How to use the camera as Potrait and stretch it on all mobile devices?

I see there is a constraint aspect radio option that I have tried using, also setting its aspect radio to 0.5625 to have potrait.
But when launching the game on an Android device the game launches in Landscape and have 2 ugly bars at each side that make the screen look small.

Is there any way to set the camera so it looks THE SAME on all devices regardless the model?

Since no one helped, I hereby document what I did:

Apart of setting up the camera aspect radio to 0.5625, I found an option in Settings->Android called orientarion, there you have several options and one of them is Potrait.

About stretching to full screen:
I just understood that the only way there will be black bars at the sides of the screen as in the emulator (like using the iPad configuration) will be if the device doesnt have the same aspect radio which will hardly happen if you are packaging per OS type.

There you go.