Now you can make high-quality phone calls using Voice over LTE (VoLTE) on iPhone 7/7 Plus, iPhone 8/8 Plus, iPhone X, iPhone XR, iPhone XS/XS Max, iPhone 11/11 Pro/11 Pro Max. Update to latest iOS version, then tap Settings > General > About and follow the prompt to complete the update.

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To enable VoLTE for Apple HS

To enable Voice over LTE (VoLTE) on iPhone 7/7 Plus, iPhone 8/8 Plus, iPhone X, iPhone XR, iPhone XS/XS Max, iPhone 11/11 Pro/11 Pro Max; tap Settings > Cellular > Enable LTE > Voice & Data.

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