Why is there no VoLTE option on my iPhone 11?
My son has an Iphone11 that has been updated to IOS 17.6.1 and shows 4G at the top of the screen. It was purchased at Kmart and network provider is Belong, they're saying he needs to upgrade his phone as it doesn't support 4G. I have tried to find voice data or the VoLTE option but nothing is coming up on his phone. Does this mean that his phone is useless now? Can someone please tell me a way to work around it as it is in great condition?
[Re-Titled by Moderator]