iTunes Match - 'No Music' on iPhone 4
I have an infuriating problem that I can't get rid of with iTunes Match.
I have had iTunes Match since launch and it worked fine on my Mac, PC, iPad and iPhone 4 for months now. But since about 3 weeks ago, my iPhone won't work at all.
When I go into Music, I see the cloud logo appear with a progress bar. After about 3-5 seconds, it disappears and shows 'No Music'. All tabs show this, except Playlists - which accuratley shows all my playlists as they are in the cloud. Going into these playlists shows the songs that are in there - some appearently downloaded, others with the cloud download button - but none will actually play.
I've restarted the phone numerous times, turned iTunes Match on and off, everything. So last night I decided to do an iCloud Backup, then I totally wiped the phone and restored from the iCloud Backup. That worked fine, and when I went into Music the cloud logo with the progess bar appeared. This stayed on for maybe 10-20 minutes this time, slowly filling up. Then it bombed out and went back to the 'No Music' message again, exactly like before the wipe & restore.
I am so fed up with not being able to use Match on my iPhone now. I hope someone out there can help!
Thanks in advance.
iPhone 4, iOS 5.1