A smart phone is a mobile phone that offers advanced computer-like functionality beyond regular phones, though there is no single definition. The first smart phone was the Simon in 1992, while the Nokia 9500 in 1996 was an early color-screened model and first WiFi device. Most modern smart phones use identifiable operating systems and allow third-party apps. While smart phones enhance convenience, they may also foster overdependence on constant connectivity and shorten attention spans, especially when multi-tasking like streaming TV while driving. However, smart phones also enable constant access to personal computers and communication tools, as well as safety features like GPS.