OS 26.3.1(a) arrives as a background security update with a WebKit navigation API input-validation fix, with no new features expected.
Macworld reports iOS 26.3 introduces key features including a built-in iPhone-to-Android transfer tool, enhanced location privacy for newer devices, and EU-specific third-party accessory ...
Here are iOS 26.3.1 battery life drain and performance tested on various different iPhone models. Here are the details on this.