My phone starts reverse charging when connected to a USB flash drive through an OTG cable

Problem:

The phone starts reverse charging when connected to a USB flash drive through an OTG cable. After the user manually changes the connection mode to data transfer (or other modes), the phone automatically switches back to reverse charging.

Cause:

When you connect your phone to a USB flash drive through an OTG cable for data transfer, your phone needs to charge the USB flash drive. This is normal and does not affect the data transfer process.