Why Camera2 Supported Preview Size Width Always Bigger Than Height?

I'm working on a project which using camera2 API. When I get the list of supported output preview size using: StreamConfigurationMap map = characteristics.get(CameraCharacteristics

Solution 1:

The camera on phones is traditionally built for landscape orientation of the device. We use rotation of 90° to display camera frames correctly when the device is held in portrait orientation.

Here is the detailed explanation: https://developer.android.com/training/camera/cameradirect.html#TaskOrientation