I cannot backup my phone or access the store. This has happened after the last several updates. For the store, I see a blank screen with the load bar only halfway loaded. When I try to backup the phone, it hangs and I have to close iTunes. Apple's tech service has been useless. Not only on this occasion but several others. Any suggestions would help. Thank you
iPhone 4, iOS 5.0.1
With those symptoms, I'd try the following document:
iTunes 10.5 for Windows: May see performance issues and blank iTunes Store
Try this.
Close the App Store completely by pressing the home button twice, pressing and hold the App Store icon until it starts to wiggle, then tapping the minus sign to close it. Re-launch the App Store.
http://appletoolbox.com/2012/10/app-store-not-working-blank-screen/
Hope that helps!
Blank iTunes store after update.
