How is it that there is no electricity when the mobile phone is charging?

When the mobile phone is charging, if the running software or using a certain function consumes a lot of power, the charging speed may be slower than the power consumption speed, which may lead to the situation that the mobile phone slowly loses power while charging.

Note: It is recommended not to run software or use functions that consume too much power when charging a mobile phone. Long-term use will shorten the normal service life of the battery.