Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, relating to changing device settings based on an orientation or motion of a mobile device. The method includes receiving a user input, determining that the mobile device was oriented in a first orientation when the user input was received, selecting a first device setting or service request parameter that affects a mobile phone application or a web service experience and that are associated with the first orientation, providing, for output at the mobile device, a first response to the user input based on the first device setting, after providing the first response to the user input, determining that the mobile device has been reoriented in a different, second orientation, selecting a second device setting, and providing a second response to the user input, or to a revision of the user input, based on the second device setting.