Why my Roguelike 2D graphics are naughty in devices?

Hello, I been worked on a 2D Roguelike game for mobile devices (Just Android & iOS) and when I build and run on an Android phone the grap$$anonymous$$cs sucks! They're too much pixeled and are naughty. And the camera view doesn't are like I've configured, it seems like everyt$$anonymous$$ng are in desorder, but in the editor looks totally normal, even changing the aspect in the Game view to adapt the screen for many resolutions. May I've forgot to set up somet$$anonymous$$ng in the Player Settings or somet$$anonymous$$ng?

Please help!