The physical home button is no more, but there's a workaround you can use on pretty much any iPhone.

In iOS 18's Photos app, the Edit button has been moved to the bottom of the screen, in between the i and Trash buttons.

Action Button Functions Here's what the Action button can be programmed to do: Accessibility: Access to various accessibility settings, such as VoiceOver, Zoom, AssistiveTouch, Live Speech, and more.