The iPhone 4 is now boxier, with the rear side now flat, instead of rounded. It will keep the 3.5-inch display diagonal, but will quadruple the pixels to 640x960, making it the highest-resolution screen on a smartphone to date.

Sep 12, 2011 ‎Tangi Quick Videos on the App Store ‎Read reviews, compare customer ratings, see screenshots, and learn more about Tangi Quick Videos. Download Tangi Quick Videos and enjoy it on your iPhone, iPad, and iPod touch. iPhone - Apple

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Jun 29, 2010 Compare Every iPhone Model Ever Made (With iPhone 11) Nov 26, 2019 iPhone 4 review - YouTube

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Compare Every iPhone Model Ever Made (With iPhone 11) Nov 26, 2019