What is the SAR level in the phone / smartphone?

SAR (from the English Specific Absorption Rate), the specific absorption coefficient of electromagnetic energy is an indicator that determines the energy of the electromagnetic field absorbed in the tissues of the human body in one second. These indicators also measure the harmful effects of mobile phones or smartphones on the human body. Therefore, this parameter can be found in the characteristics of mobile devices.

It is interesting that science has not fully figured out how radiation from a mobile phone or smartphone affects our body, respectively, no one can provide accurate data. Nevertheless, in Europe it is believed that the specific absorption coefficient of electromagnetic energy should not exceed 2 W / kg for 10 grams of tissue – this is the intensity with which a smartphone or phone can emit radiation in a talk mode when it is near a person’s ear. In the USA, a different measurement system is used – no higher than 1.6 W / kg for 1 gram of tissue.

Another feature – the SAR value is determined when the phone or smartphone is at full power. If we talk about ordinary life, then the power of the transmitter depends on the conditions in which the user is. So, if it is in a place where excellent communication quality, the less power. However, there are other situations. In addition, the SAR level also depends on other circumstances..

Is it worth paying attention to the SAR level when buying a new smartphone or phone? As it was written above, scientists have not fully figured out the effect of radiation from mobile gadgets on the human body. Nevertheless, it is recommended to take into account the SAR indicator – the lower it is, the better for human health.

You can specify the SAR level in the characteristics of the device. Take, for example, the Samsung Galaxy A5 (2017) SM-A520F. Here are its specifications on Yandex.Market:

As you can see, the SAR level is indicated here – 0.52. This is a very good indicator, although not a record one. At Samsung Galaxy S7 Edge, it is only 0.264 and with this indicator, the smartphone occupies a leading position at the end of 2016. By the way, here are the ten most secure devices by SAR level at the end of 2016 (according to sammobile.com):

  • Samsung Galaxy S7 Edge (0.264)
  • Asus ZenFone 3 (0.278)
  • Samsung Galaxy A5 2016 (0.290)
  • Lenovo Moto Z (.304)
  • OnePlus 3 (0.394)
  • Samsung Galaxy S7 (0.406)
  • HTC 10 (0.417)
  • Sony Xperia XA (0.473)
  • Honor 5X (0.560)
  • Samsung Galaxy A3 2016 (0.621)