Mobile technology has the potential to revolutionize how physicians practice medicine. From having access to the latest medical research at the point of care to being able to communicate at a moment's notice with physicians and colleagues around the world, we are practicing medicine in a technological age. During recent years, many physicians have been simultaneously using a pager, cellular telephone, and personal digital assistant (PDA) to keep in communication with the hospital and to access medical information or calendar functions. Many physicians have begun replacing multiple devices with a "smartphone," which functions as a cellular telephone, pager, and PDA. The goal of this article is to provide an overview of the currently available platforms that make up the smartphone devices and the available medical software. Each platform has its unique advantages and disadvantages, and available software will vary by device and is in constant flux.