The National Frequencies Agency (ANFR) has published last week the first “member” SAR measurements carried out on 27 telephones. You didn’t understand anything? SAR is the specific absorption rate, a measure indicative of the amount of energy conveyed by electromagnetic waves emitted to the user by a device.
Until now, SAR has been measured at the level of the head, with the phone glued to the ear, and the trunk, with the device 5 mm away. A third measurement is now taken with the phone stuck to a limb, at zero distance, therefore. This measurement corresponds to a phone held in the hand or carried in a trouser pocket or an armband. The regulatory limit is set at 4 W / kg, ie twice as much as for head SAR and trunk SAR.
ANFR checked a first series of 27 phones available on the market (there are a handful of basic and flip phones in the set). Good news, they all comply with the regulations.
The device with the lowest member SAR is the Huawei Y6s (1.04 W / kg) and the one with the highest is the Wiko View 4 (3.84 K / kg), but it is therefore in the nails being less than 4 W / kg.
Only one iPhone has been tested so far, it’s the 2nd generation iPhone SE, and it has the second highest measurement (3.82 W / kg). As with other phones, the ANFR has published its complete technical analysis.
ANFR will increase its DAS checks next year by examining 140 smartphones, especially 5G models. Exceedances of regulatory SARs are rather rare. The Sony Xperia 5 is the latest to have grilled the fire : his trunk SAR had been measured at 2.64 W / kg. A software update reducing the power brought it down to 1.13 W / kg.
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