The blocks fall to the left or right side, but the player must rotate the field back to portrait orientation (which is fixed).

The rotation to 90 degrees option is useful for the portrait orientation of monitors.

The stereo speakers are positioned at the top of the device as you hold it in portrait orientation.

The only major application that is designed for portrait orientation is the dialer.

If it's meant for reading and spends any amount of time in portrait orientation, 4:3 makes a hell of a lot more sense.

There were only a few pieces of built-in software, including the home screen, that felt really natural in both landscape and portrait orientation.

It's a bit less comfortable in portrait orientation.

The socket has a slot on the side, to allow the camera to be rotated to the portrait orientation.

It's a landscape-orientation calculator rather than sort of the more traditional portrait orientation.

Another minor inconvenience is the Market's lack of support for portrait orientation.