Good, I can still open my eyes today and see the dawn. A few days before the "doomsday", I heard such a joke:

A: "The end of the world" is coming, what should we do?

B: Today's smart phones all have "flight mode". I'm afraid it's "the end of the mustard"!

A: Really? Is it reliable?

··· ···

Imagine that when you turn on the flight mode of your mobile phone at the moment of disaster, can you really fly like Harry Potter? Of course, he is riding a broomstick. Do you want to ride a mobile phone?

Obviously, these are all jokes about the current smartphone flight mode. Xiaobian searched the relevant information on the Internet with great interest. Not only that, but also saw even more funny posts on some forums. Why did my mobile phone turn on flight mode and fall from the fifth floor or break? The answer is all kinds of strange things!

So what is the so-called flight mode of smart phones?

The flight mode of the mobile phone is also called aviation mode and flight mode. After the flight mode is turned on, the GSM/GPRS module of the mobile phone will be stopped. This mode can be turned off SIM Card function, so that the mobile phone is not in the state of transmitting and receiving signals, without affecting the operation of other functions of the mobile phone (generally, the mobile phone cannot operate without SIM card).

When the GSM/GPRS module of the mobile phone is turned off in flight mode, the mobile phone will not actively send a paging signal to the base station, that is, it will not attempt to contact the base station, but it can generally make an emergency call (similar to the principle of no sim card, in this mode, the mobile phone can generally make an international call 112, and may not support 110, 120 and other domestic calls).

Because the mobile phone paging signal will interfere with the electronic equipment on the aircraft, it is not allowed to turn on the mobile phone on the aircraft. In this mode, the functions related to the mobile phone signal are turned off, and the mobile phone can be turned on to continue to use other functions, such as checking the phone book, enjoying the articles, movies, and playing games on the mobile phone, so it is called Flight Mode 。 Most of the power of the mobile phone is consumed by the signal. The signal is turned off in flight mode, which saves power very much.

According to this, as long as the mobile phone is in flight mode on the plane, there is no problem playing games and watching movies. However, similar news has been heard all the time, saying that passengers refused to turn off their mobile phones on the plane, but instead switched their mobile phones to "flight mode" and used them, but they were eventually fined. Why should we be fined when "flight mode" is turned on? Since "flight mode" is useless, why should businesses set such a function on their mobile phones?

After searching by all parties, the general reasons are as follows:

1. Theoretically and technically, it may be considered that "flight mode" has little impact on the flight process, but at present, the Civil Aviation Administration has failed to certify its safety. To be safe, it still needs to be prohibited.

2. At present, domestic models have few anti-interference functions. When the mobile phone is in "flight mode", wireless navigation is still open, which will interfere with the aircraft's navigation system, affect the communication between the aircraft and the ground control center, and bring hidden dangers to air safety.

3. "Flight mode" is developed by mobile phone manufacturers, and there is no unified implementation standard at present. It is still illegal for passengers to use "flight mode" without turning off their mobile phones when taking the plane.

4. "Flight mode" is indeed a mobile phone function, which can provide the convenience of anti disturbance under certain circumstances, but it is named "Flight mode", which is easy for users to mistakenly think that it can be used on the aircraft. In addition, naming this kind of mobile phone function as "flight mode" may also be a marketing gimmick of mobile phone merchants.

In fact, in the final analysis, it is for everyone's safety. In addition, in order to avoid losing your money in vain, I advise you to turn off your mobile phones when you fly. After all, safety comes first!

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