Great service, very quick delivery This case does work at diminishing the radiation emanating from my iPhone 13 mini. You may ask - how do i know - who am i? I'm just a guy on the street, but when i leave the phone on my desk with the case flap open, even though it's about a meter away - very soon i start getting a headache, but when i close the case which completely covers the iPhone screen, the headache goes away. Also if i make a call using the iPhone 13 mini, with the case front flap open, after a few minutes talking i start getting a headache, BUT if i close the case flap and talk on the phone - no headache, even if I'm on the phone over 1 hour. Can't give you any "scientific" data, only my experience Warren Adams Edmondson Park, NSW 2174