How to update iOS 12.5 to iOS 16 Multiple steps are required to upgrade iOS 12.5 as well as iOS 16. Check that your device is compatible with iOS 16. Backup to iCloud or iTunes. Go to Settings once you're connected to a reliable WiFi network. General, Software update. Install iOS 16. Accept the conditions shown on screen. After restarting, make use of your Apple ID to set up iOS 16. Restore backup data, reinstall programs, or change settings. Enjoy iOS 16's enhancements! If you're not sure what to do to upgrade from iOS 12.5 to iOS 16, look over this video to get step-bystep instructions

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