Quectel BG770A-GL in China
The Quectel BG770A-GL rates good on 3 of 4 networks in China (China Mobile, China Telecom and China Unicom). On China Broadnet it is unconfirmed, missing a coverage band.
Network by network
| Network | Verdict | Bands in use it supports | Core bands missing |
|---|---|---|---|
| China Mobile | ✔ Good 43% | B3 B8 | B34 B38 B39 B40 |
| China Telecom | ✔ Good 67% | B1 B3 B5 | — |
| China Unicom | ✔ Good 67% | B1 B3 B8 | — |
| China Broadnet | ? To be confirmed 100% | B28 | — |
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 Quectel BG770A-GL
LTE-M / NB-IoT · global · Quectel12
- 4G B1 B2 B3 B4 B5 B8 B12 B13 B17 B18 B19 B20 B25 B26 B27 B28 B66
- LTE-M and NB-IoT assessed together
LTE-M and NB-IoT are assessed together: B26 and B27 are LTE-M only, B17 is NB-IoT only.
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 Quectel BG770A-GL in 46 countries →
Back to the home: ask, enter a model or bands, or compare models
Sources
- A BG770A-GL LPWA Specification (Cat M1 and NB1/NB2 bands) Quectel · 2026-10-06
- C Quectel BG77xA-GL product listing (Cat M1 and NB bands) everything RF · 2026-10-06
- 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
