Nowadays, the charging protection of mobile phones is very good. Whether it is charging on or off, there is no bad impact on the battery of the mobile phone. Of course, if you want the fastest charging speed, then still Charging is fastest when the phone is turned off, but don't forget that the load on the mobile phone chip is relatively large during the process of turning the phone on and off, and it will consume a lot of power when it is turned off and on, so I think charging when the phone is turned on is the most appropriate.
Many people also like to turn on airplane mode while the phone is on for charging. I have also tested this situation and it is true that the charging speed will be significantly faster, which can be said to be second only to charging when the phone is turned off. , as long as you are not worried about missing phone calls and other information during charging, you can do this. But whether it is turned off for charging or turned on for charging, the ambient temperature of the mobile phone charging is the most important. Many people like to bury their mobile phones under the pillow to charge, which may cause the battery temperature to rise. Too high a temperature will affect the battery life. , and may even be dangerous.
Whether it is slow charging or fast charging, it does not matter whether you turn on airplane mode. After all, normal mobile phone signals will not bring too much temperature and pressure to the phone when charging, but if you It’s not good if you like to play mobile games while charging. The mobile phone will generate a lot of heat when running mobile games. This heat and the heat of battery charging will produce high temperatures, which will damage the battery life, so it must be as little as possible. Run large programs or games while your phone is charging.
Nowadays, mobile phones basically use lithium-ion batteries, so first of all, let me tell you a fact: What affects the battery life of mobile phones during charging is not the power on and off state, nor the airplane mode switch, but the temperature. So whether your phone is on or off, whether airplane mode is on or off, you have to keep your phone charging at a good temperature.
The first one is deep charge and discharge. Deep charging and discharging refers to using the phone's power very low and then charging it again. There are different opinions on the impact of this, but I believe one of them is quite reasonable. That is, in the case of deep charging and discharging, the mobile phone is often in a high-current charging state. For most mobile phones, the power system has not been specially optimized and designed, and the heat generated by high-current charging will still be very high. This will definitely have an impact on the battery life.
The second one is to play with your phone while charging. In fact, it is wrong to say that lithium batteries discharge while charging. Lithium batteries do not discharge when charging because the charging voltage is higher than the battery voltage. The real reason is that the charging power supply must charge the battery on the one hand, and on the other hand, it must support the power consumed when you play with your mobile phone. Especially when running large programs and playing games, the charging current is particularly high, causing the temperature of the internal IC devices to rise. This will also cause the temperature of the lithium battery to rise accordingly, which will also affect the battery life.
The third is to put the phone under the pillow when charging. Because when the mobile phone is charging, it will emit some heat to a greater or lesser extent. If you place your mobile phone under the pillow, the heat generated when the mobile phone is being charged will not be dissipated, causing the temperature of the mobile phone battery to continue to rise. In this case, at least it will affect the life of the mobile phone battery, but at worst it may cause the battery to spontaneously ignite, cause a fire or even threaten your life.
If I must say it, it is better to turn off the phone when charging and place it in a ventilated and heat-dissipating place. Because when the phone is completely shut down, the phone does not need to run any programs, which reduces the current consumption to a certain extent and avoids excessive input charging current.
If you don’t shut it down, turn on airplane mode or not, I don’t think it’s a big problem. Because turning on airplane mode will indeed reduce the exchange of information between the mobile phone and the base station. But now there are some apps that will constantly check your network status in the background. When you turn on airplane mode, he may think that your current network status is not very good, thus making it even worse. Frequently check the network status. If you encounter some APPs whose programming is not very rigorous, it may increase the resource usage of the system.
However, now all mobile phone manufacturers have done a better job in optimizing the system during charging, so the impact of these factors is minimal.
In general, when charging your mobile phone, you should pay attention to whether the temperature of the mobile phone is abnormal. If your hands feel very hot, you must take cooling measures in time, or simply stop charging. When you usually use your mobile phone, you can charge it as you go. Lithium batteries have no memory effect.
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It doesn’t matter whether it’s better to turn the phone on or off when charging, and it doesn’t matter whether it’s in airplane mode.
The mobile phone charger is a switching power supply, and the principle of the switching power supply is automatic switching. When charging when the battery power is low, plug the charger into the mobile phone port and start charging. At first, the current will be larger, and the temperature of the mobile phone and charger will rise. As time goes by, the battery capacity increases, the voltage gradually increases, the charging current decreases, and the temperature gradually decreases. When the battery is fully charged and the battery reaches the rated voltage, the charger automatically shuts down and no more current is output.
Charging when the phone is turned on or while playing with the phone. Because the phone consumes power when working, the charging current is larger than the charging current when it is turned off. The heat is larger and the temperature is higher, but it is within the allowable range. , without any harm.
Battery explosion is an individual battery quality problem. With so many mobile phones around the world, Samsung mobile phone battery explosion is an isolated phenomenon.
Charge your phone before going to bed at night. No matter whether it is turned on or off, it will automatically shut down when fully charged. When you wake up in the morning and touch your phone or charger, it is cool, which is evidence. So you can rest assured and have a peaceful sleep.
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There is no need to turn off the phone when charging, and many mobile phones cannot be turned off when charging, and there is no need to turn on airplane mode.
Nowadays, the batteries of our mobile phones are all lithium-ion batteries. The working principle of the lithium-ion battery itself determines that this battery cannot be charged and discharged at the same time.
When the mobile phone is charging, the battery actually exists as a load in the entire circuit, and the power supply of the mobile phone itself is provided by the charger of the mobile phone.
The only difference between turning off the phone and charging without turning off the phone is the charging speed. Even if the mobile phone is in standby, there will be some background applications, and there will also be some signaling interactions for mobile communications. These will consume a part of the current, reducing the current provided to charge the battery.
However, if you are not playing games while charging, these power consumption will not be very large, so it will not extend the charging time much.
Airplane mode is originally a mode that is turned on on a mobile phone on an airplane. In fact, this is also a function caused by rumors.
In the early days, the base stations in the U.S. communications industry were all 2G base stations. The capacity of the base stations themselves was limited, and users on airplanes would frequently switch between multiple base stations, which limited the capacity of the base stations. It occupies a large area and can easily cause congestion in base stations around the airport.
Therefore, when the U.S. aviation industry asked whether mobile phones would cause problems with flight navigation, the communications industry gave a very vague answer, which led to the aviation industry requiring users to turn off mobile phones on the plane. cell phone.
Mobile phone airplane mode. Mobile phones around the world now use "Huawei's patented airplane mode", which means that the mobile phone can turn off the mobile communication network and turn on Wifi at the same time. This can save a little money when charging. current, but the difference in specific applications is not very obvious.
All in all, it is not necessary to turn off the phone for charging or turn on the airplane mode while charging. It is just that the phone charges slightly faster, but You may miss calls, which is an act that outweighs the gain and loss.
Just turn it on while charging.
To put it simply, airplane mode means that the signal of the mobile phone is zero without turning off the phone. It is suitable for use on airplanes, so it is named after it, but it is used when you don’t want to be disturbed by text messages and phone calls, but you are afraid of turning the phone on and off. You can also choose this function when you are very annoyed. Airplane mode turns off the phone communication function, that is, it cannot make calls or send text messages, has no signal contact with the base station, and does not attempt to contact the base station.
Because mobile phone signals will interfere with electronic equipment on the aircraft, mobile phones are not allowed to be turned on on the aircraft. In this mode, the relevant functions of mobile phone signals are turned off, and the mobile phone can be turned on to continue to use other functions, such as viewing Phone book, enjoy articles, movies, etc. on your mobile phone. That’s why it’s called airplane mode.
A large part of the mobile phone's power is consumed by the signal. The signal is turned off in airplane mode, which is very power-saving, so some users will use airplane mode at night instead of shutting down.
There is software for mobile phones that can turn on and cancel flight mode at scheduled times, which is called "automatic flight software".