VoLTE works correctly on your device, so please give details of
its model,
the version of UT used,
and if possible,
in which country and with which mobile operator.
@libremax
it works very well, also audio seems to be better, more clear to understand the other side
Xiaomi Note 9 Pro (miatoll joyeuse global)
channel devel
Vodafone - Czech Republic
Phone calls over VoLTE in the USA are now working for Xiaomi Redmi Note 9 Pro (miatoll), using latest Focal (20.04) dev channel build! Tested using T-mobile network, calls are clear with no echoes either way, with both calling and receiving working great. SMS text and single recipient MMS photo sending and receiving work on this device with VoLTE as well. Big thanks to the UBports team and the community devs and porters for this very big step for UT!!
Best regards,
Steve Berson