Ever since updating to iOS 7.0.3, my iPhone kept telling me to “Connect to iTunes to use Push Notifications”. Connecting to iTunes did just nothing: the notice kept popping up. Additionally iMessage and FaceTime didn’t work anymore, really annoying.
Above that the notice forced some apps in a loop as an app would lose and regain focus with that dialog showing (Dropbox with a passcode for example would get stuck in such a loop). Not that handy.
To fix this, follow these steps (on your iDevice):
- Go to “Settings” → “iTunes & App Store” and log out of your account.
- Restart your iDevice.
- Go to “Settings” → “iTunes & App Store” and login again.
That should do it (at least it did for me).