SIMCom A7670E in China
The SIMCom A7670E rates good on 2 of 4 networks in China (China Telecom and China Unicom). On China Mobile it is limited, missing B34 B38 B39 B40. On China Broadnet it is not usable, missing a coverage band.
Network by network
| Network | Verdict | Bands in use it supports | Core bands missing |
|---|---|---|---|
| China Mobile | ◐ Limited 43% | B3 B8 | B34 B38 B39 B40 |
| China Telecom | ✔ Good 67% | B1 B3 B5 | — |
| China Unicom | ✔ Good 67% | B1 B3 B8 | — |
| China Broadnet | ✘ Not usable 0% | — | — |
Better-rated models here
- Quectel RM520N-GL 5G Sub-6 · global · Quectel · 4/4 Good
- Quectel EG912U-GL Cat 1 bis · global · Quectel · 4/4 Good
- SIMCom SIM7600G-H Cat 4 · global · SIMCom · 4/4 Good
About the SIMCom A7670E
Cat 1 · EMEA and parts of Asia · SIMCom12
- 4G B1 B3 B5 B7 B8 B20
The A7670E has no B28 and no Americas bands; where they are needed, choose the A7670SA from the same family (B1/2/3/4/5/7/8/28/66).
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.
⚠ Long-term roaming by foreign SIMs is not allowed: Long-term use of foreign SIMs is not allowed; a domestic operator’s SIM is required.345
All networks and bands in China → · The SIMCom A7670E in 46 countries →
Back to the home: ask, enter a model or bands, or compare models
Sources
- A A7670 series specification: A7670C, A7670E and A7670SA bands, as published by Texim Europe SIMCom · 2026-10-02
- C SIMCom A7670E product listing (bands) everything RF · 2026-10-02
- B Navigating permanent roaming for IoT: where it is prohibited and where operators restrict it Counterpoint Research · 2026-10-02
- C What is permanent roaming: countries where it is banned or effectively prohibited Eseye · 2026-10-02
- C Navigating permanent roaming challenges for IoT deployments Com4 · 2026-10-02
