How strong are the radio waves from a mobile phone?
The quality of the mobile coverage is the deciding factor when it comes to how much radiation your mobile phone emits. The SAR that is described in the above question (2 Watt/kg) is applicable where the mobile coverage is weak, and the mobile signals are transmitted at maximum strength to reach the antenna. In most situations, the mobile phone will reduce its transmitting power significantly, as the nearest mobile antenna is likely to be fairly close. If the coverage is excellent, the mobile phone may actually reduce its radiation by as much as 99.9 per cent, i.e. down to 1/1000th.
