Help T-mobile Wifi calling supporting firmware for phone from Asia

[Calvert Wong]

Hi guys,

I am having a Samsung Galaxy Note 1 which is bought from Asia and I am currently residing in United States. T-mobile is providing WiFi calling functionality and my phone seems to be not compatible as my phone is having Asia firmware.

What if I upgrade the firmware to an US version, is it going to work?

Can someone give me the US firmware version number. I am not sure which version is the correct version.

Thanks in advance.

Calvert