Previously feature of WiFi calling was already available in J7 prime but later on it was removed from J7 Prime. At present feature is not available in J7 prime. You can not use it.
j7 prime still providing wifi calling features . I m using j7 prime and wifi calling feature working properly with jio sim. but At present if u use jio sim then u can use this feature and can enabled it from setting menu. Airtel is currently not supporting wifi calling feature with j7 prime that why u can not enable this feature from setting menu. but in coming days u can use with airtel sim also.
j7 prime still providing wifi calling features . I m using j7 prime and wifi calling feature working properly with jio sim. but At present if u use jio sim then u can use this feature and can enabled it from setting menu. Airtel is currently not supporting wifi calling feature with j7 prime that why u can not enable this feature from setting menu. but in coming days u can use with airtel sim also.
