The main reasons why mobile phones get hot while charging

July 07, 2023

The main reasons why mobile phones get hot while charging are the following:


1. Electricity into heat: When the phone is connected to the power supply for charging, the current passes through the circuit between the charging line and the phone battery. Inside the battery, electrical energy is converted into heat. There is a certain amount of energy loss in this process, which causes the phone to generate heat.




2. Internal electronic components work: The electronic components inside the phone, such as the processor, memory, charging chip, etc., will work more actively during the charging process. The operation of these components generates heat, causing the phone to heat up.




3. Charging loss and current amplification: During the charging process, there is energy loss, some of which will be lost in the form of heat. In addition, when the mobile phone is charging, the current needs to be amplified through the transformer or charger, and this process will also generate a certain amount of heat.




4. Poor ambient temperature and heat dissipation: If the ambient temperature is high or the mobile phone has poor heat dissipation (such as using a heavy mobile phone case), the heat is not easy to dissipate, resulting in an increase in the surface temperature of the mobile phone.




Under normal circumstances, it is normal that the mobile phone will have a certain degree of heat during the charging process. However, if the phone overheats to the point of discomfort or exceeds the normal range, disconnect the charge promptly and check the phone for problems.


How to prevent mobile phone charging heat


Here are a few things you can do to help prevent overheating during charging:




1.  Use a High-Quality Charger & Cable: Using the high-quality charger and data cable can ensure that the charging process is more stable and efficient, reducing heat.

 OCC charging cables come with Professional certification, ensuring safe charging at the highest possible speed.




2. Avoid using your phone at the same time: Try to avoid using your phone at the same time while charging, especially for large applications, games, or multitasking. This can reduce the load and energy consumption of the phone, reducing the risk of heating.




3. Avoid charging for a long time: While modern smartphones often have overcharge protection, overcharging for a long time can also increase the risk that the phone will heat up. It is recommended to unplug the charger when the phone is fully charged.




4. Remove the phone case: Some heavy phone cases may block heat dissipation, causing the phone to heat up too much. If you feel that the phone heats up more while charging, you can try to temporarily remove the phone case to let the phone dissipate heat better.




5. Avoid covering during charging: Avoid placing the phone on a soft bed, blanket or other materials that are easy to conduct heat when charging, so as not to affect heat dissipation. Make sure the surroundings are well ventilated.




6. Clean the mobile phone regularly: the mobile phone may accumulate dust and debris after a period of use, affecting the heat dissipation effect. Regularly clean the charging port and heat dissipation hole on the back of the phone to keep it unobstructed.




If you find that the phone is still overheating when charging, or even there is a safety risk, please contact the mobile phone after-sales or professional maintenance personnel in time for inspection and treatment. It is important to keep an eye on your phone to avoid damage or safety issues caused by overheating.


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