Fix for iOS 6 with iTunes Match music and video app problems (items are empty or show 0.00)
Alrighty folks, I have found something fairly easy to do to fix this if you want to today. I have been reading through the posts, and one person had an idea I tried and it worked like a charm. Being that today is launch day, I have done this a little different.
First, I noticed this problem when I updated my old iPhone 4 to iOS 6 on launch day. I noticed that my music and video apps were both acting up. I let it go, hoping that on my iPhone 5 (which arrived today 🙂), it would just work (like Apple says), but it didn't. I still had the same problem. I was thinking that I just had an incredibly corrupt back-up (4 years with the same back-up on iOS). However, I fixed it by doing the following:
First, I turned off iTunes Match (Settings>iTunes & App Stores>iTunes Match swipe to off.
Second, I logged my Apple ID account (Same screen = Settings>iTunes & App Stores>tap Apple ID: "email address">Sign Out
Third, sync your phone in iTunes. Click on your phone in the left bar. Then go through each tab. Make sure you uncheck the Sync box (at the top of the screen) for both music and videos. I would recommend just syncing before you go on, just to be safe.
Fourth, here, (since Apple's servers must be incredibly busy) I chose to back-up to my computer (instead of to iCloud) by clicking in the box next to Back up to this computer. Then hit Apply (right bottom of window) and then also hit Sync (again, in the same place as Apply). This will take a while, so your computer can back up the contents of your phone without the jacked up iTunes Match data.
Fifth, after the sync (and backup) is done, eject your phone, unplug it, and Erase All Content and Settings (Settings>General>Reset (all the way at the bottom)>Erase All Content and Settings (second from the top). This may take a few minutes, but when your phone reboots, it will start off like new.
Sixth, go through the steps until you get to the step to either Set up as a new phone, Restore from iCloud backup or Restore from iTunes backup. Choose Restore from iTunes Backup. It will prompt you to connect to iTunes. Connect your phone. Pay attention to assure that the back up you just made is the one it prompts you with in iTunes. Click Ok (or whichever option is yes, I don't actually remember what the button said).
Seventh, after the restore is done, your phone will be back in working order. Simply go back into Settings>iTunes & App Stores>tap Apple ID: "email address">Sign Out. Then sign in again. After your account is accepted, turn on iTunes Match by iTunes Match (Settings>iTunes & App Stores>iTunes Match swipe to on.
Finally, open your music/video (if you have any music videos) app and verify that it worked. With any luck, you'll see a complete and working list of all of your iTunes Match music.
Thanks to those who tried things that give us ideas to try. Thanks to you that pay attention and follow these directions (I've tried to make them as idiot-proof as possible). Most of all, here's hoping that it works for all. Good luck! 🙂