USR IOT USR-G771-E in Mexico
The USR IOT USR-G771-E rates good on 1 of 3 networks in Mexico (Altán). On Telcel it is limited, missing B4. On AT&T it is limited, missing B2 B4.
Network by network
| Network | Verdict | Bands in use it supports | Core bands missing |
|---|---|---|---|
| Telcel | ◐ Limited 33% | B7 | B4 |
| AT&T | ◐ Limited 0% | — | B2 B4 |
| Altán | ✔ Good 100% | 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 USR IOT USR-G771-E
DTU · Cat 1 · RS232/RS485 DTU · Europe · USR IOT1
- 4G B1 B3 B7 B8 B20 B28
LTE Cat 1 for the mainstream European bands, with 2G fallback; no B5, so not for the Americas. The Chinese USR-G771 has different bands; do not mix them up.
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.2
All networks and bands in Mexico → · The USR IOT USR-G771-E in 46 countries →
Back to the home: ask, enter a model or bands, or compare models
Sources
- C USR-G771-E listing (bands, links to the maker’s datasheet) Gotronik · 2025-04-19
- 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
