Note* Depending on operator, your phone must sometimes be operator-branded and/or use operator-customised system software to be able to use VoLTE. Your subscription (incl. SIM card) must support VoLTE for the device model you're using. To inquire if your device, software, subscription and SIM card support VoLTE, contact your mobile network operator.
To enable VoLTE:
1.Make sure your specific realme device model and network subscription support VoLTE.
2. Dial *#*#4636#*#*
3. Select the “Phone Information.”
4. Choose to click on “VoLTE Provisioned”, make it turn on.
5. Now, restart your device. You have done with the process.