I have the droid charge and i frequently change wallpaper from an app call "backgrounds". When I set the new picture as my default wallpaper where does it store it on my phone? I just want to make sure they are not taking up space on my phone.
Depending on which background app your using, unless you specify to save the image to your phone then it wont, it will just use the image as the background without saving it anywhere on your phone.