If I tap on the game invitation notification from a friend, the game is started. It does not ask me to accept or decline. How do I decline a game invitation?
I used my nickname on iPhone 5's Game Center before I changed my Apple ID to [appleid]@cloud.com. After changing my Apple ID to an @icloud.com account, I then deleted my old Apple ID from my iPhone. ...
For various reasons, I've only just updated to iOS4. There are a number of games that I have gained achievements for, it is possible to update the game center app to recognise these achievements ...