So I'm in the process of creating a few custom icons. The images I'm working with, will have a transparent background. Unfortunately, when I attempt to change specific apps' icons, my phone will not display the custom icons in .png format, only .jpg (which of course forces a solid background on an image). I'm pretty sure the Android OS system allows .pngs for icons, but again, I'm at a total loss of trying to figure it out. Could anyone be so kind to help me?