This is a harmless glitch you can do yourself. I’ve tested it on iOS 9.3.1 on the iPhone 6S.
Here are the steps:
- Go to http://heyeased.weebly.com/round-folders.html and scroll down to find tiny gradient images.
- Touch and hold on any one of them and select ‘Save Image'
- Go to your photos app and set this downloaded image as your home-screen wallpaper
- That’s it! Go back to the home-screen and see the magic!
In case you have too many folders in a page, the glitch might work only on some of them.
Stay tuned for more iPhone glitches and hacks.