Ever since Apple released the first iPhone in 2007, it has quickly grown to become popular smartphone on the U.S market. The one thing which made the iPhone stand out from the competition was the fact that it was the first multi-touch capacitive touchscreen smartphone to ever be released. And since the the first iteration of the iPhone, the market for capacitive touchscreen smartphones has grown enormously. Many competitors including HTC, RIM, Palm, Samsung, Motorola and more have since released products which would rival the iPhone. Apple knew that in order to remain on top, they had to make the fourth iteration of their hot selling smartphone much improved, and they did just that with the iPhone 4.