Can't sign in to App store after iOS 8?

Since I installed iOS 8 on my iPhone 5s it says could not sign in an unknown error has occurred I tried to sign out in sign in but I can't it work just fine with iOS 7

I don't have this problem because I already have iOS 8, but I had the problem when I got iOS 7. What I did: Hold the home button and power/lock button until it restarts. Hope this helps

  • Why is it taking forever to sign into iTunes and App Store? My dad just bought an iPhone XR and is setting it up. He tried to add his apple id in settings, but it's not working. He entered his email and password but it just says "signing into itunes and app store" while loading. It's been loading for about ten minutes now, nothing is happening except for the little circle loading thing.
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