I wouldn’t know personally because I basically use two plastic cups with some string attaching them for all my not-in-person communication, but I hear people with smartphones spend a lot of time and money trying to find the perfect case to protect and customize their technological doohickey.
There’s a lot to consider, after all: Will others enjoy the design as much as you do? Does the case affect the overall weight, size and shape of the phone to an unacceptable degree? Can you still fit it in your pocket after you snap the case on? Will people think you’re a creepy weirdo based on your choice of case? These are all questions normal smartphone users ask themselves.