So I found this s4 for sale for a reasonable price. There are no Samsung logos on the phone so that kind of worries me but the seller claims its a I9500 model. The phone really doesn't look deformed like most of the clones do so I'm kind of stumped. Can I go into settings then about device and look for clues to this phone being a clone? I only have these pics he posted in the ad. What do you guys think?