Published at Saturday, October 03rd 2020, 01:28:39 AM by Millie Bright. Iphone 11. Changing the iPhones wallpaper really is a piece of cake. The wallpaper is basically a picture saved in a format that can be uploaded and saved to your iPhone and all you need is a computer an access to the Internet and your away. So where do you get these wallpapers from well you could start by just doing a Google search that will throw up plenty of options.