| 摘要 |
<p>A mobile device 500 comprises a display portion 502 including a display screen, a first keypad portion 501, a second keypad portion 502, and at least one input device 508, 510-524, 531-544 associated with at least one of the first keypad portion 501, the second keypad portion 502, and the display portion 504. The first and second keypad portions 501, 502 are independently rotatably coupled to the display portion 502 to provide a plurality of operational configurations for the device 500. The first keypad portion 501 may be positioned on an upper level of the device 500 and the second keypad portion 502 may be positioned on a lower level of the device 500, with the display portion 502 being positioned in the middle of the device 500. The first keypad portion 501 may be superimposed over at least part of the display portion 502.
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