Why does the POCO F7 heat up when being charged?

Several factors will make the POCO F7 heat up when being charged, such as the features of the fast charging technology, and the impact of using non-standard adapter.
If the POCO F7 heats up when being charged, please refer to the following details:
1. The phone adopts the fast charging technology, which will accelerate the charging speed and cause heat generation. The temperature rise is within the safe range;
2. Please use the standard charging adapter and avoid using the non-standard adapter to prevent charging safety from being affected and heating;
3. The next OTA version will further optimize the balance between the performance and heating.