Android Icon Size In Pixels. However, the image itself must be no more than 24×24 pixels centred within the icon file. Android starting with version 5 lollipop uses the material design specifications for icons.
Let’s assume, 1dpi (dots per inch) = 40 (minimum visible amount of content area per inch) to get artboard size for your ui design you have to multiply aspect ratio of your mobile device with 40, for an e.g. Also, there is the high resolution icon to be produced for the google play store listing. 48, 72, 96, 144, & 192 pixels png format.
The coordinate system ios uses to place content onscreen is based on measurements in points, which map to pixels in the display.
They have patiently described everything: The icon must be exactly square, i.e. Android icons require five separate sizes for different screen pixel densities. The expo build service will generate the other sizes for you.