In this application you will find some special hidden features of Oppo Smartphone's own UI Color OS that you have never used. After using these features, you will enjoy using the OPPO phone Color OS is a software that has been made of Oppo itself, which gives you the feature that you are enjoying. Best OPPO smartphones OPPO Find X OPPO F9 pro OPPO F7 OPPO F5 OPPO A83 Pro OPPO A3s All oppo smartphone Hidden tips and tricks...