Smartphones have become the most common form of connected computing device in the world. Many people have only one connected device, and due to both cost and convenience, the smartphone is often the chosen device. This is especially true in the developing world, where wireless networks are evolving much more quickly than wired alternatives, which means that the smartphone provides access to not only the Internet but also to communications networks that may otherwise be very limited. The modern smartphone is a fundamental example of a convergent technological device, marrying the functions of a cellular phone and a personal digital assistant (PDA) with a portable music player and a point-and-shoot digital camera. This combination has proven so powerful that the Apple iPhone is now the ...

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