I use the realme 7 pro on realme UI V1.0 and android 10, Build number RMX2170_11_A.34, Baseband version Q_V1_p14, kernel version 4.14.117, ColorOS V7. Using in Austria/Europe. Although both carriers (I use different ones with my two sim cards) support VoLTE and VoWIFI (it works well with Samsung S9+) I can't activate it on the realme because it is not even shown in the network settings. Is there anything I can do to make it work? I also tried changing the region of the device, but I always get invalid mmi code when entering *#3954391#. Also *#9434# does not work. I'm happy for any ideas, thank you!