Expandable system architecture comprising a handheld computer device that dynamically generates different user environments with secondary devices with displays of various form factors

A method for using a handheld device with a secondary device that comprise a second display, wherein the handheld device comprises a user environment and a display that displays the user environment, comprising:

• auto-detecting a configuration of the secondary device over an interface;
• generating at least a part of a different second user environment based on the configuration of the secondary device;
• transmitting the second user environment over the interface;
• and
• displaying at least a part of the second user environment on the second display.

A handheld device for use with a secondary device comprising:

• a display;
• and
• at least one processor, wherein the at least one processor executes an operating system that enables a user environment that is at least partially displayed on the display and is configured to:
• auto-detect a configuration of the secondary device that comprises a second display;
• provide a different second user environment based on the configuration of the secondary device, such that the handheld device transmits the second user environment over an interface;
• and
• display the second user environment at least in part on the second display.