Teltonika RUTX12 (1*****) in Japan
The Teltonika RUTX12 (1*****) rates good on 0 of 4 networks in Japan. On NTT docomo it is limited, missing a coverage band. On KDDI (au) it is limited, missing a coverage band. On SoftBank it is not usable, 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 25% | — | — |
| KDDI (au) | ◐ Limited 36% | B26 | — |
| SoftBank | ✘ Not usable 0% | — | — |
| Rakuten Mobile | ◐ Limited 57% | B26 | — |
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 Teltonika RUTX12 (1*****)
Industrial router · Cat 6 · Dual-modem industrial router · North America · Teltonika1
- 4G B2 B4 B5 B7 B12 B13 B25 B26 B30 B66
The maker also lists B29 (700 MHz), receive-only and only as a secondary carrier, so it is not counted. No B71 (T-Mobile 600 MHz); no 2G.
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).2
All networks and bands in Japan → · The Teltonika RUTX12 (1*****) in 46 countries →
Back to the home: ask, enter a model or bands, or compare models
Sources
- A RUTX12 supported frequency bands by product code (Teltonika Networks Wiki) Teltonika Networks · 2026-10-03
- C Permanent roaming in IoT: rules by country (2026) Thingsdata · 2026
