I'm not entirely convinced of the health risks that people claim cell phones pose. Like everything else, I think there's a bias by the groups reporting negative findings and a tendency to exaggerate. That being said, I still don't think my body really expects to have a radio transceiver broadcasting all day from my pocket.
Lately, I've changed my habit from walking around all day with a phone in my pocket to only carrying it when I'm on the move. If I'm at work it now sits on my desk (plugged in and maintaining a full charge on my employer's dime). If I'm at home it sits in my room plugged in. When I'm driving it tends to be put in my cup-holder (once again plugged in and charging).
Changing my phone habits has two main effects: 1) keeping my battery almost constantly at a full charge and 2) reducing the physical contact with my phone from probably 10-12 hours per day to an average of maybe 2 hours per day. Some may say that 2 hours a day is still too much, but it's still a time reduction of about 80%. And to me, that seems like a good thing.