Consider this information:
Note: Turning off "cellular data" tip from EMS Safety Zone: A friend of mine told me that turning off the "cellular data" option would create much less radiation, and he asked me to bring my RF meter over to check this out. I brought my microwave meter over to his home today and low and behold, he was right!
If you own an iPhone, there is an option in the settings menu referred to as "cellular data." If you DISABLE the following options: WIRELESS, BLUETOOTH, and CELLULAR DATA, guess what? ... the phone will still receive and make calls, will still send and receive texts, but there is no radiation coming out of the phone until a call is activated. I verified this with the microwave meter. And even when making or receiving a call, the radiation was much lower then when the wireless and bluetooth options were enabled as well.
Thus, with the "cellular data" option disabled (and of course the wireless and bluetooth disabled as well), you basically turn the iPhone into one of the old-style flip phones, as it is no longer constantly exchanging data with local cell towers and pulsing large amounts of dangerous radiation through your body while it does this.