Why is the response speed of OPPO mobile phone getting slower and slower?

The mobile phone runs slowly when it is turned on. Please refer to the following methods for troubleshooting: 1. Clean up the programs running in the background of the mobile phone in time. 2. There are many plug-ins and software installed in the mobile phone, and the data loading is very slow when it is used. Please uninstall some software properly. 3, set the animation effect, when the mobile phone is slow to use, if there is dynamic wallpaper, you can turn off the animation or uninstall the wallpaper; 4. Back up mobile phone data (contacts, text messages, etc.). ) and restore the factory settings; If the problem still exists, please take the purchase invoice, warranty card and machine to the OPPO customer service center for testing, and professional engineers will solve it for you.