In this disturbing study, chicks exposed to mobile phone radiation had a 75% miscarriage rate. Chicks not exposed had only a 16% miscarriage rate. Now a chick is much smaller than we are, so we would have to use a mobile phone the size of a small elephant to get the same relative intensity of exposure. However, in this study their exposure was only for 21 days and our exposures are much longer than that. While this study certainly is far from being conclusive for humans, nonetheless it is very disturbing and if you are pregnant, I would recommend keeping your cell phones on airplane mode or off entirely. Turn them on when you need to make a call … that’s what I do. If you absolutely have to be reached then get a pager and keep it away from your belly.
 
Radiats Biol Radioecol. 2003 Sep-Oct;43(5):541-3.