Forum Discussion

sethandrew999's avatar
sethandrew999
Network Novice
Hace 2 años

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....
t-mobile
  • syaoran's avatar
    syaoran
    Hace 2 años
    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's avatar
syaoran
Transmission Titan
Hace 2 años
sethandrew999 wrote:

It's not.  I'm able to enable it or disable it. It isn't listed as "VoLTE", but rather the option is "Use mobile data during calls" (and in the description, it says "When you are in a VoLTE call using..." so I assume this is the right setting).

That is a separate setting.  Even if the option to enable VoLTE was present, doesn't guarantee it will work.  There are tools to unlock those options, even if it won't work.  Your device is a dual-SIM device.  The option to enable data during calls will be available regardless.