What is the echo of the mobile phone?

If you use a vivo phone and there is an echo during the call, you can check the following:

1, hear your own echo when you speak.

It may be because of the other party's mobile phone. Suggest that the other party switch the call mode and try again (hands-free? Or? Hands-free), and learn from the other party to see if the microphone of the other party's mobile phone is blocked. ?

It may be due to the network, so it is recommended to contact the operator to open VoLTE HD calling service and try again. When the VoLTE function is enabled, the HD icon will be displayed in the signal bar, or move to an area with good signal and redial.

2. The other party hears an echo during the call.

Maybe it's the local cell phone. Please pay attention to check whether the microphone is blocked. For example, being blocked by a finger may produce an echo. You can try it by adjusting your hand grip.

It may be due to the network, so it is recommended to contact the operator to open VoLTE HD calling service and try again. When the VoLTE function is enabled, the HD icon will be displayed in the signal bar, or move to an area with good signal and redial.

The telephone numbers of the four major domestic operators are 10099 (China Radio and Television), 10086 (China Mobile),10 (China Unicom) and 10000 (China Telecom).

3. If the above methods fail to help the recovery, it needs to be detected and handled by the customer service center (customer service center address: enter vivo official website /vivo Mall APP-My service outlets/after-sales outlets-select provinces and cities to inquire about the customer service center address).