Viewing orientation of a display of a mobile device is changed by automatically tagging a change in a dynamic parameter of the device as intended or unintended based on a following change in a dynamic parameter of the device, the following change occurring within a predefined time period. The tagged change is used to train a detector to determine when a change in a dynamic parameter of the device implies a user intended change of viewing orientation. The trained detector is used to provide a determination of intention and a change of viewing orientation of the display is affected based on the determination.