An elongate handheld wireless communication device that is cradleable in one hand during text entry. A display, key field and trackball navigation tool are located on a front face of the device. At least some keys of the key field are arranged in key-columns and each of the key-columns is vertically...http://www.google.de/patents/US20070254698?utm_source=gb-gplus-sharePatent US20070254698 - HANDHELD WIRELESS COMMUNICATION DEVICE
