How do I force to stop an app on Android?

steps to force to stop an app on Andriod

1. On your Android device, open the Settings app.
2. Tap Apps, Applications, or Manage apps after scrolling through the list.
3. (optional) Tap Application Manager on some devices, such as Samsung.
4. Find the program you want to force quit by scrolling through the list.
5. Press the FORCE STOP button.