Summarize this article:

Usually, if you want to change the shape of your iOS folders, you need to jailbreak your device or squint really hard or something. But one person has found a way to make your app holders cool-looking and round, and all you have to do is change your device’s wallpaper. 
  
 You can see the cool circles in action in the video below. 
  
 YouTube user videosdebarraquito shows off the trick, which involves setting a very small image as your Home screen wallpaper. 
  
 You have two options for doing this once you’ve downloaded a sufficiently small image (the ones in this method are 3 pixels by 3 pixels): Either go to the picture in your Photos app, click the Share icon, and select “Use as Wallpaper,” or go to Settings > Wallpaper > Choose a New Wallpaper > Camera Roll and select the tiny image there. 
  
 If you don’t have any 3×3 images lying around in your collection, you can head over to this post by heyeased and grab some of the ready-made ones there. That page says the round-folder trick should work on any iOS device capable of running iOS 9.3; we tried it on an iPhone 6s and an iPad Air 2, and it worked on both. We also found out that you can resize any image to make this work if you don’t like the colors on offer there. 
  
 So, how does it work? We have no idea. But it doesn’t change the shape of all of your folders. And, if you do it on an iPad, some will be round or square depending on the orientation of the tablet. We tried a few of these and couldn’t find one that would modify all of them all of the time, but people who are super-enamored with the idea of round iOS folders won’t mind trying all the combinations they can. 
  
 It really does look cool, even if we don’t understand why it’s happening. If you’re an iOS developer who can fill us in, please let us know in the comments. ||||| Starting in 1996, Alexa Internet has been donating their crawl data to the Internet Archive. Flowing in every day, these data are added to the Wayback Machine after an embargo period. ||||| Ever wanted circular folders instead of the squared off ones on your iPhone? Youtube user videosdebarraquito shows off how to do that by using a special wallpaper image. 
  
 To do this, you’ll need to download one of these tiny, 3x3 images, then set it as your home screen wallpaper (Settings > Wallpaper > Choose a New Wallpaper > Camera Roll). Once you do, you’ll notice that all your folders on the main page turn into circles. This doesn’t work with multiple pages, but it’s a fun little trick nonetheless. 
  
 Round Folders Glitch | YouTube via Cult of Mac |||||
– Looking to gussy up your iPhone or iPad home screen? Lifehacker reports on a "fun little trick" that changes your lame, old square folders to awesome circle folders. All it takes its setting a very small image—like 3 pixels by 3 pixels small—as your home screen wallpaper on any device that can run iOS 9.3, according to Cult of Mac. Don't have any tiny images lying around? This website has a bunch to choose from. After setting the image as your wallpaper, some of your folders will be circles. It's unclear why only some folders are affected and why the folders affected change based on the image you use. In fact, the whole thing is pretty unclear. "It does look cool, even if we don't understand why it's happening," Cult of Mac states.