Moderator Edit:
Please use this thread for any wifi calling (VoWifi) related discussion, please do not open more threads.
If you want to submit a bug report, please use this page https://forums.oneplus.com/feedback
If you are using JIO, they are officialy supporting some oneplus devices , you need to contact them and ask for support if your device model is not supported
Source: https://www.jio.com/en-in/jio-wifi-calling
https://www.airtel.in/wifi-calling
Update: Now OnePlus 7 pro started supporting VoWiFi for jio in India, officially, with the 10.3.1 update
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Do we get support for Airtel Jio Vowifi on OnePlus 5 / 5T ?
Last edited by a moderator: Dec 31, 2020
Stickied Post
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.
Last edited: Sep 29, 2020
Hello, is anyone able to use VoWifi service on their OP6t in India? I read news that both Jio and Airtel has launched VoWifi in India. I assume our device is capable of using this service only there needs to be a software update for the option to show the toggle for VoWifi.
Last edited by a moderator: Dec 31, 2020