yeah...I'm sure it's a very small power level, I was mainly wondering how often, because like optoman said. I mean if I keep it in my pocket every waking hour, that adds up to a pretty large dosage of radiation.
I just need something smaller than a pda, with a vibrating reminder to remind me about appointments and stuff. a cell fits the bill, but I don't think I want that radiation- especially since I have a condition that makes it easier for me to get testicular cancer than most people.