SAR rate: the Specific Absorption Rate for Fairphone 2
The Specific Absorption Rate (SAR) of the Fairphone 2 is:
- SAR10g: 0.65 W/kg for the head
- SAR10g: 1.1 W/kg for the body.
In compliance with new reporting methodologies, the SAR levels shown under the Specific Absorption Rate (SAR) section in the printed version from before October 2017 of the user guide, are no longer applicable. From October 2017 on, this is updated in all printed documentation.
How is it calculated?
SAR is calculated for two areas: the head and the rest of the body. During testing, the phone’s radio is set to its highest transmission level for each frequency.
- For the head rating, the phone is placed directly next to the head to simulate actual calling behavior.
- For the body rating, the phone is positioned 0.5 cm away from the body.
In summer 2017 the new RED legislation (Radio Equipment Directive) has come into force; mostly replacing the (older) R&TTE Directive. In this new directive and the standards related to it, a new way of measuring SAR for mobile phones is required.
For the measurement at the head, the lab applied a multiplying factor on the old measurement to comply with the new standard.
For the body measurement, the separation distance used in the test is now 0.5 cm.
To avoid confusion, there has been no hardware change that leads to this increase but a change in the way of measuring.
How can I limit the SAR exposure?
The SAR of the Fairphone 2 is relatively low.
Even then, carry your phone in a bag or something similar to keep it 1 cm away from your body. This ensures that exposure remains at or is below the as-tested level. Also, you can use a hands-free headset.
What is the SAR?
SAR stands for Specific Absorption Rate, which is a measure of how much radio frequency (RF) energy is absorbed by your body when using an electronic device like a mobile phone. In the EU, SAR limits are governed by the European Committee for Electrotechnical Standardization (CENELEC).
Here, any mobile device with a SAR of 2.0 Watt per kilogram (W/kg) or less, averaged over 10 grams of tissue, is considered safe for consumer use. There is a lot of research out there about the effects of exposure to radio frequency, but many remain inconclusive. If you would like to research more, consult the World Health Organization.