| 摘要 |
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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