Software updates bring security fixes and new features to iPhone and iPad. You can install the latest compatible iOS or iPadOS version from Settings.
An iPhone uses iOS, while an iPad uses iPadOS. The available update depends on the device model and its installed software. Older devices may already have their latest supported version without running iOS 27 or iPadOS 27.
Your data and settings normally remain in place during an update, but a recent backup provides a recovery copy if something goes wrong. Downloading can take time, and installation temporarily interrupts use while the device restarts.
Steps to update iOS and iPadOS to the latest software version:
- Back up your iPhone or iPad before installing new software.
A completed iCloud backup or computer backup preserves a recovery copy of your information.
- Connect your iPhone or iPad to a Wi-Fi network.
- Plug the device into a power source.
Power should remain connected throughout installation.
- Go to General in the Settings app.
On iPad, General is in the Settings sidebar.
- Select Software Update.
- Select the iOS 27 or iPadOS 27 upgrade if it is offered separately.
This screen shows the installed version and any available update, and a newer major upgrade may appear near the bottom. An up-to-date message with no upgrade offered means there is nothing to install. An earlier update may need to be installed first.
- Start the update using the available Update Now or Download and Install button.
The button depends on whether the update has already downloaded. Update Tonight schedules a later installation instead.
- Follow any prompts for your passcode, the update terms or a final confirmation.
- Wait until installation finishes and the device restarts.
Installation time varies with the update and device, and the progress bar may move slowly. Apple's update help covers insufficient storage, download errors and an update that will not finish.
- Check that Settings → General → Software Update shows the device is up to date once you have unlocked it.
Another available update means the device still has software to install.