How to Sign Into Game Center on iPhone or iPad

Open the Settings app on your iPhone or iPad. Find and click the iPhone Settings App Icon icon on your home screen to open the Settings menu.

Scroll down and tap Game Center. You can find this option towards the middle of your Settings menu.

Slide the Game Center switch to iPhone Switch On Icon. When this option is enabled, a pop-up window will prompt you to confirm your Apple ID.

Tap Continue in the pop-up window. This will import your account information from iCloud, and sign you into Game Center with your Apple ID. If you're using Game Center for the first time, you may be prompted to enter and confirm your Apple ID password here. If you want to sign in with a different Apple ID, you can tap the Not You? option here.