Difference Between iPhone 4 and iPhone 3Gs

iPhone 4 vs iPhone 3Gs

Witch iteration of the iPhone, we see Apple adding more features and raising the ante against those who aim to dethrone them. With the iPhone 4, Apple finally decided to add video calling, which a lot of people greatly missed in the 3Gs, but only with the use of a WiFi network and not over 3G as it was intended to. This is evidenced by the addition of a secondary camera right beside the speaker. Aside from the addition of a secondary camera, the primary camera of the iPhone4 has also been upgraded to a 5 megapixel sensor from the 3 megapixel sensor that you would find on the 3Gs.
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