I played with the app a bit, while being suspicious I thought I would entertain the idea. Maybe its not cosmic rays (well those would mess up your DNA would they not?) but still I could fathom some EM field coming from the screen that may penetrate non mental parts of the phone.

Anyhow after recognizing the wire for the headphone jack I simply plugged something in to see if that showed up in the image. It did not, so its not a live image. Maybe doing an experiment yourself is a better learning experience that talking to know-it-alls on here.