Why does the mobile phone always have a black screen when watching movies, with only sound and no picture?

If the screen is black when the mobile phone plays video, we suggest that you:

1. Verify whether the Internet is used for online video viewing, and try to change the video player.

2. Try downloading other third-party video players.

3. If this problem occurs in your own player, please:

1). Replace other video playback attempts.

2). Try to clear the video player data.

4. If not, please back up the data (contacts, text messages, photos, etc. ) and try to restore the factory settings.

If the problem still exists, it is recommended that you take the machine, purchase invoice and warranty card to the local after-sales service center for testing.