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== Pitfalls ===The iPhone is a smartphone designed by Apple Computer Company. The iPhone line runs Apple's iOS mobile operating system. The first generation iPhone was released on June 29, 2007. The user interface is built around the device's multi-touch screen, including a virtual keyboard. The iPhone has Wi-Fi and can connect to cellular networks. The iPhone Upgrade Program is a 24-month program designed for consumers to be able to get the latest iPhone every year, without paying the whole price up-front. The program consists of "low monthly payments", where consumers will gradually pay for the iPhone they have over a 24-month period, with an opportunity to switch (upgrade) to the new iPhone after 12 months of payment have passed. Once 12 months have passed, consumers can trade their current iPhone with a new one, and the payments are transferred from the old device to the new device, and the program "restarts" with a new 24-month period. == Pitfalls ==The iPhone battery is sealed inside the phone and not consumer replaceable. It is a major technical process to make a battery change if the battery goes bad, and they do go bad. Battery life is not very good on the iPhone as another minus. The battery is not even 2000 mAh. Also, you need a special Apple charger to recharge the phone.