View attachment 1442172
View attachment 1442173
After update OP5T to Android 10, missing switches to VoWiFi and VoLTE.
In this tutorial i will show how to fix this.
It is enabling VoWiFi and VoLTE even in Poland with T-Mobile, Orange and Play carrier.
This method doesn't required root.
0. Make sure that you just enabled the VoWiFi and VoLTE in your carrier first !!!
1. Download and install the old LogKit:
https://www.apkmirror.com/apk/onepl...lease/onepluslogkit-1-0-android-apk-download/
3. Type *#800# --> oneplus Logkit --> Function Switch --> enable VoLTE and VoWifi switch
4. Open Settings --> WiFi & Intenet --> SIM & netwok --> enable VoLTE and VoWifi switch
5. Connect your phone to PC
6. Type *#801# in Phone app and enable Serial and Full-port switch
7. Download and unzip the EfsTools with config files includes:
https://drive.google.com/folderview?id=1CUPpk5xGoV3cH6HTFLJSIZuavY5tW5Qm
8. Open CMD as Administrator on the PC, navigate to the folder where you extract the files (eg. cd c:\EfsTools-0.10-modded-1.2-win32)
9. Now execute the following commands:
EfsTools.exe efsInfo
EfsTools.exe writeFile -i mcfg_autoselect_by_uim -o /nv/item_files/mcfg/mcfg_autoselect_by_uim
EfsTools.exe writeFile -i mcfg_autoselect_by_uim -o /nv/item_files/mcfg/mcfg_autoselect_by_uim -s 1
EfsTools.exe uploadDirectory -i mcfg_sw.mbn -o / -v
EfsTools.exe uploadDirectory -i mcfg_sw.mbn -o / -s 1
Thats it. Commands with "1" on at the end are for the second SIM card.
Click to expand...