Apple is considered the leader in the smartphone market. In five years, the company has generated more than $150 billion in revenue from the iPhone family of handsets and accessories, according to research firm Strategy Analytics. More than 100 million iPhones have been sold.

The Cupertino, Calif.-based company clearly doesn't plan to relinquish its standing anytime soon. The iPhone 5 is touted by many as the most innovative iPhone since the original, offering the first re-design of the product since the "squaring" of the iPhone 4. The iPhone 5 marks Apple's first time moving beyond its 3.5-inch touchscreen comfort zone, with the introduction of a lengthened 4-inch screen.

The first member of the iPhone family to divert from 3.5-inch screen, the iPhone 5 boasts a 4-inch Retina display with a resolution of 1,136 x 640 and 326 pixels per square inch. The iPhone 5 also re-introduces the front-to-back manufacturing model that was last seen with the iPhone 3GS. (One wonders if Foxconn, the electronics manufacturer of choice for Apple, had any influence in the change, as front-to-back manufacturing makes for easier assembly.)

Since the introduction of the iPhone by Apple in January of 2007, the handset has been the very definition of "iterative improvement."

The first iPhone, with its multi-touch screen and application-based environment, was considered revolutionary to the smartphone segment. Since that time, there has been five generations of iPhone models, each one improving on the model preceding it. The iPhone 5 is marketed as the most dramatic improvement of any new model, but does it really differ that much from its predecessors?

Click on the photo below to take a look inside the iPhone 5.

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This story was originally posted by EE Times.

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