KOCASO M750 - Manual (Page 12)

7
8. Screen lock interface
Long time no using device or short press power button, the device will
access to standby state. There are two states: first is deep sleeping
VWDQGE\WKHGHYLFH¶VVFUHHQLVWXUQHGRIIWKHn need to press power
button to enter standby screen, for example the above picture, press
the red unlock.
Switch it will display the point A\B as above picture, press A point
for camera using ,press B for unlocking ,it show as B condition ,press
unlock button to B will realize unlocking function ,press unlock button
to A to use Camera function.
B
A