Image: Apple
iOS 27 is Apple’s next major software update for iPhone, introducing a range of new features, improvements and changes across the operating system while maintaining support for all iPhone models compatible with iOS 26.
Before installing a major iOS update, it is worth making sure your iPhone has a recent backup and enough free storage space for the download and installation. Keeping the iPhone connected to power can also prevent the update being interrupted.
You do not need to erase your iPhone to install iOS 27. The update is installed through the Software Update section of Settings and keeps your compatible apps, photos, messages and other data in place.
If iOS 27 does not appear, check that your iPhone is connected to the internet, has enough available storage and is compatible with the update. Software Update will show the latest version available for your device.