How to enable VoWifi

edited September 2020 in Others
Rooted: Yes
Frequency of Occurrence:
Location: India
Firmware/App Version: WW_user_80.20.52.90
Model: ZC551KL(Laser)
App Name: Settings/Network
Description: How to enable VoWifi?
Support existed since Nougat update, however not able to find option to enable Wifi calling in Settings.

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