Why does Apple's mobile phone have sound when listening to songs and no sound when listening to videos? What happened?

Think about software problems by personal intuition, just like computers sometimes crash. So, I solved it like this: setting-general-auxiliary function-voiceover-on, and then I can hear the analog sound, which shows that the speaker is good. Then go back to the home screen and turn on the music. If music can be played, it means it can be played outdoors. Finally, go back to VoiceOver and close it.

If not, please try the following methods:

Check whether the metal plate in the earphone jack is misplaced and dial it back with a refill.

2. Check whether the player equipment and mobile phone speakers are prohibited, and adjust the volume appropriately.

3. Enter the phone settings-mode change-change the headset mode to external sound mode.

4. Put a toothpick through the speaker hole. If it still doesn't work, restart the phone or restore the factory settings.

If nothing works, you can only send it for repair, which proves that the speaker is damaged.