Why can t I use my mobile phone on a plane? Can I use a laptop on a plane?

Civil Aviation Authority in 2018.

The "Guidelines for the Evaluation of the Use of Portable Electronic Devices (PED) on Aircraft" issued by the aircraft clearly states that the equipment released on the aircraft this time includes portable electronic devices PED (including laptops and tablets).

etc.), emitting portable electronic devices, non-emitting portable electronic devices (PEDs without radio emission functions; or PED, which has a radio transmission function but has been turned off).

Yes, it can be used at all times except when the plane is on the sidelines of take-off and when the laptop cannot be used during landing (but not by using a wireless network card, which will interfere with the aircraft signal).

In addition, very few airlines have a power supply for passengers, and in most cases they can only charge up in advance. At present, the relevant laws of China stipulate that passengers cannot turn on their mobile phones during the flight of Chinese civil aviation passenger aircraft, including mobile phones with airplane mode function. The reason is that the mobile phone network may affect the navigation system, but be careful, it is only a possibility.

Since there are laws and regulations, they must be followed. Tablets, laptops, etc., can be used when the aircraft is in level flight (safe altitude cruise) when the network is turned off.

On domestic flights, electronic devices with Wi-Fi connection and message sending and receiving functions are not allowed because they interfere with the aircraft's signal, but they can be used without an Internet connection****, processing documents, listening to songs, etc.

*Laptops are available on board**. According to the latest airline regulations, passengers are allowed to carry laptops with them, and they need to check it in. However, when using a laptop, it is necessary to turn off the slow-off WiFi function, because the wireless network front and roll signal may interfere with the aircraft's communication and navigation system.

In addition, to ensure the safety of passengers and the aircraft, passengers need to comply with relevant safety regulations, such as placing laptops in carry-on backpacks for quick removal in case of emergency.

Computers can be brought on board the plane and used, that is to say, if passengers carry laptops, there is no problem with computers on the plane, and it is allowed for the aircraft to be picked up and emptied. Since computers are not prohibited by airlines, passengers have no problem on board the plane with laptops.

Precautions when carrying and using a notebook:

1. Computer notebooks are not prohibited items on airplanes, they are electronic devices and can only be carried around.

2. The quantity is affected by the weight of carry-on items and cannot exceed the free baggage allowance.

3. Turn off the wifi (wireless network) function when using the computer on the plane.

4. Use when the aircraft flies smoothly, do not use it during take-off and landing.

Reasons why the internet is not available on board the aircraft:

1. The altitude of the aircraft is very high when it flies normally, generally above 10,000 meters, and no commercial communication signal can cover this altitude at present, so it cannot access the Internet.

2. During the take-off and landing phases, the use of mobile phones and wifi on the aircraft may interfere with the communication between the aircraft and the tower, which will affect flight safety. However, at present, some airlines have launched a paid service for the use of wifi on board, providing in-flight wifi services under the condition of ensuring flight safety. <>

You can play with mobile phones and computers when you fly, but you can't turn on a wireless LAN card, so you can only use it offline.

The use of electronic devices on board the aircraft is not arbitrary, but more regulated, and during the flight, when the pilot-in-command discovers the presence of electronic interference and suspects that the interference comes from portable electronic devices used by the occupants of the aircraft, the pilot-in-command and the person who has granted the right to the disturbance shall require them to turn off these portable electronic devices. The boy is well matched.

and where the circumstances are serious, it shall be handed over to the ground public security organs for disposition in accordance with law after the plane lands. All portable electronic devices (except medical) on board must be disabled in the event of interference with navigation and communication equipment on board or when the crew receives an order in an emergency. In exceptional circumstances, such as low visibility flight phases, portable electronic devices may also be asked to turn off.

The flight of the aircraft is divided into three time periods, which are the take-off time, the level flight time, and the landing time. Among them, you can play with the computer during level flight time, but you must turn off the network, and most planes do not have charging equipment prepared for it, and the power of the computer needs to be charged in advance. In addition, when carrying a computer through security, it is necessary to remove the computer bag in advance and pass through the X-ray machine separately from other packages.

Precautions for flying:Ordinary passengers' luggage must not exceed 20 kg, and the size must be within 100 cm x 60 cm x 40 cm. It should also be noted that lighters, cutlery and other flammable, explosive and dangerous things cannot be carried on board the plane.

When going to the airport, it is better to be sure to arrive at the airport 1 or 2 hours in advance, and also pay attention to which terminal it is.

Because sometimes an airport has several terminals.

Laptop.

Lithium batteries are not allowed to be put into the checked Yuyan luggage, in high altitude and low pressure bumps and other conditions, the battery may spontaneously combust, so it cannot be checked in, and it is not easy to find the source of fire. Power bank.

Cameras and other devices with lithium batteries must be carried.

Laptops can be carried on board, and meals on board are free of charge.

The luggage that can be carried on the plane is called Tongzhi boarding suitcase, which generally requires the sum of the three sides not to exceed 115cm (that is, the sum of length, width and height cannot exceed 115cm), and the weight of the wheel mu can not exceed 7kg.

About checked baggage:

The free checked baggage allowance for economy class passengers is 20 kg, and for economy class passengers holding student passports, the free checked baggage allowance is 30 kg;

The free checked baggage allowance for business class is 30 kg;

The free checked baggage allowance for First Class is 40 kg.

However, when the destination is the Americas, the checked baggage can be two pieces, each not exceeding 23 kg, and the length of a single piece of baggage on three sides and not exceeding 158 cm. When exceeded, passengers are required to pay excess baggage fees. Note:

Depending on the airline, there are different requirements, so passengers can consult the airline they will be flying with in advance.