Mobile device based messaging

摘要

A user interface screen includes names stores in a mobile unit device's address book. In order for a user to send an instant message, the user selects a create message display screen, enters a text message using the mobile unit device's keypad, and then selects a recipient (an instant message name) from the address book user interface screen. The instant message routing server checks availability of recipients (instant message names in the stored instant message name list) and sends the results back to the mobile unit device. In a display area, recipients are indicated as signed on the instant message system, or as being signed off the instant message system.

主权项

1. A method comprising:
displaying on a display of a mobile device at least a portion of a group of users; receiving an indication that a user from the group of users is signed on to a communications system based on performance of a sign-on function: indicating on the display of the mobile device that the user of the group of users is signed on to the communications system; identifying, using at least one processor, a selection of the user that is signed on to the communications system; and presenting on the display of the mobile device a create message display screen for composing a message intended for the selected user.