Could anyone tell me why my iTunes thinks it is "synced" but it is in fact not synced? There are songs and files on my iTunes that do not transfer to my phone.
For the music I would convert the music to a different file format or enable Manually mange music and videos and then drag and drop the music that you want on your iPhone.
iTunes: How to convert a song to a different file format
Managing content manually on iPhone, iPad, and iPod
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