Why does the signal decrease when the phone is charged and heated?

It generally heats up when charging, as long as it's not very hot.

The charger is equivalent to a small transformer, which converts 220V electricity into a voltage that your mobile phone can accept When the primary winding of the transformer is energized, the magnetic flux generated by the coil flows in the core, because the core itself is also a conductor, and the electric potential will be induced in the plane perpendicular to the magnetic field lines, and this electric potential will form a closed loop on the section of the core and generate an electric current, as if a vortex is called "eddy current". This "eddy current" increases the loss of the transformer and increases the temperature rise of the transformer with heating in the core. The loss caused by "eddy currents" is called "iron loss".

The conductor used to wind the transformer is copper wire, and these copper wires have DC resistance, and this resistance will consume a certain amount of power when the current flows, and this part of the loss is often turned into heat and consumed, which we call "copper loss". Therefore, the temperature rise of the transformer is mainly caused by iron loss and copper loss. If it's a general heat, it's fine, but if it's very hot, your charger will have a problem!

As long as it is not a superconductor material, the material itself has resistance, according to the Joule's law formula, the heat generation of the device is equal to the square of the current multiplied by the resistance of the electrical equipment, and the current equipment in order to quickly charge, all use the fast charging scheme of high current and high voltage, for example, the 120W charger uses the 20V6A scheme, the resistance R remains unchanged, the calorific value of the electrical appliance is 36R, compared with the 4R heat generated by the 2A current of the old equipment, the heat generation is greatly increased, Therefore, when charging, the electrical appliance will naturally heat up hugely.

1.It may be that the phone's battery is already too depleted. Because the mobile phone is naturally worn out or used in a high-temperature environment and is damaged by the wheel shed, these will lead to the inability to fast charge.

2.The charging equipment is not the original equipment. Most of the general mobile phones can only match the flash charging mode of the mobile phone with the original charger and charging cable, and any equipment that is not the original field cannot turn on the flash charging mode, and will charge slowly.

Only the original charging equipment from the official factory can be turned on for fast charging.

3.Please make sure that your phone and charger support fast charging.

4.Check the interface for foreign objects or dirt.

If you find any foreign matter or dirt in the interface, it is recommended that you clean it up in time (you can use a clean soft brush, and if possible, you can take alcohol).

A cold knowledge: the temperature of flash charging is generally 15-35 degrees, and too high or too low temperature will affect the speed of flash charging. Because the temperature can affect the activity of the battery, resulting in slower charging and not charging at all.

But the phone temperature is too high. The battery is damaged, while the temperature is low not.

The reasons why the phone is hot when charging are as follows:

1. Processor problem:

The processor, that is, the mobile phone CPU, is a highly integrated SOC chip, which not only integrates the CPU ** chip and GPU graphics processing chip, but also a series of key chip modules such as blue, GPS, radio frequency, etc., which is the most integrated chip in the smartphone chip, and the module will dissipate heat at high speed.

In layman's terms, the mobile phone processor is equivalent to integrating both the CPU and the graphics card module, and also contains some other modules. Friends who are familiar with computers know that CPUs and graphics cards are both big heaters, and the two are fused together, plus it is a very small chip module, and the heat generation is naturally the largest, so it is easy to understand.

2. The battery is hot when charging

During the charging process, the power circuit has resistance working when it is running, and the resistance and current are playing with each other, and heating is definitely inevitable, and it is mainly concentrated in the battery and the internal PCB motherboard. In the winter when the ambient temperature is not high, mobile phone charging may rarely cause the mobile phone to be hot, but in the hot summer, due to the increase in ambient temperature, coupled with the heating generated by the internal charging and trembling during charging, because the difference between the internal temperature and the ambient temperature is not large enough, resulting in a decrease in heat dissipation efficiency, it will naturally lead to the hot mobile phone.

3. Seasonal issues.

Generally speaking, it's normal for your phone to get a little hot while charging in summer, as long as it's not too hot. But sometimes, when the mobile phone is charging, we also use the mobile phone to play games or watch **, which is easy to aggravate the internal stability of the mobile phone, resulting in the situation that the mobile phone is particularly hot.

If you are using a vivo mobile phone, the heating during charging is due to the energy conversion process of mobile phone charging, during which a certain amount of heat will be generated, and the charging power of the flash charging model is larger, and the heat generation will be higher while shortening the charging time, which is a common heating phenomenon, and it is recommended to refer to the following methods:

1. Use standard charger and data cable for charging;

2. Clean up the background program: open i Butler - Utilities - Mobile Phone Cooling - One Cultivation Cavity Key to Cool Down;

3. Keep the appropriate ambient temperature and heat dissipation environment of the shirt to avoid foreign body coverage and direct sunlight on the mobile phone.

4. Turn off network acceleration: Go to Settings - WLAN - Network Assistant - Disable "Data Network Acceleration";

5. Try to avoid using your phone while charging.

Because the battery will produce slow heat generation when it is working, it can be divided into Joule heating, polarization internal resistance heat, chemical reaction heat and so on according to the different principles of heat generation. The largest proportion of this is Joule fever. In the charging process of the battery, the method of "constant current and constant voltage" is generally adopted, so that there is an electric current inside the battery.

This electricity flows through the resistance inside the battery, which naturally generates a certain amount of heat.

Other reasons why the phone is heating while charging:

1. The phone is still in use when it is charging.

2. When charging the mobile phone, the lead is not the original charger.

3. Charge the phone with the phone case.

There is an energy conversion process in mobile phone charging, during which a certain amount of heat will be generated, the charging power of the flash charging model is larger, and the heat will be higher while shortening the charging time, if the surrounding environment temperature is high, such as summer, it is not conducive to the heat dissipation of Suibu mobile phone, and the heat during charging will be more obvious. It is recommended to refer to the following methods:

1. The standard charger has been rigorously tested, and the standard charger and data cable are used for charging, which can not only ensure the stable charging speed, but also ensure the safety of use;

2. The use of the mobile phone during charging will increase the operating power consumption of the mobile phone, resulting in an increase in heat, so the use of the mobile phone should be avoided as much as possible;

3. If you are wearing a protective case for your mobile phone, removing the protective case can effectively improve the heat dissipation of your mobile phone, but you should pay attention to the heat sensation of your hands will be more obvious if you directly contact the heating part of the mobile phone within a short period of time after removing the protective case.

4. Place the mobile phone on an object with good heat dissipation for charging (e.g., guess the silver spike desktop), and avoid placing it on an object that is not easy to dissipate heat (e.g., sofa, quilt, blanket);

5. Before charging, one key to speed up the cleaning of background programs to reduce the power consumption of the mobile phone.

1.Close unnecessary apps: If you run multiple apps at the same time, your phone's processor will work harder, causing your phone to heat up. Therefore, closing unnecessary applications can reduce the burden on the processor, which in turn reduces the heating of the phone.

2.Turn off Auto Brightness: Auto Brightness Adjusts the brightness of the screen based on changes in ambient light, but it also increases your phone's energy consumption and heat. Therefore, turning off automatic brightness adjustment and manually adjusting the screen brightness can reduce the heating of your phone.

3.Turn off Bluetooth and Wi-Fi: If you don't need to use Bluetooth and Wi-Fi features, you can turn them off, which will reduce your phone's energy consumption and heat.

4.Avoid using your phone for long periods of time: Using your phone for long periods of time can cause your phone to heat up, so try to avoid using your phone for long periods of time.

5.Use a radiator: If you need to use your smartphone for a long time, you can use a radiator to lower the temperature of your phone. A heatsink can lower the temperature of your phone by increasing air circulation.

Through these methods, you can reduce the heat of your phone.

If you use a vivo mobile phone, there is an energy conversion process in mobile phone charging, during which a certain amount of heat will be generated, and the charging power of flash charging models or tablets is larger, and the heat generation will be higher while shortening the charging time, which is a common heating phenomenon. If the ambient temperature is high, such as summer, which is not conducive to the heat dissipation of the device, the heat during charging will be more obvious.

There are a few tips that can effectively improve the phenomenon of charging heat:

1. Use standard charger and data cable for charging;

Due to the different specifications and charging protocols of third-party chargers, it may bring problems such as heat generation to the device. Please use the standard charger and data cable to ensure stable charging speed and safe use.

2. Place the device in an environment with good heat dissipation for charging.

Place the device on an object with good heat dissipation (e.g., tabletop), and avoid placing it on objects that are not easy to dissipate heat (e.g., sofa, quilt, blanket).

3. Try to avoid using the device while charging.

The device itself will heat up when charging, and the device will also heat up when it is used, and the heat will be aggravated when the device is used while charging.

4. Remove the protective case.

If you are wearing a protective case, removing the protective case can effectively improve heat dissipation, but it should be noted that the heat sensation in your hands will be more obvious if you directly contact the hot part of the device for a short period of time after removing the protective case, and the heat sensation will be relieved after a little waiting.

5. Clean up useless programs in the background.

Before charging, clean up unwanted background applications to reduce the power consumption of the device and reduce heat generation.

If the above methods fail to solve the problem, you can back up the data of the mobile phone in advance, and bring the mobile phone to the local vivo customer service center for testing and processing, customer service center address: enter the vivo official website vivo**app--my-service outlets or vivo official website web version--scroll bottom--service support--service network query--select the province and city to query the customer service center address. It is recommended to contact ** in advance before going to avoid empty running, plan the itinerary reasonably, and travel safely.

The battery is broken and needs to be replaced! Otherwise, it will **!