Smartphone - Wikipedia, the free encyclopedia
1 History 1.1 Early years 1.2 Forerunner 1.3 PDAs 1.4 Mass adoption 1.5 iPhone and Android 1.6 Recent technological developments 1.7 Future possible developments 2 Mobile operating systems 2.1 Android 2.2 iOS 2.3 Windows Phone 2.4 BlackBerry 2.5 Firefox ....