3. iPhone
Originally unveiled by Steve Jobs at Macworld in January of 2007, the very first iPhone model was a true revolution in the era of the smartphone. Not only did the iPhone set a new standard for smartphone design, functionality, and ease-of-use, but, having gone on to sell approximately 6.1 million units within the first year of its launch, the iPhone set the stage for many, many more generations to come. Although the original models shipped with just 4 GB or 8 GB of onboard storage for a whopping $499 and $599 outright, the devices have become more affordable thanks in part to carrier subsidies and monthly installment-based pricing models that have put the device in the pockets of hundreds of millions of users around the world.
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