Patent ID: 8301200

Claim:
A mobile communications device, comprising: a set of physically depressible keys that includes keys for all 26 letters of the English alphabet, (1) wherein said set of keys is made up of three rows of keys that include a first row, a second row, and a third row, and (2) wherein said second row includes a plurality of keys situated between a left-most key and a right-most key; and computer-readable media that includes a set of computer-executable instructions embodied thereon that, when executed, cause at least a portion of the set of keys to be configured in a specified configuration incident to receiving input from any key (hereafter “a certain key”) of the second row other than said left-most key or said right-most key, the specified configuration including, (1) the certain key is mapped to the Arabic numeral “5,” such that when said certain key is pressed, a “5” is received as input into the mobile communications device, and (2) a set of contiguous keys that immediately surround said certain key are respectively mapped to Arabic numerals “1” through “9,” except for the Arabic numeral “5,” which was already mapped to said certain key.