Since updating to iOS 7 in September I've had instances where all Apps don't update and when I go to the update screen in the App Store I get a blank page stuck in loading. I've had it happen a few times since the update on both my iPad and iPhone and powering off completely my devices has solved the problem. Yesterday on my iPad, when I tried downloading a new App, I couldn't find it anywhere on my iPad even though it appeared when I went into usage. I rebooted and I was once again able to download but this time I also noticed that I had new FaceTime missed calls that hadn't shower up before. Did anyone else experience a similar problem ?