What is SAR?
When electromagnetic waves are received and transmitted there is a loss of some per cent and this lost percentage of electromagnetic waves is absorbed by the tissues around it. SAR value is the rate at which the body absorbs this lost electromagnetic waves. Phones contain radio transmitters and receiver in order to operate on the wireless network. So they emit radio waves, which are carcinogenic. Although as noted earlier, the intensity of these radio waves deems them harmless.
All the new designs of mobile handsets shall comply with the SAR values of 1.6 W/kg averaged over 1 gram of human tissue w.e.f. 1st.Sept. 2012.
--Department of Telecom, Govt. of India
Image from https://dot.gov.in/sites/default/files/advertisement_0.pdf
Department of Telecom, Govt. of India
What is SAR value in Samsung phones? [Info from Samsung site]
SAR stands for Specific Absorption Rate which is the unit of measurement for the amount of RF energy absorbed by the body when using a mobile phone. Although the SAR is determined at the highest certified power level in laboratory conditions, the actual SAR level of the phone while operating can be well below this value.
This is because the phone is designed to use the minimum power required to reach the network. Therefore, the closer you are to a base station, the more likely it is that the actual SAR level will be lower.
Image Credit: Samsung Site from above
click here to know the SAR value of your phone.
check your phone's SAR value [other way]
-- On your phone open the dialer or phone app.
-- Now dial *#07# in your phone.
This will show the you the SAR measurement of your device as specified by the manufacturer.
how much SAR is better?
Lower is better
Lowest : Samsung Note 8 0.17 W/kg
Highest: Xiamo A1 and OnePlus 5T
(Usually Big Brands have low SAR value)
At the same time, you can limit the exposure phone radiation by using earphones with mobile when you are talking and limiting the usage of mobile devices. Also, usually bigger brands tend to have phones with lower SAR value.
FAQ
Will your phone give you cancer?
So, the indications are that they don't. Most of the research that has been carried out so far hints that phones do emit radiation because of the radio waves but it is not strong enough to damage DNA. But with that said, the current wisdom regarding smartphones and cancer is based on the fact that so far no direct link has been found yet between cancer smartphones. Yet. This is the key word. It is known that phones are carcinogenic. It's just that radiation from them is not strong enough to fry DNA.
The key question, however, now becomes just how strong is the radiation coming from your phone. Every electronic device emits a small amount of non-ionizing radiation measuring around few REMS and the amount absorbed by body between a specific time period is known as SAR value i.e Specific absorption rate (SAR).
In simple words if you want to know how much radiation your phone is putting out, you need to figure out its SAR value.
Video: (From Samsung Site)
