G_Антон_Русинов_qQub , via OnePlus 8 Pro , Nov 7, 2020 : Update!!!! I get it! voWifi and voWi-fi - In2020 22.214.171.124 without ROOT!!! https://forum.xda-developers.com/t/...wifi-on-op7-pro.3934227/page-26#post-81480319 Instructions for PDC connection without ROOT Android 11: 1. adb reboot ftm 2. adb shell 3. setprop sys.usb.config diag,diag_mdm,qdss,qdss_mdm,serial_cdev,dpl,rmnet,adb 4. Open PDC and change profile 5. adb reboot Then just waiting 1-5 minutes and you can see Volte and voWi-fi! Oneplus 8 PRO IN2020 Android 126.96.36.199.IN1AA Stock without ROOT Volte and voWi-fi switched on in the settings Country: Russia Operator: MTS, Volte and voWi-fi include and support Volte and voWi-fi stopped working after updating the firmware form stable 11 Android 188.8.131.52 to 184.108.40.206. Port for PDC is locked in Android 11, and without ROOT I cannot switch it to correct profile and enable volte and voWifi myself. Help me please to activate Volte and voWifi without root.