Android Screen Sizes

I’m beginning developing for Android, and I’m wondering whether it matters which screen size is chosen to build for before publishing to the Google Play Store? There are 14, so would it matter which one it is set on, and would it run on every android device?

Thanks

Most of the time its not the screen size that matters. It is the aspect ratio that matters.
say that ipad uses 4:3 aspect ratio, even though iPad2(1024x768), ipad3(2048x1536) has different screen sizes.

If you are aiming for tablets, use 7 inch or higher.
If you are aiming for universal, make sure you check your game on all aspect ratios
including iOS(4:3, Nexus 9 uses this aspect ratio)

It can run on all devices, just the camera focus could be change a little bit, like some times the display is wider some time closer. you can check it by changing the resolution in game window panel. btw you can set your object’s width and height by getting the resolution of the phone’s screen. from Screen.width and Screen.height.