“Screen-of Gesture” this is exemplified on OPPO Joy… It also can be applied to other OPPO devices that use the ColorOS such as OPPO Find 5, N1, Neo 3 and more
How to use Screen-of Gesture on OPPO?
Please go to Settings – Gesture & motion – Screen-off gestures – and select type the of pattern gesture to active apps or feature OPPO device
how to remove &change the gesture
How to remove screen off gestures?