How to Start an HD Voice Call (volte) - ZTE

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How to Start an HD Voice Call (volte)

1. Some operators and regions can handle the VoLTE service. For the specific situation or scope, refer to the local business hall or telephone. You must first register this service on the operator.
2. Enter "Settings-Network&internet-SIM cards-Mobile network-VoLTE HD voice" to enable this function.

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