For Android users:
The method for closing the application depends on your Android device. Please refer to the device manual for specific information.
1. Open the recently used application interface.
2. Find the application you want to close.
3. Swipe the app left or right to close the app.

For iOS users:
1. If you are using an iPhone X or later, or an iPad running iOS 12 or later, or iPadOS, swipe up from the bottom of the screen. On iPhone 8 or earlier, double-click the home button to display your recently used apps.
2. Swipe left or right to find the app you want to close.
3. Swipe the app upwards to close the app.