He made this possible
This is the instruction to activate VoWiFi / WLAN Call on the Poco F1
Its tested and verfied to work with EU ROM (Oreo & Pie based) and german provider o2 (Telefonica)
Before you read on i want to make clear that I am not responsible for bricked devices !
Basic requirements are root rights to do this mod
Maybe latest 2017 Qualcomm Diag QD-Loader Windows 10 Drivers signed are needed for this to work.
!!! Before doing this Mod you should backup EFS-partition !!!
- download QPST tool and install
- enable USB debugging in Developer settings
- now either go to terminal app and type:
su setprop sys.usb.config diag,serial_cdev,rmnet,adb
adb from PC
adb shell su setprop sys.usb.config diag,serial_cdev,rmnet,adb
- start PDC (from QPST tool) on PC
- Poco F1 should be recognized by PDC (if not install Qualcomm driver and check Device Manager)
- activate corresponding profile (in case of german o2 its DT_Greece)
- install VoLTE & VoWiFi Enabler Magisk module (optional) or activate setting with dialer code *#*#869434#*#*
- restart Poco F1
Original thread (in german !)