USR IOT USR-DR154-E in Japan
The USR IOT USR-DR154-E rates good on 2 of 4 networks in Japan (NTT docomo and SoftBank). 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 | ✔ Good 75% | B1 B3 B28 | — |
| KDDI (au) | ◐ Limited 45% | B1 B3 B28 | — |
| SoftBank | ✔ Good 100% | B1 B3 B8 | — |
| Rakuten Mobile | ◐ Limited 57% | B3 B28 | — |
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 USR IOT USR-DR154-E
DTU · Cat 1 · Lipstick-size RS485 DTU · international version · USR IOT12
- 4G B1 B3 B5 B7 B8 B20 B28
LTE Cat 1, tiny and DIN-rail mountable; the Chinese USR-DR154 has only B1, B3, B5 and B8, so pick the -E version for deployments abroad.
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 USR IOT USR-DR154-E in 46 countries →
Back to the home: ask, enter a model or bands, or compare models
Sources
- A USR-DR154 series datasheet: bands of the -E and Chinese versions USR IOT (PUSR) · 2025
- C USR-DR154-E: 4G LTE Cat 1 modem with European bands SOS electronic · 2026-10-03
- C Permanent roaming in IoT: rules by country (2026) Thingsdata · 2026
