Abstract: A handheld electronic device includes a reduced QWERTY keyboard and is enabled with disambiguation software. The device provides output in the form of a default output and a number of variants. The output is based largely upon the frequency, i.e., the likelihood that a user intended a particular output, but various features of the device provide additional variants that are not based solely on frequency and rather are provided by various logic structures resident on the device. The device enables editing during text entry and also provides a learning function that allows the disambiguation function to adapt to provide a customized experience for the user. The disambiguation function can be selectively disabled and an alternate keystroke interpretation system provided.

Abstract: A user interface, in accordance with the teachings described herein, is provided for integrating applications on a mobile communication device. An instant messaging user interface may be included for displaying an instant messaging communication that includes an instant messaging contact. An instant messaging user interface menu may be included for displaying a list of commands, one or more of the commands being specific to the displayed instant messaging contact, and the list of commands including a command associated with a calendar application. The user interface may be operable to automatically launch the calendar application in response to a user selecting the command associated with the calendar application. A field in the calendar application may be automatically populated with the instant messaging contact.

Abstract: A graphical user interface for inputting symbols into a handheld mobile communication device having a reduced key keyboard is disclosed. The reduced key keyboard includes a plurality of multi-functional keys and corresponding indicia including keys associated with alphabetic characters corresponding to an array of letters A-Z defined with reference to a standard alphabetic format for arranging said letters on a regular keyboard and an overlaid numeric phone key arrangement, said plurality of keys associated with alphabetic characters numbering fewer than 26. The graphical user interface (GUI) comprises a plurality of views for displaying on a display of the device, each view representing said plurality of keys associated with the alphabetic characters and respective symbols associated with individual ones of said plurality of keys; and a mapping component for selecting a symbol in response to a user input using a one of said plurality of keys associated with the alphabetic characters.

Abstract: A method of performing expedited communication functions on a mobile device includes monitoring the duration-of key press on a keyboard of the mobile device and determining if the monitored duration of the key press is greater than a threshold duration. If the monitored duration of the key press is determined to be less than a threshold duration, then a primary key function associated with the pressed key is activated. If the monitored duration of the key press is determined to be greater than a threshold duration, then an expedited communication function associated with the pressed key is activated.

Abstract: A messaging method in a system including a wireless network, a routing server, and a plurality of mobile stations. A first mobile station has first communications applications and a first PIN and a second mobile station has second communications applications and a second PIN. The method includes sending an invitation including the first PIN from the first mobile station to the second mobile station using one of the first communications applications, and sending an acceptance including the second PIN from the second mobile station to the first mobile station using one of the second communications applications. The method further includes creating first messages including the second PIN and sending them to the second mobile station through the wireless network, and creating second messages including the first PIN and sending them to the first mobile station through the wireless network. The routing server routes the messages based on the PINs.