The iPhone 4 was the most impressive iPhone ever when launched, and a big step up from the iPhone 3GS.
The iPhone 4's 960x640 Retina Display was a revelation when it was launched in 2010. It's got 326 pixels per inch, and we're talking tiny pixels, only 78 micrometers wide.
The 3G reception disappearing problem is gone now with newer builds (although Apple would never admit to it being a problem) and you can finally get the darned thing in white.
But the big win for the iPhone 4 is the fact it runs so much better in the new iOS 5 - it's faster and the battery lasts longer, with a whole heap of functionality making it feel like a brand new phone.
The Retina Display, especially, is hands-down one of the clearest, most enjoyable screens we've seen on a handheld, and the sheer amount of technology packed into the device might no longer be surprising, but it's still worth a gander.
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