A user interface (102) of a portable electronic device (100) includes a plurality of keys (112). The user interface (102) includes a first group of keys representing vowel characters (402), and a second group of keys representing consonant characters (202). The second group of keys is separate from the...http://www.google.co.uk/patents/US7095403?utm_source=gb-gplus-sharePatent US7095403 - User interface of a keypad entry system for character input
