Teltonika RUTX12 (0*****) in South Korea
The Teltonika RUTX12 (0*****) rates good on all 3 networks in South Korea (SK Telecom, KT and LG U+). 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 | ✔ Good 100% | B1 B3 B7 B5 | — |
| KT | ✔ Good 100% | B1 B3 B8 | — |
| LG U+ | ✔ Good 100% | B1 B7 B5 | — |
Better-rated models here
In South Korea it is already among the best-rated models.
About the Teltonika RUTX12 (0*****)
Industrial router · Cat 6 · Dual-modem industrial router · Europe, Middle East, Africa, Australia, APAC, Brazil, Malaysia · Teltonika1
- 4G B1 B3 B5 B7 B8 B20 B28 B38 B40 B41
The maker also lists B32 (1500 MHz), receive-only and only as a secondary carrier in aggregation, so it is not counted as a band that can carry a connection alone. Excludes Japan and China Mobile; no 2G.
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 Teltonika RUTX12 (0*****) in 46 countries →
Back to the home: ask, enter a model or bands, or compare models
Sources
- A RUTX12 supported frequency bands by product code (Teltonika Networks Wiki) Teltonika Networks · 2026-10-03
- C Permanent roaming in IoT: rules by country (2026) Thingsdata · 2026
