Christian Kraft has worked 18 years in the mobile phone industry, for three different companies. Fourteen of those years were with Nokia. His focus has always been on creating user interface and user experience innovation. He is responsible for many of the innovations that made Nokia successful, creating over 100 patents relating to user experience during his fourteen-year tenure with that firm. He is the inventor of threaded SMS chat, a feature that debuted in the highly-successful Nokia 3310 handset. He is also inventor and designer of the first-ever game for a mobile phone.