If you set the same image as both the Lock Screen and Home Screen on iOS4, when you Slide to Unlock, the background stays in place while the icons slide into position. With different images, the screen does a quick fade-to-black-and-back.
You May Also Like
Little features that could make a big difference in iOS and iPadOS
I have a growing list of little features that I hope Apple will add to iOS someday. Since WWDC 2021 was not that day, I’ll share them here.