iPhone 5

With the iPhone 5, Apple left behind the 3.5″ display every previous iPhone had used, replacing it with a taller (or wider – in landscape mode) 4″ screen displaying 1136 x 640 pixels, the same 16:9 aspect ratio of HD TV. That’s 18.3% more pixels.

iPhone 4S

The iPhone 4S looks like the iPhone 4, but there are a lot of differences under the hood. Hardware includes Apple’s dual-core A5 processor, superior graphics, and support for both GSM and CDMA networks. And to top it off, there’s Siri.

iPhone 4 (CDMA)

On January 11, 2011, Verizon announced that it had reached an agreement with Apple and would soon be offering the iPhone 4 to its customers. Prior to this, the iPhone had been an AT&T Wireless exclusive in the United States.

iPhone 3GS

The iPhone 3G had been a step forward in some areas – especially in adding 3G data support – but in other areas it was no better than the original iPhone. With the iPhone 3GS, Apple took a few more steps forward with a faster processor, a better camera, video capability, and a 32 GB option.

iPhone 3G

One of the biggest complaints about the original iPhone was that it didn’t use 3G for wireless data, instead depending on the far slower – average data speeds between 75-135 Kbps – EDGE protocol. Another complaint was the lack of third-party apps. The iPhone 3G addressed both of these.