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How to close the background program?
1. If you set the system navigation mode to Virtual navigation, click the latest application key (if you have not modified it, the right-click navigation box icon will pop up all the applications currently running in the background). Swipe left and right to find the applications that you want to close, and swipe up to close this background program.
2. If you set the system navigation mode to Gestures, you can slide up from the bottom of the screen and then pause for 1 second to pop up all the applications running at the current background.
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