Golden Tips to reduce the radiation of smart phones

The user rarely abandons his smartphone and holds it in his hands or in his bag Although nothing guarantees that radiation from mobile devices is harmful to them, it is necessary to limit the exposure to radiation.

German expert Jan Heinrich Lauer recommends reducing radiation directly in the body.

The Federal Office of Radiation Protection stated that mobile phone calls use high frequency electromagnetic fields to send and receive voice and data, the user not usually experiencing these electromagnetic fields but absorbing some of the of the energy of these bands.

SAR rate
The radiation is especially generated when transmitting signals between a mobile phone and a base station for mobile phone calls, and SAR is here a signal of the amount of electromagnetic radiation emitted by a mobile phone.

The quantity of power absorbed is measured in W / kg, each phone being placed on the market, the value of the SAR being measured by two measurements, the first during telephone calls to the ear and the second when the Device is placed close to the body.

The user can view these values ​​in the smartphone's user manual. For example, the value of the Samsung Galaxy S9 + on the ear is 0.29 watts / kg and close to the body of 1.35 watts / kg.

For Apple's iPhone X, the value is 0.92 for the ear and 0.95 for the body, and the Huawei P20Pro phone is 0.73 for the iPhone. ear and 1.22 for the body.

"Modern smartphones with LTE or UMTS are less radiant than older GSM-compatible devices," said Jan Heinrich Lauer.

This is also due to the design of the device: large screens increase the distance between the antenna, often installed at the bottom of the device, and the measuring probe, which reduces the monitored value .

Companies generally promote jackets or jackets that reduce the user's exposure to radiation, but Bernd Ties of the German magazine Connect noted that such additional accessories increase the transmission capacity to maintain contact.

Thus, more radiation is directed to the user, while some simple behaviors can be used to significantly reduce radiation exposure.

In general, the user must choose a smartphone with the lowest SAR value possible. It is best to use low radiation models with values ​​less than 0.6. About 55% of smartphones currently available on the market are below this value. However, mobile devices being used more intensely and longer, the user should use the fixed line as much as possible rather than mobile devices to reduce radiation exposure.

Helmet
When the smartphone is turned on, the antenna should be as far away from the head as possible, preferably using the headset.

If the cell phone is not used, it should not be worn close to the body. "Whenever the distance between the phone and the body is doubled, the residual radiation is reduced by a quarter." The bedside table is therefore not a good place to lay the smartphone, as long as it's not too late. It is ready for reception and when it is used as alarm.

Since mobile phones reach their maximum radiation capacity and signal reception is low, the user must avoid making calls, surfing the Internet by car, passing tunnels or trains.

The Federal Office for Radiation Protection has explained that the power of electromagnetic waves is significantly reduced during wireless communications via WLAN or Bluetooth technology compared to mobile phone communications.

With the increasing use of smart phones, the German office recommends protecting young children from exposure to high-frequency electromagnetic waves by using wireless local area networks as much as possible, while stopping the mobile data connection because the Radiation reduction is safe for children and adults.