1. To use AT&T HD Voice, both caller and receiver need an AT&T HD Voice-capable phone and must be located in an AT&T HD Voice coverage area. To turn AT&T HD Voice on, swipe down from the notification bar, then select the Settings icon from the shortcuts tab.


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  2. Select Mobile network.
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  3. Select Mobile Data.
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  4. In the Enhanced LTE Services tab, select the toggle to on to enable HD Voice.
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  5. To turn AT&T HD Voice off, go to Settings > Mobile network > Mobile Data > then select the Enhanced LTE Services toggle.
    Note: Turning AT&T HD Voice off will also disable AT&T Video Call and Advanced Messaging. Learn more about AT&T HD Voice.
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