Losing your phone at a festival is one of the easiest things you can do. It's a huge possibility you'll forget it by the food vendor, or that it will fall out of the butt of your skin-tight cut-off shorts or you could drop it after snapping a video of your favourite band. Or, your could be another victim of this guy:
Reinaldo De Jesus Henao was caught stealing over 100 phones at Coachella this weekend. He was booked after a number of attendees realized their phones were gone and they used the Find My iPhone app to help police figure out who was behind the thefts. He was caught right before 1am on Saturday. Impressive.