Other iPhone and iPad models: Press and hold the side or top button until the power off slider appears.Then press and hold the side button until the Apple logo appears. iPhone X, 11, or later and iPad with Face ID models: Press and hold the side or top and the volume up or down buttons together until you see the power off slider.Mac: Click the Apple menu and choose Restart.If there is an update, follow the onscreen instructions, if there is no update available, then restart your device. macOS (Mojave or later): System Preferences > Software Update.iOS or iPadOS: Settings > General > Software Update.Please note that before doing anything please ensure that you update your device to the latest version of iOS or iPadOS or macOS. You can update or change your Apple ID payment method in Settings on your iPhone, iPad, or iPod touch, or in iTunes on your Mac or PC. This means you will not be able to use the App Store, iTunes Store, iCloud, and more. This will prevent you from paying for Google products.