It's a logo for an iPad from Apple made up of two rounded rectangles inside each other. There is a dot on the left side between the two rectangles depicting the home button.
This iPad 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 5,700 icons, all in the same style and quality.