How do I make my game fit to all android screen sizes ?

Hi,

I have tried all the options I know like (SCALE INNER , SCALE OUTER , LETTERBOX SCALE , LETTERBOX INTEGER SCALE ) and for all sizes like (1080,1920)(720,1280)(480,854) and more than that but it don't work.

Note: I have tried it on devices like Galaxy note 9 and 8 , Huawei honor 8

"Scale inner" and "Scale outer" both fill the screen completely.

See the tutorial Supporting multiple screen sizes