Apple simultaneously released iOS 18.7 and iOS 26. iOS 26 is a major update featuring the new "Liquid Glass" design, but iOS 18.7 offers security updates and is compatible with older iPhones. Users can choose to install iOS 18.7 first for stability before upgrading to iOS 26, or install iOS 26 directly. Both updates are free, but Apple may stop signing older versions after a short time. iOS 18.7 is a smaller download, ideal for older devices or users wary of major updates.

Prepared by Jonathan Pierce and reviewed by editorial team.