I got an email from ATT saying they are upgrading their network and phones that don't support at least 4G LTE and HD voice won't be supported. I have an Xperia XZ2 and they sent an email saying the phone isn't supported. This seems odd to me since I can use 4G LappvalleyTE just fine on their network what is HD voice and why would it make my phone not work.
tutuapp
Is this true my phone will stop working? Are there networks I can get that will continue to be supported. What networks work with an unlocked Xperia XZ2 I thought it was just ATT. Any help would be appreciated.
