iPhone 6s won't sync with iTunes 12.3

I was having a similar problem; when I went to my music that is stored on my PC (the music note on the far left) and tried to play a song, i got an error that iTunes couldn't find the location on music file (like it had lost the path somehow). After re-establishing the path, it found all of my music and when I synced with my phone, all the music transferred to my phone again.

Hope this helps.

This is similar to a problem I have too. I have iPhone 6s On iOS 9.1 and latest iTunes 12.1 I think. Mac Pro on elCapitan. Recently subscribed to Apple Music.

Since the recent upgrades and addition of Apple Music I am no longer able to sync my playlists from iTunes in my Mac over to my phone. The playlists are changed in the Mac and work fine. I sync the phone and it appears to be working as normal, but when finished the songs in my playlists have not been updated and don't reflect what is in iTunes on my Mac.

ALso, the iTunes interface has changed. When I have my phone connected (cable) to my Mac I am no longer able to drag and drop music into the iPhone library from the Mac library. I have entered the "edit playlist" button when I am managing the content on my phone and I can see the library on my Mac and can highlight the content I want. When I drag it across as soon as I let go of the mouse to drop it, the content does not drop but instead goes back to the Mac folder.

Has has anyone else run into this and do you have a solution? I'd love to know if you have any suggestions.

Thanks from BC

I have the same problems as you all. I discovered that doing a hard reset of the phone before synchronizing then all my music and playlists magically appear on my Iphone. It shouldn't be the solution but is a temporary fix.

So Hard reset, Sync and then check if your music is in your phone.

Good luck.

AFAIK, this is an Apple upgrade issue for which Apple has not provided either a path to return to earlier versions of iTunes. But, also a method to return iPhone 6s to an earlier version which worked just fine. I now have only one Apple power cable which works only in my automobile but not to my computer and not to iTunes 11.4.