iPhone SE 1st Gen isn’t compatible with Live Wallpaper.The selected Image should be Live Photo or default Live Photo Wallpaper.Keep note Live Wallpaper only works on Lock Screen.Secondly, Apple allows users to change Wallpaper directly from the lock screen by firmly long pressing on screen. However, there is no reason mentioned for it, but possibility it was one of the reasons for Battery Draining. Apple has disabled the capabilities of configuring Live Photos on devices updated with iOS 16.Here in this article, we show eight different ways to fix iOS live background features not working. Thus to maintain a plethora of features, the company quietly took action to remove them. However, to carry with the Lock Screen Customization feature, either iPhone has to add the new gesture or let the Animated Wallpaper thoroughly since both of them come to an action using same Long Press. Additionally, Live Wallpaper never animates unless you long press, which was completely pointless, instead it should be buried in settings. To see the Live Wallpaper in motion, users have to Long Press the screen, which eventually leads to access to the customizable Lock Screen Menu, unlike the Apple Watch.

The Live Wallpaper was introduced back with iOS 11, but later it was removed on iOS 16 along with Dynamic Wallpaper. Why Apple Removed Live Wallpaper on iOS 16?

Why wont my live wallpaper work