SAR Stands for "specific absorption rate" basically the amount of radiation a human body will absorb from a cell phone. The lower the rate the less radiation will be absorbed.
There are basically 2 different standards which are :
Indian Standard :
The SAR limit for mobile phones used by the public is 1.6 watts/kilogram (W/kg) Averaged over one gram of body tissue.
North American Standard :
The SAR limit for mobile phones used by the public is 1.6 watts/kilogram (W/kg) averaged over one gram of body tissue.
European Standard :
The SAR limit for mobile phones used by the public is 2.0 watts/kilogram (W/kg) averaged over ten grams of body tissue.
Australian Standard :
The SAR limit for mobile phones used by the public is 2.0 watts/kilogram (W/kg) averaged over ten grams of body tissue.
Japan Standard :
The SAR limit for mobile phones used by the public is 2.0 watts/kilogram (W/kg) averaged over ten grams of body tissue.
Korea Standard :
The SAR limit for mobile phones used by the public is 1.6 watts/kilogram (W/kg) averaged over one gram of body tissue.
New Zealand Standard :
The SAR limit for mobile phones used by the public is 2.0 watts/kilogram (W/kg) averaged over ten grams of body tissue
Sri Lanka Standard :
Federal Communication Commission (FCC) of United States recommends the SAR limit of 1.6 W / kg in 1 g of tissue (the ICNIRP recommendation may suite for Sri Lanka, as the mobile communication services are based on European technologies).
Bangladesh Standard :
The SAR limit for mobile phones used by the public is 2.0 watts/kilogram (W/kg) averaged over ten grams of body tissue.
Nepal Standard :
The SAR limit for mobile phones used by the public is 1.6 watts/kilogram (W/kg) averaged over one gram of body tissue.
In order to compare relative radiation of different mobile phones, you can only compare phones using the same standard of measurement.
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