This app provides detect value and for your reference.
In 2011, International Agency for Research on Cancer (IARC) classified mobile phone radiation as Group 2B - possibly carcinogenic. (Mobile phone radiation and health)
-From Wikipedia

Phone has radiation to person body and its radiation amount will increase several times when we close to it with distance even less than an inch! is it exaggerated?
This tool will measure it approximately and help you to have a clear recognition.
- three different style of show, cool, vivid
- funny emotions corresponding with different degree of radiation