The so-called \"reverse charging\" is the process of switching to the mobile power supply to discharge and charge other electronic devices when the mobile phone is connected to other devices, and the mobile phone is also the embodiment of a charging treasure.
When the mobile phone with reverse charging function detects that the OTG device supporting data exchange between devices is inserted, the mobile phone outputs voltage to the VBUS on the USB data cable and prompts for reverse charging. However, if the super power saving mode is enabled on Huawei mobile phones, the reverse charging function will be disabled