Connect your phone to your computer-Open itunes software-Music-Right-click Delete -iphone- Music-Sync Music-Remove Sync.
The specific steps are shown in the following figure:
Connect your mobile phone to your computer, open the itunes software (preferably the latest version), and click the music in the upper left corner.
Click and select the music to delete, and right click to delete.
Then click "iphone" in the upper right corner.
Then click "Music".
Finally, click "Sync Music" and a box will appear. Just click "Delete and Sync".
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