Xiaomi 12S Ultra in South Korea

The phone Xiaomi 12S Ultra is compatible with the following 5G networks in South Korea:

Operator	Compatibility Score	Details
LG U+	50 %	The 12S Ultra is compatible to one 5G band of LG U+ 5G network in South Korea. However, there is still one incompatible band for this phone. 5G should work at most places, whilst the bandwidth and coverage can be limited.
KT	50 %	The 12S Ultra is compatible to one 5G band of KT 5G network in South Korea. However, there is still one incompatible band for this phone. 5G should work at most places, whilst the bandwidth and coverage can be limited.
SK Telecom	50 %	The 12S Ultra is compatible to one 5G band of SK Telecom 5G network in South Korea. However, there is still one incompatible band for this phone. 5G should work at most places, whilst the bandwidth and coverage can be limited.

Although this information has been researched with the utmost care, it is provided without any warranty.

IMPORTANT: This data is valid for the Xiaomi 12S Ultra bought in .
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Is the 12S Ultra compatible to LG U+ 5G?

The 5G network of LG U+ in South Korea is using two bands in total. From these, the 12S Ultra can use only one.
Among these frequency bands, mmWave bands are not understood by the 12S Ultra. Thus, you may never experience download speeds faster than 1 Gbps on this network, even though the LG U+ 5G network is capable of delivering even higher speeds at certain locations. The lack of mmWave bands should be no issue in usual everydays situations. However, it might turn into a problem when visiting large events in stadiums or other overcrowded areas in metropolitan cities.

Is the 12S Ultra compatible to KT 5G?

The 5G network of KT in South Korea is using two bands in total. From these, the 12S Ultra can use only one.
Among these frequency bands, mmWave bands are not understood by the 12S Ultra. Thus, you may never experience download speeds faster than 1 Gbps on this network, even though the KT 5G network is capable of delivering even higher speeds at certain locations. The lack of mmWave bands should be no issue in usual everydays situations. However, it might turn into a problem when visiting large events in stadiums or other overcrowded areas in metropolitan cities.

Is the 12S Ultra compatible to SK Telecom 5G?

The 5G network of SK Telecom in South Korea is using two bands in total. From these, the 12S Ultra can use only one.
Among these frequency bands, mmWave bands are not understood by the 12S Ultra. Thus, you may never experience download speeds faster than 1 Gbps on this network, even though the SK Telecom 5G network is capable of delivering even higher speeds at certain locations. The lack of mmWave bands should be no issue in usual everydays situations. However, it might turn into a problem when visiting large events in stadiums or other overcrowded areas in metropolitan cities.

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