How do I add music from my iTunes library to my iPhone without losing the music library on my phone
Adding songs from iTunes library to my iPhone ‘s library without losing the already existing music files on my iphone
See here for help: https://support.apple.com/en-us/HT201253. For music, I sync only selected playlists, artists, albums, and genres. If you do that, you will not lose anything on your phone.
How do I add music from my iTunes library to my iPhone without losing the music library on my phone