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How to turn on the HD voice call function
Unicom VoLTE HD voice function has the following ways:
1, just send a short message: send "DGVOLTE" to 100 10, and confirm Y. After successful opening, the system will reply: Dear users, the VOLTE function has been successfully opened for you, which will take effect immediately. Thank you for your support of China Unicom.
2. China Unicom APP
Service handles VoLTE HD calls.
3. Online business hall
Processing-Basic business processing VoLTE HD calls
4. Go through the business hall or call the customer service hotline 100 10.
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