How to adjust the camera size, depending on the screen size

Hello, i am making a game to android, but i want make the camera adjusts to the ecra of the player. depending on the screen size.

Well, the rendering won’t be affected, you don’t have to do anything to make it render to different screens. I guess you are talking about the UI. If you use the UI from Unity 4.6 you can set the canvas to autoresize and adjust the elements.