USR IOT USR-G771-E in South Korea
The USR IOT USR-G771-E rates good on 1 of 3 networks in South Korea (KT). On SK Telecom it is limited, missing a coverage band. On LG U+ it is limited, missing a coverage band. 3G switch-off: WCDMA licences (KT, SKT) by December 2026.
Network by network
| Network | Verdict | Bands in use it supports | Core bands missing |
|---|---|---|---|
| SK Telecom | ◐ Limited 60% | B1 B3 B7 | — |
| KT | ✔ Good 100% | B1 B3 B8 | — |
| LG U+ | ◐ Limited 50% | B1 B7 | — |
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
- Quectel EG25-G Cat 4 · global · Quectel · 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.
◐ Allowed under conditions: Allowed under certain conditions (one source so far).2
All networks and bands in South Korea → · 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
- C Permanent roaming in IoT: rules by country (2026) Thingsdata · 2026
