iPhone 4

Two years later came the iPhone 4, a year after the release of the iPhone 3GS, and it was well-received across the world for its crazy fast speed, a speed that had never been seen before on the old mobile. Apple introduced faster speed, bumping up both the CPU and the phone’s memory to make it faster. Other than this, its design was still pretty similar to its two predecessors, except for a few features.

It was the first iPhone to run on an Apple processor, the Apple A4 and updated features included a better-quality camera, up from 2MP to 3MP, and 480P video. This worked wonders in drawing people to the new release, and the phone was one of the best-selling phones of its era, selling millions, for the same price as the iPhone 3G.