Celcom has now started introducing VoWiFi (Voice over WiFi) support for iPhone users. You just need to update to iOS 15.6, and can activate this feature on your iPhone today.
Through this feature, it makes it easier for users to continue to enjoy voice calls clearly through the use of the WiFi network – especially in low Celcom coverage areas, such as in tall buildings or in the countryside. This feature depends on a stable and fast WiFi network connection.
Previously, this feature was introduced on selected Huawei and Vivo devices. However, through today's update for iOS 15.6, the VoWiFi feature is also added for iPhone device users.
You just need to update to iOS 15.6, and then go to the Settings > Mobile Data > Wifi Calling page to activate it.
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