<human>:  Tell me about the history of the smartphone.
<bot>: The history of the smartphone began in the early 1990s when IBM released the Simon Personal Communicator. This device featured basic functions like a calendar, calculator, address book, and e-mail. While it was not the first device to offer these features, its combination of a cellular network and stylus touch-sensitive display earned it the title of "the first true smartphone". Subsequent devices such as the Palm Pilot and BlackBerry offered similar features but with more robust phone functionality. Towards the end of the 1990s, the term "smartphone" was more widely used to describe these specialized devices. The dawn of the 21st century saw the emergence of more advanced smartphones powered by Apple's iOS and Google's Android operating systems. Today, smartphones are pervasive and offer a wide array of features that are used for communication, entertainment, work, and more.