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DAS: 5G smartphones are compliant, according to the ANFR

It was the fear of many opponents of 5G that the level of radiation would be too high for humans. Fortunately, according to the first findings of the ANFR, these fears are unfounded.

The national frequency agency (ANFR) has published an initial report on its SAR (specific absorption rate) checks on 46 smartphones released in France since the start of the year. 13 of them are 5G models and the good news is that these have been found to comply with the legislation.

DAS limb and DAS trunk

As a reminder, the DAS makes it possible to quantify the energy transported by electromagnetic waves and absorbed by the human body. The maximum limit authorized by the European Union is 2 W / Kg for the trunk SAR, and 4 W / Kg for the member SAR. Of the 46 devices measured, only two showed levels that exceed these values, these are the Heyou 40 and 60 distributed by Bouygues Telecom.

The software of these two models has been updated in order to respect the authorized level. The ANFR did not find any problem with exceeding the maximum limits for the 13 5G smartphones, even if the agency noted average increases of 0.4% for the trunk DAS and of 1.8% for the member DAS.

How to explain these increases (after all modest)? The current 5G in the 3.5 GHz band requires the phone to use two networks simultaneously, the 4G network and the 5G network (NSA mode for “non standalone”). The additional 5G contribution is very low and only appears when the 4G and 5G antennas in the phone are co-located.

On average, the measured value of trunk SARs for the 44 compliant terminals is 0.979 W / kg (with levels varying from 0.439 to 1.80 W / kg). The average value for limb SAR is 2.263 W / kg, with levels ranging from 1.3 to 3.89 W / kg.

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