Mobile Phone Related Rumors And Truth

Cell phone radiation causes cancer

Myth 1: Cell phone radiation causes cancer

Truth: In 2013, there was no credible evidence to prove that weak RF signals would affect human health. According to scientific knowledge in 2013, this radiation will not cause harm to human body within a reasonable range. According to the safety upper limit set by the International Commission on Non-ionizing Radiation, the safe radiation range borne by human body is 10 W/m2

Higher radiation when making phone calls with low power

Myth 2: The radiation of low battery phone calls is higher

Truth: People usually say that the radiation intensity of mobile phones has nothing to do with the remaining power of mobile phones, but with the signal intensity of mobile phones. This rumor clearly confuses "one cell phone power" and "one cell phone signal". In the case of only one cell phone signal, the radiation intensity of the mobile phone may be "1000 times higher than usual"

Charging and playing with mobile phones will explode

Myth 3: Charging and playing with mobile phones will explode

Truth: The explosion of mobile phones in succession is frightening. The prime culprit of the explosion is actually a poor mobile phone charger. So try to use the charger and battery certified by the manufacturer. In addition, playing with the mobile phone during the charging process will indeed increase the heat of the mobile phone. For safety, try not to play with the mobile phone during charging

Mobile phone radiation causes scalding on the phone face

Myth 4: Mobile phone radiation causes scalding on the phone face

Truth: According to previous test results, the maximum temperature rise caused by mobile phone radiation on the head is 0.194 degrees Celsius. According to IEEE safety standards, the threshold of local temperature rise in the human body is not more than 3.5 degrees Celsius. If the normal temperature of the human body is 36.5 ℃, the local temperature cannot be higher than 40 ℃, and the maximum temperature caused by mobile phone radiation is less than 37 ℃, which is in the safe range. Moreover, humans can also regulate their local temperature through their own body fluid flow. Therefore, the basis for temperature rise caused by radiation is not sufficient

Although the temperature rise caused by radiation is limited, it is not uncommon for the phone itself to become hot. There are two main reasons why mobile phones become hot:

1: Playing with the mobile phone for a long time causes a large load on CPU and GPU. Due to the small space of the mobile phone, the limited heat dissipation capacity, and the heat generated by the battery itself, the mobile phone will be scalded, and the temperature can even reach 50 degrees, which may naturally burn the skin;

2: If the RF front-end is used for a long time, such as making a phone call, and the signal of the mobile phone is not good at this time, to ensure the quality of the call, the base station will improve the power output of the RF terminal of the mobile phone through power control technology, resulting in increased local heating of the RF front-end. People who have used mobile phones know that if they call for a long time, the receiver part of the mobile phone will be highly heated. In addition, the user holds the mobile phone close to the skin, which makes the heat dissipation not ideal, resulting in burns