Take the OPPO mobile phone as an example, and check the programs running in the background as follows:

First turn on the phone, find "Settings" on the phone desktop, and click Enter.

2. After entering the settings, find the column of "Application Management" in the drop-down menu and click Enter.

Third, after entering the application management, you can view the programs running in the background.

4. If you need to close the program running in the background, find the program you want to enter and click Force Stop.