So I'm researching phone use while I'm in Canada, and I get a crash course on health risks from cell phones, bluetooths, and microwaves from cell phone transmission towers.
Based on my research, I'm buying a wire headset with a blue air tube that runs between your ear piece and phone, thereby breaking up radiation that otherwise travels directly into ear.
Intuitively, I have believed there are risks to using a cell phone or even holding one close to one's body.
Before I bought my Blackberry, which I do love using, I had a cell phone with speaker function, which is recommended. No, you don't have privacy but yes it's better than having a phone, wire, or bluetooth directly on or in your ear and next to your brain. Here's a good video on subject. You might also learn more about electromagnetic radiation by clicking here.