What's wrong with the cell phone?

Have you ever encountered such a situation: when waiting in line to take the subway, you can't brush anything when the cell phone signal is full. Although there are only two or three signals in the elevator, the phone on the mobile phone will be silent or suddenly interrupted? Is this the destruction of human nature or the decline of morality? Today, I will take you to explore the unsolved mystery of cell phone signal lattice.

First, the more signal cells, does not mean that the stronger the signal.

More signal cells mean that you may be closer to the base station, but the number of mobile phones is not calculated according to a unified standard, but is defined by the mobile phone manufacturers themselves. So they are all in the elevator. Your cell phone signal is full, but you can't make a call. Your little friend has only one signal, but you can talk freely.

Second, what can reflect the real signal situation?

Just check the signal strength of the digital version of the mobile phone directly!

Friends who use Android phones can click Settings-About this phone-status information to check the signal strength in the network status or SIM card status. However, the settings and names of each manufacturer may be different, but the operation is still similar. I believe that if you are witty, you will find it!

Friends who use Apple mobile phones can directly open the dial of their mobile phones, input *300 1# 12345#*, then press the "Call" button to bring up the built-in "Field Test" of iPhone, and click the last neighbor measurement to see the accurate value of signal strength.

3. What does the cell phone signal strength value mean?

For example, which signal is stronger -72 dBm or-140 dBm? Which signal is weaker?

In fact, dBm (milliwatt decibel) is a unit of signal strength commonly used in mobile phones, which is calculated by logarithm, so dBm is generally negative. The larger the value (considering the sign), the better the signal. Therefore, the signal of -72 dBm is much better than that of-140 dBm.

So, how to look at the signal strength through your own signal strength unit? You can refer to the picture below.

-1 to -50, the signal is very good, and playing games/watching videos is unimpeded; Between-50 and-75, the signal is good, and the call and internet access are relatively smooth; Between-75 and-90, the signal is slightly weak, and the call can be normal, but the network speed may be slower; Between-90-110, the signal is weak, and the Internet can barely make a call, but the call quality may be poor, and the network card is stuck; Between-1 10 and-170, the signal is very weak, and even the most basic call may be difficult.

Four, three skills to improve signal strength

So hot, now the true face of the signal grid is exposed. If everyone has a bad signal, there are three tips to improve the signal strength, provided that you are not in the wilderness without a base station.

First, you can try to turn on the flight mode and then turn it off, or restart the phone to receive the signal again;

Second, try to avoid making phone calls in bad weather conditions, and also pay attention to staying away from areas with electromagnetic interference;

Third, although many mobile phone cases are beautiful, everyone should try to avoid using metal mobile phone cases, so as not to affect signal reception.