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How do we know what is the SAR level from the phone?
It is expensive and complex lab testing, in which the cell phone is operated on maximum power and controlled next to a Phantom model. Using tiny radiation measures there is head scan and they measure the level of radiation in each spot. The measurement should take place according to strict international standards. Today there are two standards, American and European and they give different results. A less accepted method for determining SAR levels is by complex computer simulation. We stress out: this measurement can not be done by regular radio measuring devices.
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