Hundreds of Millions of iPhones Still on iOS 18 — New Reasons to Upgrade

Apple says 74% of iPhones from the past four years run iOS 26, leaving about 26% still on older versions like iOS 18.

Apple issued a wider iOS 18 update to address security threats while iOS 26 includes stronger security protections.

A tester reported iOS 26 feels faster due to sped-up system animations compared with iOS 18, giving users another reason to upgrade.