After only about a decade, smartphone technology is so successful that businesses and their employees have trouble imagining a day without them. Besides making phone calls, nearly all smartphones today can natively provide directions through GPS, take pictures, play music and keep track of appointments and contacts. Through the installation of apps, the list of possible smartphone uses multiplies by tens of thousands and grows longer everyday.

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Old school cell phones can call and text. While this can get your message across, smartphones allow you multiple ways of communicating. Not only can they call, text and IM, they give you access to email, video calling and video conferencing. You can also remain connected through social networking sites like Twitter, Facebook and LinkedIn.

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At first, Web browsing tended to occur at a desk in an office, where a wire could reach a PC. Wireless access and laptops moved the Web to pretty much anywhere in the house or office, but smartphone technology, including broadband wireless, has sent the Web onto the subway, into cars and to the park -- wherever there is cellular coverage. What's more, the latest smartphones can display nearly as much of the Internet as PCs, including games and streaming high definition videos.

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he late twentieth-century saw an explosion of computer applications. The early twenty-first century brings hundreds of thousands of smartphone apps. The sensors built into the smartphone as well as its portability and programmability have made it a device with almost limitless applications. Beyond the tons of games and productivity apps available, health and fitness apps track the miles you've run, the calories you've consumed and even your current heart rate. Internet radio and podcasting apps put you in touch with whole new worlds of audio. Compass apps, leveling apps and flashlights provide handheld utilities. Apps that let you paint, modify photos or create music tap into your creativity.

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