Yeah the retina display was big at the time, and the 4 as a whole was a monumental jump from the 3GS even if it brought on antennagate. Arguably the 4 was what set the tempo for, sadly, all phones through today with the metal and glass design. For comparison on screen density though, the original Galaxy S by Samsung (released in June of 2010) and the HTC Evo 4G (also released in June 2010) were both 480 x 800.

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