Huawei p30 mobile phone has no sound.

There are several possibilities for the phone to suddenly mute:

1. The volume is too low, mute. Press and hold the volume button next to the phone to adjust.

The mobile phone system is out of order. Try to restart the phone.

3. The mobile phone has turned on the Do Not Disturb mode. Try to find do not disturb mode in the phone settings and turn it off.

4. There is something wrong with the ringtone setting. It may be that the ringtone is set to mute, or the ringtone is set by yourself, and the ringtone file is lost. You can try to adjust the ringtone settings by going to phone settings-sound settings (different models may be different).

5. The mobile phone speaker is damaged. You can see if your mobile phone can play music first. If not, there may be something wrong with the speaker of the mobile phone. Please take your mobile phone to the official after-sales service office for inspection and maintenance.

6. If there is a problem with the mobile phone system, you can try to restore the factory settings and brush the machine. (Remember to back up important things before operation)

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Some software sound settings come from the handset, such as WeChat chat, and voice information can be set from the handset (I >；; Settings > Chat > Play sound with the handset), the sound of the speaker will be small, and sometimes it will be mistaken for no sound.

Plug in headphones and try to see if the sound can come out of them. If the earphone is normal, the speaker hardware is broken. It is recommended that you back up the data and take the purchase invoice to the outlet for maintenance.

If there is no sound when the call comes, see if it is muted, or if there is any other software to intercept the call, such as 360 security assistant and blacklist of mobile phone housekeeper. If so, set the cancellation interception in the software.

Did you turn on the Do Not Disturb mode? Settings of EMUI 2.3, EMUI 3.0, EMUI 3. 1: >; Set all > Privacy and Security Zones > Do Not Disturb "and turn off Do Not Disturb mode.

EMUI 4.0: "Settings > Do Not Disturb", turn off do not disturb mode.

Or slide down directly from the top of the screen to open the notification panel. On the "Switch" page, click "Do Not Disturb" to close, press and hold to enter the Do Not Disturb setting interface and set the Do Not Disturb item.