That's a tough one. My husband and I had seen a reputable news show (Can't remember which one.) that said people are developing tumors where they put their cell phone against their body. But doing a google search on it, it seems no one knows for sure. There are reputable sources saying yes and reputable sources saying no. I get mad at my daughter because she keeps hers in her back pocket or in the front of her waist band. I told her she might think that's a good idea until they're cutting a tumor out of that butt she's so proud of. I about freaked out on her a couple of weeks ago when I saw it in her waistband again. Her grandmother had cervical cancer. I tell my daughter maybe the phone doesn't cause cancer, even though I think it does, but why risk it when she might already be at risk. I know I'm about to sound like a conspiracy theorist but my fear is even if they do find that it causes cancer the phone companies will pay huge money to keep that quiet. And I believe the whole world can be bought.