I do not have any other devices to test this on, and right now I only have my game looking good in one aspect ratio (16:9). If someone downloads the game onto a phone with a different aspect ratio (say 16:10), will it not fit or will it just crop the screen to make it fit? Thanks.
It’ll make your Camera show in native device’s resolution, unless you stretch it yourself at the start, like Screen.SetResolution(1600, 900, true)
[See here][1]
Any 3D objects will not stretch but the camera will show less on 4:3.
Any GUI elements drawn thru OnGUI or GuiTextures will stretch.
There’s also “Aspect Ratio” option right in your Game Window. Setup whatever you want to see and you’ll see the way it’ll go
[1]: Unity - Scripting API: Screen.SetResolution