The temperature of the mobile phone is very low when it is blown by cold air. If you take it out at this time and take it to other places with high temperature and humidity, it is easy to condense water droplets, and it is usually easy to malfunction or even burn out the motherboard. If you have to put it in the air conditioner, you should put it in the car for a while after taking it off, and there will be no problem when the temperature of the mobile phone rises to near the space temperature. That's basically what I did. I used mobile navigation, and then I bought a mobile phone stand with an air outlet.
Precautions:
Although there are many kinds of vehicles, their structures are similar. This should be said to be the credit of standardization and the need of large-scale production line. With the development of society, the progress of science and technology and the change of demand, the appearance of railway vehicles has also begun to change, especially the passenger cars are no longer the same old faces. However, their basic structure has not changed obviously, but the specific parts have more scientific and advanced structural design.
Generally speaking, the basic structure of a vehicle consists of five parts: body, underframe, running gear, coupler buffer device and braking device.
The car body is the part of the vehicle carrying goods or passengers, and it is also the basis for installing and connecting other parts of the vehicle. The bodies of early vehicles were mostly wooden structures, supplemented by steel plates and bow bars. Modern automobile body is mainly steel structure or light metal structure.