Facetime does not recognize username or password on ipad2 with ios6

Question

I have an email based user id. After I installed ios6, facetime started not to accept my username or password. My apple id and password work everywhere in apple but facetime.
Is there a problem with their servers?
It seems from forums this is such a recurring issue.
I tried all i could find with no luck.
I reset my password, checked my apple id details. All fine yet facetime does not accept anything.

Answer 1

Hi Friend,
First, Where are you located and what country did you buy your phone?  Some countries have restricted facetime, ie middle east, UAE.
Check if you signed in Facetime with your Apple ID and password (Settings>>Facetime).
Check if you have signed iCloud in.
Check that FaceTime is not disabled in general/restrictions. If that isn't the problem try changing dns servers on your iPad.
Go to Contacts app and select the person you want call then tap Facetime.
Change your address for your currently location. If not works, change it for your native country.
If not works, check if the person who you are trying to Facetime has signed in his/her Facetime too.
Most of times the Facetime calls work calling from your friend's email address instead of mobile number. So try to call your friend both ways (his/her mobile number and his/her email address).
If still not working:
1. Go to the Settings App.
2. Tap on Wi-Fi
3. Your chosen network will be ticked. Tap on its white arrow over a blue circle button to its right
4. Tap on DNS
5. Replace the current information with 8.8.8.8,8.8.4.4
6. Try visiting a website with Safari to see if this works
7. Try registering iMessage / FaceTime
If still not working, go to Settings -> General -> Date & Time -> Set Automatically: ON (Yes date time setting has been known to cause issue).
Hope it will be helpful