Quectel EC25-AF in Mexico
The Quectel EC25-AF rates good on 2 of 3 networks in Mexico (Telcel and AT&T). On Altán it is not usable, missing B28.
Network by network
| Network | Verdict | Bands in use it supports | Core bands missing |
|---|---|---|---|
| Telcel | ✔ Good 67% | B4 B66 | — |
| AT&T | ✔ Good 100% | B2 B4 | — |
| Altán | ✘ Not usable 0% | — | B28 |
Better-rated models here
- Quectel RM520N-GL 5G Sub-6 · global · Quectel · 3/3 Good
- Quectel EG912U-GL Cat 1 bis · global · Quectel · 3/3 Good
- SIMCom SIM7600G-H Cat 4 · global · SIMCom · 3/3 Good
About the Quectel EC25-AF
Cat 4 · North America · Quectel123
- 4G B2 B4 B5 B12 B13 B14 B66 B71
The North American version for Verizon, AT&T, T-Mobile, U.S. Cellular, Rogers and Telus; no B1, B3, B7 or B20, so not for Europe or Asia.
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.
◐ No legal ban; it depends on the operators: Permanent roaming is legally permissible (Cullen International: as in most of the Americas); whether it lasts depends on agreements between operators.4
All networks and bands in Mexico → · The Quectel EC25-AF in 46 countries →
Back to the home: ask, enter a model or bands, or compare models
Sources
- A EC25 Series LTE Standard Specification: variants and their bands, as published by Deutsche Telekom IoT Quectel · 2020
- A EC25 Series specification (bands of every variant), as published by Mouser Quectel · 2020
- C Quectel EC25-AF product listing (bands, North American carriers) everything RF · 2026-10-03
- B IoT regulation in the Americas: permanent roaming legally permissible in most countries (Brazil bans it); no SIM registration in the US and Canada Cullen International · 2026-02
