We already have a full explainer on how to generate AI wallpapers on the Galaxy S24 series but the experience essentially serves up a series of templates, with editable prompts that you can tweak using predefined alternative terms, customizing subjects, styles and more.
You can have a wallpaper featuring an expressionist T-rex, flowers that appear as if to be made of lace and an infinite number of original iterations in between, with the ability to generate entirely new wallpapers using the same prompt as many times as you like.