incredibilistic, don't do that. I have had the same problem than everyone else on this thread and tried EVERYTHING.
I even did a "restore as new iPhone". Result? It worked for one day but the bug occurred again after I tapped on "Make Available Offline" on a few albums in Music.
I have contacted the support and they couldn't help. I even shared the link to this thread. They told me to contact the technical support, which is a paid service, I think (you have to call and it might cost 30 dollars depending on your warranty).
So here are the things I realized:
- The bug starts when when you try to make songs offline on Music (to be confirmed).
- The bug affects other things as well: iTunes/iCloud/iBooks unavailable until a restart of the phone, then working 20 minutes only until the bug reappears.
- I realized that links inside emails won't open either after the bug occurs. No idea how this can be linked, but it does look like once the bug happens, it really screws a lot of things on the phone (unresponsive settings/screen lag etc.).
Solutions:
- Wait for iOS9 and hope it fixes it.
- Call the technical support and see what they can do (not recommended though...)
If iOS9 doesn't fix it, the only thing left would be to buy another iPhone model. And this solution looks pretty bad to me.
Let's wait and see.