This can't be a liar. I have the same experience, because Apple is globally connected, and I can't see the distance. Someone may play the game played by your mobile phone on GC, and they happen to add friends pk when they see you. In addition, you may accidentally open GameCenter, resulting in account login. If someone is bored online or wants to play together, you can add friends. It doesn't matter. Because Apple's software protection function is basically the most advanced among all mobile phones. It is rare to hear about the fraud case of Apple's mobile phone. I suggest you treat the fans on Apple normally. If you don't want to pay attention, you don't need to add friends. Under normal circumstances, you can safely add it.