Speaking generally, both of these devices are fairly powerful smart phones. Although the Galaxy S2 is newer on the market and the iPhone 4 is roughly one year old, the two phones are still very comparable. This review will break down the difference in the screen, software, processors and other hardware, as well as the usability of both devices. Design: The Galaxy S2 has the following dimensions: 125 x 66 x 8mm and weighs in at just over 115 grams. ...