Apple released the original iPhone on June 29, 2007.
The Apple iPhone is 4 years old now. The iPhone changed the way mobile phones work today. It also laid the ground work for the successful introduction of tablets. The first iPhone was still only GSM. It did not have 3G support. This was a big topic back then. The iPhone 3G solved that a year later. The iPhone 3GS was then the first mature iPhone in my opinion. Now we have the iPhone 4 already over a year on the market. It did not have an easy start with the hole antenna gate, but it is unique device with stunning sales.
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Everybody is now waiting for the iPhone 5 coming this fall. The iPhone life cycle has just begun.
Mashable has published a neat infographics offering a look back on the four year history of the iPhone.