iPhone users in the U.S. - additional information
There will be a projected 222.9 million smartphone users in the United States in 2017 and Apple looks to hold on to its considerable market share with over 90 million of users estimated to own an iPhone in 2016. This places Apple’s iOS (operating system) second in the market behind only the Android Operating System, which is projected to have 107.7 million American users in 2016, almost 36 percent of the country's entire population.
However, the iPhone remains the top-selling individual phone of any kind in the U.S., with unit sales of the brand reaching 212 million in 2016. Overall there are eight generations of iPhone model, each of which are accompanied by one of the eight major releases of iOS. The first iPhone was notably different from other smartphones at the time because the user interface is built around the device’s multi-touch screen including a virtual keyboard, rather than the need for a stylus, keypad, or separate keyboard.
Additional functions on the smartphone can be enabled by downloading application programs, or apps, from the phone’s application distribution platform, which in this case is the App Store. As of March 2017, the App Store offered approximately 2.2 million apps developed by Apple or Third Parties and is thus ranked as the world’s second largest mobile software distribution network of its kind, with Android’s Google Play marketplace holding the number one spot. The Apple App Store looks to remain one of the biggest app platforms with Apple announcing in September 2016 that a total of 140 billion apps had been downloaded from its platform.