Do You Believe that These Common Cell Phone Rumors?

By Carrie Tsai,  Last Updated: April 26, 2018

Mobile phones, because of their closeness to our lives, seem to be very eye-catching if they are a little troubled. Recently, studies conducted by the National Institutes of Health and the Ramazini Institute in Italy using thousands of experimental animals have confirmed the correlation between cell phone radiation and cancer, and triggered a new round of debate in the academic world.

Although mobile phone radiation will not cause cancer, there are still some conclusions about mobile phones are certainly wrong. Let’s take a look at these rumors about mobile phones and see would you believe it?

NO.1 The higher the camera lens pixel, the better the quality of the shot

The quality of smartphone photography depends not only on the pixel value, but also requires multiple indicators to be comprehensively measured. It involves the entire camera module, including optical lenses, optical sensors, image processors, and image processing algorithms and software.

For instance, the sharpness of an image up to the quality of the photosensitive element and the resolution of the lens; the sharpness of the image is decisively affected by the lens; the fineness of the image is otherwise closely related to the camera's own image processor and software algorithm.

If only the pixels of the lens are high and other aspects are poor, the photographs taken will not be perfect. Therefore, it is not the pixel height of the mobile phone lens. The quality of the photograph taken will be good.

NO.2 Using toothpaste can repair small scratches on the phone screen

People who claim to use toothpaste to repair minor scratches in the phone's screen believe that the silicon-containing material in the toothpaste can fill the scratches; the rich abrasive agent in the toothpaste can be used to grind the slight scratches on the phone's screen.

Unfortunately, experts pointed out that mobile phone screens are generally made of glass, and their hardness is very high. Most of them are measured with Mohs hardness greater than 5. The general hardness of toothpaste in toothpaste is less than 4, therefore, toothpaste is not able to polish the hardness of the phone screen than it.

In addition, the size of the scratch on the screen of the mobile phone is generally much larger than the diameter of the toothpaste of the toothpaste, so it is difficult for the particles to be firmly filled in the scratches due to friction alone. Considering these two reasons, it is not feasible to use toothpaste to repair the mobile phone screen.

NO.3 Putting a cell phone with a debit card together will degauss the card

In general, a credit card with a magnetic strip on the back may be degaussed because it uses "magnetic force" to record information.

According to experts, mobile phones rely mainly on electromagnetic waves at work, and the frequencies of electromagnetic waves emitted by mobile phones range from 850 MHz in the UHF band to 2.4 GHz in the microwave band. In this frequency range, the main energy form of the electromagnetic wave is an electric field, which does not generate a magnetic field sufficient to change the magnetic stripe information on the bank card, and thus cannot be demagnetized.

For the contactless IC card with a yellow metal plate embedded in the card, it is even more difficult to degauss. Because the IC card uses the micro chip inside the card to store information, it has nothing to do with magnetism.

NO.4 There is no signal on the phone when in distress, you can call emergency phone for help

If there is no signal on the mobile phone, it cannot establish a communication link with the mobile communication network. Calling any emergency call at this time is invalid.

In fact, those who said that calling in distress situations means that they can get an emergency call without a SIM card or under arrears. However, if the communication between the mobile phone and the base station is interrupted, it is impossible to open the rescue call.

NO.5 When the battery power is below 10%, radiation is 1000 times normal

The radiation intensity of the cell phone is only related to the signal intensity, and has nothing to do with its remaining power. In general, the weaker the cell phone signal, the stronger the radiation.

Taking a GSM mobile phone as an example, when operating at a frequency of 1800 MHz, its maximum peak power is 1 W and the minimum power is 1 mW. When the phone is connected to the phone in the worst signal location, the electromagnetic radiation generated may be 1000 times that of the electromagnetic radiation when the phone is connected to the best signal.

The working principle of 3G and 4G mobile phones is different from that of GSM mobile phones. Generally, the maximum radiation power is 100mW, and the minimum power is 1mW, which is about 100 times worse.

“Although GSM mobile phones or 3G/4G mobile phones may have the highest radiation emission of 100-1000 times or more of the lowest radiation, this is only because the lowest radiation value used as a reference is very low, not because the maximum radiation value is too large. "

An expert said that all the regular manufacturers of mobile phone products have undergone rigorous testing, in full compliance with China's electromagnetic radiation standards, will not cause harm to human health.