Quectel EC25-E in Japan
The Quectel EC25-E rates good on 1 of 4 networks in Japan (SoftBank). On NTT docomo it is limited, missing a coverage band. On KDDI (au) it is limited, missing a coverage band. On Rakuten Mobile it is limited, missing a coverage band.
Network by network
| Network | Verdict | Bands in use it supports | Core bands missing |
|---|---|---|---|
| NTT docomo | ◐ Limited 50% | B1 B3 | — |
| KDDI (au) | ◐ Limited 36% | B1 B3 B41 | — |
| SoftBank | ✔ Good 100% | B1 B3 B8 | — |
| Rakuten Mobile | ◐ Limited 29% | B3 | — |
Better-rated models here
- Quectel RM520N-GL 5G Sub-6 · global · Quectel · 4/4 Good
- Quectel RG255C-GL 5G RedCap · global · Quectel · 4/4 Good
- Quectel EG912U-GL Cat 1 bis · global · Quectel · 4/4 Good
About the Quectel EC25-E
- 4G B1 B3 B5 B7 B8 B20 B38 B40 B41
The EC25-E has no B28; where B28 is needed (Australia, New Zealand, Israel and others), choose the EC25-EU or EC25-EUX from the same family.
Network access: long-term roaming
Many globally deployed IoT devices use multi-network roaming SIMs that can attach to several networks in a country, but some countries restrict long-term roaming by foreign SIMs. A local SIM roaming domestically is not affected.
◐ Allowed under conditions: Allowed under certain conditions (one source so far).3
All networks and bands in Japan → · The Quectel EC25-E in 46 countries →
Back to the home: ask, enter a model or bands, or compare models
Sources
- A EC25 Series LTE Standard Specification: variants and their bands, as published by Deutsche Telekom IoT Quectel · 2020
- C Quectel EC25-E product listing (bands) everything RF · 2026-10-02
- C Permanent roaming in IoT: rules by country (2026) Thingsdata · 2026
