I have an EMF meter that measures electric and magnetic fields. When I place the meter right up to the smartphone I get a reading, but that is when WIFI is active by the looks of it. Moving the meter just a few millimeters away and there is no reading at all. Here is my phone streaming Pandora.
Speaking of "radiation..." You can buy an ion tube foir a smartphone and have a poor mans Geiger counter. Even have UV and EMF detectors for phones as well.