LG G5 went on sale just yesterday and it was inevitable for the flagship to pass through various torture tests for the cameras. The G5 got scratched, burnt with a lighter, and then bent for the public to enjoy. As expected the LG G5 doesn't bend easily as it's actually a chunk of metal, except for the whatever accessory is inserted within the Magic Slot - this will surrender rather easy. The scratch test revealed the LG G5 is actually covered by a thin layer of plastic. This process of applying small color particles on metal surface is called microdizing and allows for hiding...
Source: http://www.gsmarena.com/lg_g5_tortured_for_the_public_it_turns_out_quite_sturdy-news-17574.php