https://macmost.com/e-1617 If you play games on your iPhone and iPad, you probably are using Apple’s Game Center system for high scores, achievements and player challenges. It is fairly simply to turn on Game Center in your Settings. You can also select your player name which will appear in high score boards and other places. You can even sign in to another Apple ID just for Game Center. If you ever find you are having trouble with Game Center, the solution is usually to turn it off and then on again.