yeah it's possible, ok lets clear it you flashed AOSIP ROM & don't have VoLTE right ?I do not have VoLTE in realmeUI on my phone, but mobile operators support VoLte. Phone CN version in it there is no built-in VoLte. I use the phone in Europe. Those who bought the phone from the Global version, they have VoLte. I would like VoLte to be in the CN version. Is it possible to do this?