Alphanumeric keypad connected to mobile telephone has keyboard mounted e.g. on rear of mobile telephone housing

摘要

The keypad (1) is built separately into a housing part (2) and mounted on one of the sides, particularly the rear side of the mobile telephone housing. The housing part including the keypad may be foldable via hinges. Several touch-screen display panels may be folded out on hinges. A keyboard may be connected to the front keyboard via a contact when it is folded out.