The 8.8.8.8 didn't work for me. Neither did the date and time auto=on. I went through the Facetime trouble shooting guide and nothing has worked. It simply indicates a network problem, yet my network is fine and all other aspects operate fine.
This is an iPad2 and Facetime was originally working - I had made a number of calls and it was all good. Then suddenly the other day I went to make a call and realised it wasn't signed in, and when I tried to sign in it refused and complained about a network problem.
I also tried 8.8.4.4
I also rebooted my iPad
I also tried waiting for a couple of hours
I also tried restarting my router
I tried logging in Facetime from the Configuration entry and from the App login
I also tried looking for updates, but there are none
Skype still works (thank God for Microsoft)
Has Apple shutdown Facetime and not told anybody????