Well, commenter Downpuppy’s prediction of a burner phone was not too far off the mark!  Good try! But sly Mark really threw his battery charger phone case (Apple seems to charge around $99 for theirs).  Not necessarily a cheap throwaway, its weight might fool the cop for a second or two, until he sees it’s just a shell with a battery pack. So Mark probably shouldn’t be brandishing his real phone (panel 3), as if he is doing a TV commercial for Apple. And yeah, Happy, the transit cop probably will like that “fancy” case, either for his own phone or to resell on eBay or Etsy.