How to change the camera rotation/orientation?

Right now I have a mini webcam application I made myself, but the camera orientation doesn’t seems to be correct at all. I have uploaded a picture. I have scaled down the image size in order to get it upload successfully. As you can see, the phone is actually in a Portrait position, but the camera is looking the object with landscape angle. How can I actually solve this?![1]

A) Change the device orientation Edit → Project Settings → Player → Resolution and Presentation → Default Orientation

B) When you actually attach the texture to something, just flip it. If you are using draw texture -functionality, change the coordinates. If you attach the texture on a quad, rotate it.