Take the Xiaomi 6 mobile phone as an example. The setting method is as follows:

1. First open the Xiaomi 6 mobile phone, then find the "Settings" icon on the desktop of the Xiaomi 6 mobile phone and Click to enter.

2. After entering the camera photo interface of Xiaomi 6 mobile phone, select "shooting options" to enter.

3. After entering, find the "Dual Camera Watermark" item and turn on the switch.