In the legal fine print that comes with your device, the manufacturers provide the following safety protocols: Keep Distance: Instructions state a minimum distance that the device should be kept away from the body at all times. It is important to realise that keeping any device directly against your body will often exceed the maximum allowable radiation limit. Hands Free: Instructions recommend using speakerphone or a headset with the device away from the body. See Show the Fine Print. Car: Vehicle manufacturers warn car drivers about calling inside a metal vehicle, since metal amplifies radiation and microwave radiation levels may exceed the maximum allowable limit. Point of Sale: In 2017 the courts approved new legislation in Berkeley, California. The new legislation gives the public the right to know at the point of sale the SAR value of each mobile phone model. It also tells users to keep devices away from their bodies.