Xiaomi 12S Ultra in United States of America

The phone Xiaomi 12S Ultra is compatible with the following 5G networks in United States of America:

Operator	Compatibility Score	Details
AT&T	42 %	The 12S Ultra is compatible to three 5G bands of AT&T 5G network in United States of America. However, there are still four incompatible bands for this phone. 5G should work at most places, whilst the bandwidth and coverage can be limited.
C Spire	40 %	The 12S Ultra is compatible to two 5G bands of C Spire 5G network in United States of America. However, there are still three incompatible bands for this phone. 5G should work at most places, whilst the bandwidth and coverage can be limited.
Cellcom	40 %	The 12S Ultra is compatible to two 5G bands of Cellcom 5G network in United States of America. However, there are still three incompatible bands for this phone. 5G should work at most places, whilst the bandwidth and coverage can be limited.
Dish	10 %	The 12S Ultra is compatible to one 5G band of Dish 5G network in United States of America. However, there are still nine incompatible bands for this phone. 5G may not work everywhere as expected.
GCI	0 %	The 12S Ultra cannot use the GCI 5G network in United States of America. You may need a different phone to use this network or need to buy it in another country.
NexTech	0 %	The 12S Ultra cannot use the NexTech 5G network in United States of America. You may need a different phone to use this network or need to buy it in another country.
T-Mobile	28 %	The 12S Ultra is compatible to two 5G bands of T-Mobile 5G network in United States of America. However, there are still five incompatible bands for this phone. 5G may not work everywhere as expected.
US Cellular	20 %	The 12S Ultra is compatible to one 5G band of US Cellular 5G network in United States of America. However, there are still four incompatible bands for this phone. 5G may not work everywhere as expected.
Verizon	50 %	The 12S Ultra is compatible to three 5G bands of Verizon 5G network in United States of America. However, there are still three incompatible bands 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 .
If you bought the phone in a different country, please change it in the dropdown-menu.

Is the 12S Ultra compatible to AT&T 5G?

The 5G network of AT&T in United States of America is using seven bands in total. From these, the 12S Ultra can use only three.
Among these frequency bands, the frequency bands offering higher speeds indoor are not compatible with the 12S Ultra.
Lastly, 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 AT&T 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 C Spire 5G?

The 5G network of C Spire in United States of America is using five bands in total. From these, the 12S Ultra can use only two.
Of considerable importance is thereby the incompatibility with the sub-GHz frequencies n12, n71. Sub-GHz frequencies are radio waves with physical properties that provide high area coverage and good indoor propagation of 5G. Thus, since the 12S Ultra cannot use these frequencies on the C Spire 5G network, you should expect significantly worse 5G coverage, especially in rural areas and inside of buildings.
Lastly, 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 C Spire 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.

In addition to these significant flaws, the phone is missing other frequencies, which may not have much, if any, impact on the 5G experience: There are missing a few frequencies offering good indoor coverage with high download speeds and high download speeds in larger cities. Since your phone is supporting some of those, this will probably never be an issue.

Is the 12S Ultra compatible to Cellcom 5G?

The 5G network of Cellcom in United States of America is using five bands in total. From these, the 12S Ultra can use only two.
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 Cellcom 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.

In addition to these significant flaws, the phone is missing other frequencies, which may not have much, if any, impact on the 5G experience: There are missing a few frequencies offering high coverage in rural areas, good indoor coverage with high download speeds and high download speeds in larger cities. Since your phone is supporting some of those, this will probably never be an issue.

At most locations, you might not notice any of these effects.

Is the 12S Ultra compatible to Dish 5G?

The 5G network of Dish in United States of America is using ten bands in total. From these, the 12S Ultra can use only one.
Of considerable importance is thereby the incompatibility with the sub-GHz frequencies n71, n29, n29, n29, n29. Sub-GHz frequencies are radio waves with physical properties that provide high area coverage and good indoor propagation of 5G. Thus, since the 12S Ultra cannot use these frequencies on the Dish 5G network, you should expect significantly worse 5G coverage, especially in rural areas and inside of buildings.
What is more, the frequency bands offering higher speeds indoor are not compatible with the 12S Ultra.
Lastly, 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 Dish 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.

In addition to these significant flaws, the phone is missing other frequencies, which may not have much, if any, impact on the 5G experience: There are missing a few frequencies offering high download speeds in larger cities. Since your phone is supporting some of those, this will probably never be an issue.

Is the 12S Ultra compatible to GCI 5G?

The 5G network of GCI in United States of America is using four bands in total. From these, the 12S Ultra can use none of them.
Thus, the phone is not compatible to the GCI 5G network! Since some phone manufacturer offer different phone versions for different market areas, you might be able to use the 12S Ultra on this network, if bought in a different country. To check, please change the country in the drop-down menu on the top of this page.

Is the 12S Ultra compatible to NexTech 5G?

The 5G network of NexTech in United States of America is using one band in total. From this, the 12S Ultra can use none of them.
Thus, the phone is not compatible to the NexTech 5G network! Since some phone manufacturer offer different phone versions for different market areas, you might be able to use the 12S Ultra on this network, if bought in a different country. To check, please change the country in the drop-down menu on the top of this page.

Is the 12S Ultra compatible to T-Mobile 5G?

The 5G network of T-Mobile in United States of America is using seven bands in total. From these, the 12S Ultra can use only two.
Of considerable importance is thereby the incompatibility with the sub-GHz frequencies n71, n71. Sub-GHz frequencies are radio waves with physical properties that provide high area coverage and good indoor propagation of 5G. Thus, since the 12S Ultra cannot use these frequencies on the T-Mobile 5G network, you should expect significantly worse 5G coverage, especially in rural areas and inside of buildings.
Lastly, 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 T-Mobile 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.

In addition to these significant flaws, the phone is missing other frequencies, which may not have much, if any, impact on the 5G experience: There are missing a few frequencies offering good indoor coverage with high download speeds and high download speeds in larger cities. Since your phone is supporting some of those, this will probably never be an issue.

Is the 12S Ultra compatible to US Cellular 5G?

The 5G network of US Cellular in United States of America is using five bands in total. From these, the 12S Ultra can use only one.
Of considerable importance is thereby the incompatibility with the sub-GHz frequencies n71, n71. Sub-GHz frequencies are radio waves with physical properties that provide high area coverage and good indoor propagation of 5G. Thus, since the 12S Ultra cannot use these frequencies on the US Cellular 5G network, you should expect significantly worse 5G coverage, especially in rural areas and inside of buildings.
Lastly, 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 US Cellular 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.

In addition to these significant flaws, the phone is missing other frequencies, which may not have much, if any, impact on the 5G experience: There are missing a few frequencies offering good indoor coverage with high download speeds and high download speeds in larger cities. Since your phone is supporting some of those, this will probably never be an issue.

Is the 12S Ultra compatible to Verizon 5G?

The 5G network of Verizon in United States of America is using six bands in total. From these, the 12S Ultra can use only three.
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 Verizon 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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