Forum Discussion
Problem with OPPO phone in USA
I have a dual-sim OPPO FInd phone, and I have a USA SIM card with T-Mobile. For the last couple of years I've traveled back and forth to the UK, switching between US and UK sim cards with no trouble....
sethandrew999 wrote:
Does that imply that my phone isn’t going to ever work with T-Mobile for voice calls?
Yes. As of last year, VoLTE is now required to make and receive calls on the T-Mobile network. No compatible VoLTE on your device means the device is no longer compatible with T-Mobile USA or any US based cellular provider's network.
It more than likely is not T-Mobile VoLTE compatible. Especially with the more recent changes to Google's implantation. Even older devices that haven't gotten an update in the past couple of years can lose VoLTE compatibility when they were previously.
Asian market devices are most compatible with Asian markets. Even when they are advertised as global devices. That only holds true for some band compatibility and not for VoLTE, VoNR, and VoWiFi compatibility.
