Why do I talk on my cell phone without sound?

1, which may be the cause of the network signal (because different mobile phones have different signal reception capabilities, the mobile phone signal may be bad in a certain position);

2. Let the other person check the phone or talk to different people. Because the other party can't hear the sound, it may also be caused by the other party turning off the sound;

3. Use voice tools such as WeChat QQ to talk and see if the other party can hear the sound, which may be a system problem. If there is something wrong with the mobile phone system, you can restore the default mobile phone (please pay attention to the backup of important files before restoring).

Some mobile phones have the option of not answering the phone in the settings. Check the settings of your mobile phone to see if you have turned on no incoming calls. It is also possible that I recently installed some abnormal software, which affected the normal call of the mobile phone;

4. Whether the mobile phone has a protective case or just a protective film may be because these cover the microphone;

If the problem can't be solved after checking the above situation, it is usually caused by the broken microphone. You can take the warranty card to a nearby after-sales store for repair.

Extended data:

Common troubleshooting of mobile phones:

Fault phenomenon: the mobile phone call is suddenly interrupted.

First, the reason for the failure:

1, the strong interference of radio waves will cause disconnection.

Because mobile communication is spread by radio waves, when some radio waves interfere with the productivity of the radio waves being used to a certain extent, the signal-to-noise ratio drops below the standard value, and the mobile phone will automatically turn off and disconnect.

2. Transmission is blocked and buildings reflect, which will interfere with the radio waves at the receiving point and cause disconnection.

3. When the handover fails, the user's voice channel needs to be switched from the original cell to the new service cell, but the user is also random when he is busy in the new service cell. If no effective voice channel is provided during the handover, the handover will fail, resulting in the phone being disconnected.

Second, the solution:

1. If the call is suddenly dropped, you can move and change the location, and try to avoid using it in a dead corner.

2. Turn on airplane mode, then turn off or restart the phone and try again.

3. Change the phone and card test, that is, change the mobile phone card to the mobile phone of family or friends and try again.