I'm looking to set up some custom backgrounds for iOS and using Apple Configurator to drag an image into the lock screen tab of the preferences and the tool crops the image for me.
So, considering that there are iPhone 4S and earlier screens, iPhone 5 screens as well as iPad screens - I'm a little confused as to how to prepare an image so I can understand what will be cropped for each screen, both horizontally and vertically.
I can only see the portrait layout and it's not clear if the tool is showing me an iPhone 5 or iPhone 4 S sized crop (or any horizontal layouts).
Is there a book, blog or help guide that explains what size image is best used for this lock screen customization so I can pre-plan the crop areas for each size screen? If not, has anyone done the work to know what areas are visible on the current iOS devices when you prepare them automatically with Apple Configurator?