending on the plan.
- Install
- QR code, App
- App
- Yes
- Support
- AI chat, Live chat (24/7, in the app)
Other Billion Connect plans for 30 days
- 15 GB for 30 daysSoftBank$10.60
- 20 GB for 30 days$12.50
- 1 GB a day for 30 daysSoftBank$16.33
- 20 GB for 30 daysDocomo and SoftBank$17.50
Price checked on esimdb.com.
$17.00
30-day trip, $0.57 a day, $0.57/GB