Apple’s most important iPhone upgrades over the years

Seven years after its initial launch, the iPhone has come a long way in terms of its feature set.
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Last month marked the seventh anniversary of the launch of Apple's first-ever iPhone, the device that quite literally sparked the smartphone revolution. Since then, the iPhone, while essentially retaining the same shape, has incorporated a ton of features that, when taken together, make the original iPhone look beyond antiquated.

With that in mind, here is a list detailing all of the biggest iPhone enhancements we've seen since the original launched all the way back in 2007.

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