Keeping iOS current provides security fixes, bug fixes, and new features supported by your iPhone. Backing up first is a sensible precaution before installing a major system update.
Update iOS From Settings
- Back up important data.
- Connect the iPhone to Wi-Fi.
- Connect it to power or make sure it has sufficient battery charge.
- Open Settings.
- Tap General.
- Tap Software Update.
- Review the available update.
- Tap the download/install option.
- Enter the passcode if requested.
- Allow the iPhone to restart and finish installation.
Turn On Automatic Updates
Software Update includes automatic-update controls. You can choose supported automatic download and installation behavior so important updates require less manual attention.
If There Is Not Enough Storage
iOS may offer to temporarily remove downloadable app content, or you can free space yourself. Review iPhone Storage rather than deleting irreplaceable photos or files at random.
If the Update Does Not Appear
Update availability depends on the iPhone model and Apple’s release schedule. An older iPhone may not support the newest major iOS version even though it can still receive an update appropriate for that model.
Computer Update Option
If over-the-air updating fails, a Mac or Windows PC can also be used to update the iPhone with Apple’s supported device-management software.
Allow Time for Post-Update Tasks
After iOS finishes installing, the iPhone may continue background work such as indexing photos, optimizing files, and updating apps. Temporary warmth or higher battery use can occur during this period. Keep the phone on power when practical and judge battery life after the device has had time to settle.