-To start, try and upgrade your device operating software to the latest version that supports Wi-Fi Calling
-Go to Settings on the Smartphone
-Switch On Wi-Fi Calling
-Try and switch on VoLTE
To enjoy this new service without any interruptions on any of the networks, you should be upgraded to the latest device software update of your Android or iOS smartphones and have access to a high-speed and stable Wi-Fi internet connection.
Upgrade to the latest device Android or iOS Smartphone so as to enjoy good internet connection. Besides, there must be stable Wi-Fi internet connection.
Check the listed phones below to confirm if your Phone is compatible to the service.
The phones compatible for the free calls are: iPhone 6S and above, Samsung S10, S10 , S10e, M20, One Plus 6 and 6T, Xiaomi Redmi K20, Redmi K20 Pro and POCO F1, Samsung J6, Samsung A10s, Samsung On6, Samsung M30s, OnePlus 7, OnePlus 7 Pro, OnePlus 7T and OnePlus 7T Pro and so on.