Do not keep a mobile phone beside the bed at night switched on, because even when on stand-by it is in contact with the nearest phone mast and emits radiation at regular intervals
Do not carry your phone directly on your body, even on stand-by, and do not use it less than one metre away from another person, in order to reduce the effect of ‘passive’ radiation.
If you are using a cell phone for communication, try to keep the cell phone away from the body as much as possible. The amplitude of the electromagnetic field is one fourth the strength at a distance of two inches and fifty times lower at three feet.
Whenever possible, use the speaker-phone mode or a headset, which has less than 1/100th of the electromagnetic discharge of a normal cell phone. Use of a hands-free ear piece attachment may also reduce exposure.
Avoid using your cell phone in public places, like a bus, where you can passively expose others to your phone’s electromagnetic fields
When the signal is weak or moving at high speed ,avoid using your cell phone. Such as: while traveling this automatically increases power to a maximum as the phone repeatedly attempts to connect to a new relay antenna
Make use of protective items to shield yourself from radiation, such as a metal phone carrying case, protective anti-radiation fabric and veils, metallic foil wallpaper, anti-radiation paint, etc, all which have been proved to be effective.