Quectel EC25-MX in China
The Quectel EC25-MX rates good on 1 of 4 networks in China (China Broadnet). On China Mobile it is not usable, missing B34 B38 B39 B40. On China Telecom it is limited, missing a coverage band. On China Unicom it is not usable, missing a coverage band.
Network by network
| Network | Verdict | Bands in use it supports | Core bands missing |
|---|---|---|---|
| China Mobile | ✘ Not usable 0% | — | B34 B38 B39 B40 |
| China Telecom | ◐ Limited 33% | B5 | — |
| China Unicom | ✘ Not usable 0% | — | — |
| China Broadnet | ✔ Good 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 EC25-MX
- 4G B2 B4 B5 B7 B28 B66
Designed for Mexico: B4, B7 and B66 for Telcel, and B28, the only band Altán uses.
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 EC25-MX in 46 countries →
Back to the home: ask, enter a model or bands, or compare models
Sources
- A EC25 variants and their bands, as published by Deutsche Telekom IoT Quectel · 2021
- A EC25 Series specification (bands of every variant), as published by Mouser Quectel · 2020
- 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
