We tested popular cellphones for radiofrequency radiation. Now the FCC is investigating. [...

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By Sam Roe

The Apple iPhone 7 was set to operate at full power and secured below
a tub of clear liquid, specially formulated to simulate human tissue.

With the push of a button, a robotic arm swung into action, sending a
pencil-thin probe dipping into the tub. For 18 minutes, it repeatedly
measured the amount of radiofrequency radiation the liquid was
absorbing from the cellphone.


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