The solution for non-ColorOS version is: go to Settings-General Settings-Installation and Debugging-Developer Options-Display Touch Operation, just turn off the switch that displays touch operation.
The solution of ColorOS version is: You can go to Settings-More-Developer Options-Display Touch Operation, and just turn off the switch that displays touch operation.
ColorOS is an Android-based deep customization system launched by OPPO mobile phone, which is intuitive, light, concise and full of design sense. Moral of color name: Life is full of colors, and smart colors make mobile phones glow with distinctive light and vitality.
Dual-core focusing is the focusing technology of OPPOR9s based on Sony IMX398 sensor. "Dual-core" means that the photodiode in a pixel is divided into two, so that the separated photodiodes can receive light independently, and the phase difference formed is the "basis" for driving the motor to focus. When imaging, two independent photodiodes can be output (merged) as a pixel. Dual-core focusing is like seeing things with both eyes, while ordinary PDAF phase focusing only uses left and right eyes to see things. This means that the light input of a single focusing pixel increases by 100%, and the focusing accuracy and speed will also be improved.
VOOC flash charging is a low-voltage fast charging technology developed by OPPO, with 18 patents. Adopting low-voltage and high-current mode can not only ensure the charging speed, but also reduce the heat of adapter and mobile phone when charging. VOOC flash charging is 4 times faster than traditional charging. 3000mAh battery, you can talk for 2 hours after charging for 5 minutes and 75% after charging for 30 minutes.