Joke Collection Website - Public benefit messages - How to turn off HD voice calls?

How to turn off HD voice calls?

Unicom VoLTE (High Definition Voice) service can be turned off in the following ways:

1, SMS: after TDVOLTE is sent to 100 10, reply "y" to turn off the VOLTE function;

2. mobile APP: open the mobile APP and go to services > handle > VoLTE HD calling;

3. online business hall: log in to the online business hall and handle > VoLTE HD calls;

4. Close the business hall through the local Unicom customer service hotline or with the owner ID.