SAR level - what is it in the phone? List of low and high SAR phones. SAR levels of phones and smartphones: what you need to know? sar meaning for mobile phones

SAR is an important indicator of phone harm

Hello dear readers! I'll ask you one question now ... Just don't rush to answer it. Think...

What is SAR?

Well, what are the answers? There may be several of them:

The monetary unit of Saudi Arabia is the Saudi Riyal (abbreviated as SAR).

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What a BRED! - you say, - How does this all relate to the theme of the site?

Okay, I won't torture you. I'll tell you the correct answer!

SAR is the Specific Absorption Rate (SAR). This indicator determines (attention!) the magnitude of the HARMFUL IMPACT of a MOBILE PHONE on a person.

SAR is important!

So the indicator is important. And it would be useful to know him too.

It would be useful to first read articles about radiation from the phone and harm to the phone.

As we know, the phone has a signal receiver and a transmitter (articles about phone sensitivity and transmitter power). They are the sources of electromagnetic radiation. International organizations have set maximum allowable values ​​for the SAR level. This value is measured in W/kg.

In the USA, the limit is 1.6 W/kg, in Europe - 2 W/kg. As you can see, there is no unity here. In the UK this value is generally 10 W/kg. But this does not mean that if you come to the UK, the phone will become less harmful for you. In all this confusion about SAR limits, only one thing is clear - the lower the better.

In Russia, studies on the effects of a mobile phone on the human body were not conducted until 1997. Only later, in the course of research, it was found that the electromagnetic field of mobile phones has some effect on the brain.

In different countries in different years, various studies of the influence of cell phones on humans were carried out. Here are some results:

1) The subjects were influenced cell phone within 30 minutes. During this time, their intelligence increased. The time to complete tasks for intelligence was reduced due to improved blood circulation to the brain caused by slight heating.

2) Canadian scientists have found that mobile phones cannot cause serious health complications.

3) Their German colleagues found that during a telephone conversation, the pressure rises.

4) Mobile phones interfere with pacemakers. More than a million people live with them in the world.

There is only one conclusion: scientists around the world cannot come to a consensus about harm mobile phones. Hence the differences in the definition of a safe SAR level. Again, LESS IS BETTER! You certainly can't argue with that.

SAR - how does it affect our health?

The SAR value for a phone is determined by the level of electromagnetic radiation (measured in Watts) per 1 kg of brain. Moreover, this value is determined for a mobile phone at maximum power. In reality, the radiation power depends on a number of parameters, one of which is the quality of communication. Here the rule applies: THE BETTER THE QUALITY OF COMMUNICATION AT THE POINT OF LOCATION OF THE SUBSCRIBER - THE LESS THE POWER OF RADIATION.

From this follow simple tips to reduce the effect of radiation on you and me.

1) When talking, do not cover the antenna with your hand.

2) When talking indoors, try to approach the window where the connection is better.

3) If you are in a weak reception area, then do not talk on the phone for a long time.

4) At the time of receiving / calling, the phone emits to the maximum. Therefore, do not bring the phone to your ear immediately after dialing. Wait until the connection is established.

Every mobile phone contains a radio transmitter and receiver and is designed to meet RF exposure limits. These requirements (they define the permissible limits of safe exposure of a person, regardless of his age and state of health) are established international standard, developed by an independent research organization ICNIRP (International Commission on Non-Ionizing Radiation Protection). This standard operates with such a concept as SAR.

What SAR

SAR (English) Specific Absorption Rates) - specific absorption coefficient, showing the maximum specific power absorbed by the human body when using a mobile phone.

SAR measured in W/kg.

Coefficient measurements SAR are carried out in the standard operating position of the device in the maximum transmitter power mode specified in technical specifications, in all operating frequency ranges.

In Europe, the radiation limit is 2.0 W/kg.

In the US, the restrictions are more stringent: Federal Communications Commission (FCC – Federal Communication Commission) certifies only those cell phones, SAR which does not exceed 1.6 W/kg.

How to reduce the harmful effects of radiation

1. During a conversation, hold the phone (smartphone) so as not to block the antenna with your hand (in mobile phones with a built-in antenna, it is located in the upper third of the phone case).

2. Try to keep the duration of conversations to a minimum, if possible, replace voice communication with SMS communication (especially in the weak signal zone).

3. When talking from the premises - if possible - go to the window.

4. Try to make less calls from the car. If possible, install an external car antenna (the metal body of the car significantly worsens the conditions for transmitting a signal from a mobile phone to base station so the phone's transmitter is operating at maximum power).

6. To reduce the radiation power, it is recommended to use accessories "hands-free".

7. When a connection is established, the mobile phone operates at a higher power than during a conversation, so when making an outgoing call, put the handset to your ear not immediately, but a few seconds after dialing (the moment the connection is established on the phone can be determined by the indication on the display).

Notes

1. Most modern phones It has SAR from 0.5 to 1.0 W/kg.

2. Actual level value SAR for a working mobile phone, it may be lower than the maximum value (this is due to the fact that the design of the phone allows you to use the minimum power sufficient to establish a connection with the network of the mobile operator).

3. On the value SAR(except phone model) are influenced by various factors, such as the distance to the base station of the cellular network, the use of accessories.

4. In Russian Federation hygienic regulation of the electromagnetic field created by the elements of the cellular radio communication system is determined by hygiene standards GN 2.1.8./2.2.4.019-94 "Temporary allowable levels ( ) exposure to electromagnetic radiation, generated by systems cellular radio.

In the past few years, in Europe and America, it has become mandatory to certify phones according to SAR - the specific absorption coefficient of electromagnetic radiation by body tissues. In this regard, it is worthwhile to figure out whether it is so dangerous and which companies' smartphones meet these requirements.

The abbreviation SAR stands for "Specific Absorption Rate". In Russian, it is better known as the specific absorption coefficient of the energy of the electromagnetic field emitted by a mobile phone by living tissues of the human body.

For the layman, this indicator means how strong Phone SAR which could potentially lead to health problems.

It is worth noting immediately here - this moment science has not been able to accurately establish the effect of electromagnetic rays on the human body.

Despite many statements about the possible development of cancer and cardiovascular diseases in humans, there are no exact confirmations and really proven facts, therefore the SAR of mobile phones is determined and indicated in the characteristics as a warning for those to whom this value is important.

How to know the SAR level

The level of ATS of mobile phones is currently indicated by major manufacturers of equipment in the passport documentation. The exact data can be found in accompanying documents to the purchased device, or on the official website of the manufacturer on the phone page.

It may be convenient for Runet users to use the Yandex. Market". Since recently, if a mobile phone has an officially registered SAR level, then in the "Characteristics" column you can find an item with the same name "SAR Level", where the number will be indicated.

The large portal devicespecifications.com, which contains a database of almost all modern mobile phones, has a separate SAR column.

It indicates the official level, and also presents for comparison the data of other devices, which allow you to learn more about the models of the same manufacturer and its direct competitors. For completeness, the values ​​of the specific absorption coefficient for the brain and other tissues of the body are also indicated.

At the moment, there is no single world standard for the indicator of the specific coefficient of absorption of magnetic field energy from phones, so individual geographical units set it on their own.

For example, the European standard limits the SAR level to 2 W per 1 kilogram of weight.

The American standard limits mobile phone manufacturers to 1.6 watts per kilogram of weight.

The Russian standard differs from foreign ones - according to the recommendations of SaNPiN, the SAR level is calculated in W per square centimeter of body surface. There is still no exact value, while there is no way to convert W / kg to W / cm 2, which is why there is no clarity in acceptable values.

Table of SAR levels of smartphones from various companies

Xiaomi

Honor

iPhone

Huawei

Samsung

Asus

conclusions

Whether to follow the recommendations of those scientists who claim serious harm to electromagnetic radiation on the human body or not is the choice of everyone only, since at the moment there is no evidence of harm, or vice versa, harmlessness, or even benefit of radiation.

At the same time, the majority modern smartphones shows decent results on this criterion, none of them exceeds the levels of both the European limit values ​​and the American ones.

The most secure smartphone

Samsung smartphones show excellent performance in terms of the level of emitted radiation. None of their devices exceeded 0.7 W/kg.

In average values, it is the Korean campaign that can definitely be called the leader in terms of SAR.

However, the best smartphone in the world according to this criterion was another Korean phone - LG G7 thinQ with a value of 0.144 W / kg. The second line is occupied by Samsung Note10 5G Exynos with 0.182 W/kg.

Most Radiated Phones

Surprising as it may seem, smartphones turned out to be the most “harmful” Apple, who strive to the maximum for the comfort and safety of users of their products.

The average level of SAR according to the European method of calculation was 1.1 W / kg, which is “head to head” within the range of values. Also, it is important to note that the calculation displays the maximum values ​​that smartphones almost never reach in real everyday use.

Camera, battery, processor - all these are very important criteria when choosing a new gadget. However, it is worth paying attention to the safety of the device, having learned smartphone radiation level. This will help you understand which smartphone is more secure and which one has a high score. SAR.

conclusions

To receive the German environmental certification "Der Blaue Engel" (German for "Blue Angel"), the specific absorption power of the phone must be less than 0.60 watts per kilogram. All submitted smartphones in the SAR rating more than double this figure.

Therefore, there is no universal guideline on the “safe” level of phone radiation yet, as there are different safety standards.

Which phones are safe then?

There are no Xiaomi models in the latest infographic. This does not mean that the phones of the Chinese company are not in the safe rating.

In the previous article, less than 0.60 W per kilogram was shown by: Mi 5, Mi 5S, Redmi 3 Pro, Redmi 3S Prime and Redmi Note 3 Pro.

All these are already outdated models, which, in terms of updating, software the company will not support in 2019. Therefore, for the relevance of the information, we will analyze the latter in a separate review.

Dear readers, if you did not find your mobile phone in the list (it doesn't matter if you have Xiaomi or not), but you want to know what level of radiation it has, write the model in the comments.