I'd just like to leave this interesting comparison. And the build quality of Samsung phones is quite good. The nexus has no flex, feels solid, and the back cover stays secure and is no lose. It also does much better than the iphone in drop/abuse tests. I thought this comparison shows how much Apple marks up the iPhone.
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So you're comparing the Nexus [released in Fall/Winter 2011] to the iPhone 4 [released in Summer 2010]? Why not compare it to the 4s? Or would that skew the results YOU want to see?