Standby interface-long press the screen to pop up the main screen interface-wallpaper-select "lock screen" in the upper left corner-select pictures from photo albums or built-in wallpaper.

Mode 2

Settings-(Display/Display and Wallpaper)-Wallpaper (Wallpaper)-Select "Lock Screen"-Select the picture source.

point out

The operation paths of different models of mobile phones may be slightly different.