Use the speaker option on your mobile handsets or if you have a choice dial the number on landline phone, says the precautionary guidelines for mobile users by the government.

The list advises mobile users to keep a distance between the body and the phone by either using the speakerphone option or headsets.

It also suggests limiting the length of calls and using text instead of voice.

"Use text as compared to voice wherever possible...Or if you have a choice, use a landline, not a mobile phone," the guidelines say.

It added that consumers should make calls from a location where signals are strong.

"If the radio signal is weak, a mobile phone will increase its transmission power. Find a strong signal and avoid movement, use your phone where reception is good," it said.

Also, the government also advised that wearing metal framed glasses or having wet hair should be avoided while making a call as "metal and water are good conductors of radiowaves".

Also, when the phone is turned on, it should not be carried in the breast/chest or pant pockets, as when a cellphone is on it "automatically transmits at high power every one or two minutes to check network".

Also, people having active medical implants should preferably keep the cellphone at least 15 cm away from the implant.

The government also said revised mobile standards will come into force from tomorrow which say that the operators should reduce the emission from mobile towers to 1/10th of the current standards.

For mobile handsets, the government has reduced the absorption levels to 1.6 watt/kg averaged over one gram of human tissue.