Internet not working on iPad mini with iOS 7 Since a couple of days internet connected applications (such as facebook) have stopped working on my wife's iPad mini which has iOS 7.1.2.

Further symptoms:


internet works in Safari
internet doesn't work in Facebook (though it works with the messenger component), the app store, Dropbox
trying to install updates fails (seems to time out, doesn't even start downloading)
tried to sign out from the Apple account (Settings -> iTunes &amp; App store) and sign back in, however it won't let me sign in (tried multiple times and confirmed that the account details are correct by signing in on a PC)
tried rebooting multiple times to no avail


Any ideas what could be done? I will try to connect it to a PC having iTunes later to see if can help - also will try to update it to iOS 8.4 (hopefully it's possible to do so without being signed in to the apple account).
I solved it - turns out the problem was a flaky internet connection! The clue was that I was unable to sign in to iTunes on my Windows laptop (the connection was timing out), even though I could do the same on my Linux laptop.

I rebooted the router and then was able to sign in to the iCloud account from the iPad and everything started working. I also updated it to iOS 8.4 just in case :-)