Scientists around the world are busy searching for the dangers posed by mobile phones.

This is due to the fact that the number of users cellular communications is growing, and operator equipment is being placed in public places. Among experts, opinions are divided: some believe that technology and progress are good, others believe that the more gadgets there are, the better for people’s health and the environment.

Radiations in life

Scientists see a particular problem in the fact that, unlike other electrical appliances, the telephone is located in close proximity to a person’s head, so the impact of gadgets is considered to be more negative than, for example, radiation from a microwave oven. According to experts, Bluetooth headsets do not save the situation, since the wireless interface also carries a certain amount of radiation.

In addition to smartphones, devices that are potentially hazardous to human health include microwave ovens, radios, modems, routers and much more. All of these devices emit radio waves to a greater or lesser extent, but scientists see less danger in these items due to their distance from the user during operation.

What is the SAR level?

Due to the way it works, the phone certainly emits non-ionizing radiation. To classify the danger level of radiation, the SAR system was introduced. It shows the level of impact on the human body per second of use of the gadget. The value is measured in watts per kilogram.

All phones that are officially available for purchase in Russia must comply with the permissible SAR value - up to 1.6 W. This value is 2.5 times lower than the one that made changes to the DNA of animals during experiments.

Smartphones do not emit radiation as such, but non-ionizing radiation is still observed. It does not change the DNA structure and does not harm the user’s body. The effect of non-ionizing radiation can be observed in the form of heating of the ear after a long conversation.

Precautionary measures

For those who seek to minimize the impact of gadgets on the body, experts advise using mobile phones on the street, connecting a headset if possible, and reducing call time to 1-2 minutes. It is also recommended to limit the daily operating time mobile phones children and people with weak immune systems. It is better to leave the device on charge away from the bed, and in everyday life, carry the smartphone in a bag rather than in a pocket.

What's happened SAR level?

Among the characteristics of the phone you can often see the category “SAR level”. Many people do not know what this means, although for others this parameter means a lot.

During operation, a mobile phone inevitably creates a weak electromagnetic field around itself - it receives and sends a radio signal at a certain frequency. The electromagnetic field affects the human body, but this influence has not yet been fully studied - which is why there are many rumors and speculations associated with it.

The most obvious effect is the energy that is released in human tissue under the influence of electromagnetic radiation. That is, they heat up slightly. In particular, a similar principle is used in microwave oven, but do not confuse a microwave oven and a mobile phone. They are designed differently and work on different frequencies and are designed for different purposes. The power of any stove is hundreds of times greater than the power of any mobile phone, finally.

What is the SAR level? In strict language, this is the amount of energy released by human tissue at the maximum signal level and, accordingly, radiation from a mobile phone in one second. This level is specially measured in the laboratories of large mobile phone manufacturers so that the devices are approved for sale. There are websites where you can check the SAR level of any mobile phone. Many manufacturers place it in technical documentation. The permissible SAR values ​​in Europe and the USA are very low, such radiation is safe even for a child. This permissible value was specifically set with this in mind.

Much more worrying may be caused by various unexplored aspects of electromagnetic radiation, which may act detrimentally over time, that is, it is a hidden source of some diseases and ailments that will only appear over time. Unfortunately, research on this topic has so far did not give reliable results. That is, there seems to be a danger, but no one has yet been able to “catch” it or understand its nature. In this case, a simple logic applies - if the effect on the body is constant and intense enough, then it will have some consequences.

So, we can conclude: The electromagnetic field of a branded mobile phone is not dangerous to the human body with moderate use of the device.

If you have to so many talk on a mobile phone ( 2-3 or more hours a day), then the negative impact can be minimized by following these tips:

• Buy a device with low level SAR (Philips X501, Samsung GT-I8000, Nokia 6600i Slide, Samsung GT-S3100, Sony Ericsson W760i, LG GW620, Alcatel One Touch 806);
• Most high level radiation is recorded at the moment the connection is established, so after dialing the number, do not rush to put the phone to your ear, wait a few seconds;
• Buy a wired or Bluetooth headset;
• If you are in an area of ​​uncertain or relatively weak reception (less than half the scale on the phone), you should reduce the duration of calls to a minimum and, if possible, replace voice communication with SMS;
• If you often make calls from your car, install a remote car antenna. The metal body of a passenger car significantly worsens the conditions for transmitting a signal from the phone to base station, so the power increases.

SAR is an important indicator of the harm of phones

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 possible answers? There may be several of them:

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

The indicator of the parabolic time/price system is terrible, how difficult it is...

The code for the public airport in Sparta, Illinois, USA - who would have thought...

What nonsense! - you say, - How does all this relate to the topic of the site?

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

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

SAR is an important indicator!

This means that the indicator is important. And it will also be useful to know him.

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

As we know, there is a signal receiver and a transmitter in the phone (articles about the sensitivity of the phone and the power of the transmitter). They are the sources of electromagnetic radiation. International organizations have established maximum permissible SAR levels. This value is measured in W/kg.

In the USA, the limit is 1.6 W/kg, in Europe - 2 W/kg. As we 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, your phone will become less harmful to you. In all this confusion with the maximum permissible SAR figures, only one thing is clear - the lower the better.

In Russia, studies on the effects of mobile phones 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 over the years, all kinds of studies have been carried out on the effect of cell phones on humans. Here are some results:

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

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

3) Their German colleagues discovered that blood pressure increases while talking on the phone.

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 the dangers of mobile phones. Hence the differences in determining the safe SAR level. I repeat, THE LESS IS THE 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 on maximum power. In reality, the radiation power depends on a number of parameters, one of which is the quality of communication. The rule applies here: THE BETTER THE COMMUNICATION QUALITY AT THE POINT OF LOCATION OF THE SUBSCRIBER, THE LOWER THE RADIATION POWER.

This implies simple tips, allowing us to reduce the impact of radiation on you and me.

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

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

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

4) At the moment of receiving/calling, the phone radiates to the maximum. Therefore, do not hold the phone to your ear immediately after dialing a number. Wait for the connection to be established.

In the last few years, in Europe and America, certification of phones according to SAR - the specific absorption rate of electromagnetic radiation by body tissues - has become mandatory. In this regard, it is worth figuring out whether this 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 that is emitted by a mobile phone by living tissues of the human body.

For the average person, this indicator means how strong the SAR of phones is, which can potentially lead to health problems.

It’s worth immediately making a remark 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 people, there is no exact confirmation and actually proven facts, therefore SAR in mobile phones is determined and indicated in the characteristics as a warning for those to whom this value is important.

How to find out the SAR level

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

Runet users may find it convenient to use the Yandex. Market". 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 a 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 data from other devices, which allow you to learn more about the models of the same manufacturer and its direct competitors. To complete the picture, specific absorption coefficient values ​​for the brain and other body tissues are also indicated.

At the moment, there is no single global standard for the specific absorption rate of magnetic field energy from phones, so individual geographical units set it independently.

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

The American standard limits mobile phone manufacturers to 1.6 W 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, and there is no way to convert W/kg to W/cm2, which is why there is no clarity on the 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 from electromagnetic radiation on the human body or not is everyone’s choice, since at the moment there is no evidence of harm, or, conversely, harmlessness, or even benefit of radiation.

At the same time, the majority modern smartphones shows decent results for this criterion, none of them exceed the levels of both European and American maximum permissible values.

The most secure smartphone

Samsung smartphones show excellent indicators in terms of emitted radiation levels. None of their devices exceeded 0.7 W/kg.

In average values, the leader in SAR level can confidently be called the Korean campaign.

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 place is occupied by Samsung Note10 5G Exynos with 0.182 W/kg.

Most emitted phones

As surprising as it may be, smartphones turned out to be the most “harmful” Apple, who strive as much as possible for the comfort and safety of the users of their products.

The average SAR level according to the European method of calculation was 1.1 W/kg, which falls within the range of values. Also, it is important to note that the calculation displays 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 has a high score SAR.

conclusions

To obtain the German environmental certification "Der Blaue Engel" (translated from German as "Blue Angel"), the specific absorption capacity of the phone must be less than 0.60 W per kilogram. All presented smartphones in SAR rating more than twice this figure.

Therefore, there is no universal guide to a “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 Chinese company's phones are not included in the safe list.

In the previous article, a figure of 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 from the point of view 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 didn’t find your mobile phone in the list (it doesn’t matter whether you have Xiaomi or not), but want to know what its radiation level is, write the model in the comments.