Idea of iOS Application Placeholder Icon
It is a little place to put the IOS apps that you download. It is a square box made out of dotted lines where you can put your newly downloaded apps so that they will not be sprawled out all overy our home screen, creating pages and taking up space.
This iOS Application Placeholder icon is made in Material Design style
developed by Google. This style is based on extremely simplified shapes, thin two-pixel lines, and is optimized for 24x24 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 6,200 icons, all in the same style and quality.