Hey!
So this might be old news but I just thought of this and it worked for me so I thought I'd share it here.
I only have one android device available right now (samsung s10) but wanted to see how the game scales on other devices with different screen sizes, so I installed android studio and made some different virtual devices. Then when a virtual device is running just drag a debug apk onto it and it will install, next just start the game and see what it looks like.
Maybe this helps someone else who also only has one android device.
Thanks! :)