The Galaxy S III is Samsung's new flagship smartphone and it's finally broken cover at the company's stand-alone Mobile Unpacked event here in London. With a steady stream of fakes, outright leaks and even event rescheduling, Samsung's claimed almost crazy levels of interest for its new smartphone. Weighing in at 133g (4.7 ounces) and whittled to 8.6mm at its thickest, the rounded-off design has more than a little bit in common with its Galaxy Nexus cousin. O