iFixit's teardown of the Samsung Galaxy S 4G doesn't exactly contain a ton of surprises -- until the very end, that is. Apparently, there's been some talk that Samsung used magnesium instead of aluminum for some of the components, and the best way iFixit could find to test that was to file some dust off the frame and set it ablaze (magnesium's reaction is noticeably different than aluminum). Spoiler alert: it's magnesium. Hit up the link below for the full blow-by-blow account.
