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. On my most recent trip to the UK, when I returned this week to the USA, I'm unable to make outgoing calls with my USA SIM card. I've tried all of the suggestions on your web page, plus things I've found using Google. No luck. I still can't make outgoing calls.
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.
sethandrew999 wrote:
In that case, I can’t seem to find the enable/disable VoLTE setting.
If you can't see it. Your device does not support a compatible version of VoLTE for that carrier.
Does that imply that my phone isn’t going to ever work with T-Mobile for voice calls?
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.
syaoran wrote:
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.
Thanks so much for taking the time to think about this and send really informative replies. I have spent so much time (including multiple phone calls with T-Mobile tech support), and made zero progress. It seems that you've been able to diagnose the problem using only my minimal and not-well-informed descriptions of the problem. Many thanks for that.
I used to be a huge fan of Xiaomi phones but they have the same issue, even with the global firmware. As more and more devices from Samsung and Apple offer dual-SIM via one pSIM and one eSIM or dual eSIM capabilities. That has helped those of us a lot that would otherwise have to carry two devices.
