I have a pong case which is supposed to dramatically reduce the radiation your phone emits.

http://www.pongcase.com/

It was awesome for my 4s, but the one on the 5s really sucks. My iphone totally cracked today and Mr. Bee's pong case is totally falling apart. (Side note: I contacted icracked and they come to your house within a couple hours to fix your phone for the same cost as the apple store!)

Thinking about getting this one from Anna Rifle Bond:

https://riflepaperco.com/shop/phone-cases/clear-rosa-everyday-iphone-5-5s-case/

Which one do you have? Do you love it?