

Question - Any version that has dual-sim and Wifi Calling on T-Mobile in US? | X...
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Question Any version that has dual-sim and Wifi Calling on T-Mobile in US?
Move to Oxygen OS 12.1 Global that supports 17 5G SA & NSA Bands, however with flashing other region firmware will not support carrier features like VoWiFI and VoNR and ViNR services.
If Possible buy an Unlocked Version from Europe, China or India as Bootloader cannot be unlocked on an Carrier locked device from T-Mobile or Verizon.
Move to Oxygen OS 12.1 Global that supports 17 5G SA & NSA Bands, however with flashing other region firmware will not support carrier features like VoWiFI and VoNR and ViNR services.
It is unfortunate that it is extremely difficult to get dual VoWifi with latest oneplus phones in US. Even esim support would get the job done.
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