While there are lot of non-free solutions to eliminating the negative aspects of cell phone radiation, here is a free one for you guys...
http://freeshield.net/
Cory Herter of
www.wishforlove.com is a friend of mine who made these. I highly recommend using them.
The "not free" option I have the most confidence in is
http://www.biogeometry.com/english/biog.php, scroll down to "BioGeometryŽ Mobile Phone Energy-Balancing Sticker"
I have taken several biogeometry courses and they are just plain awesome. Printed stickers of various sacred geometry shapes are almost as effective, so the free option will work just fine unless you feel the same odd effects after using your phone.
By the way, the fact that you can consciously sense the negative effects of using a cell phone is great news - most people are not sensitive to be aware of these subsconscious stress responses.
Enjoy!