I read and hear about health issues when using cell phones. With the iPhone loaded with extra things such as GPS, how does this affect our health? Does the iPhone have a low or high SAR? How about the RF? Read this link: http://www.powerwatch.org.uk/action/reduce_phones.asp Don't want to get cancer later in life because of using my iPhone. Any safety info on this phone would be great to ad here for all of us to know. Thanks.