From a Home screen, navigate: Settings > Application manager.
Swipe left or right to access apps; steps apply to the default Home mode.
Locate then select the appropriate app.
If system apps aren't visible, tap the Menu icon (upper-right) > Show system.
Tap Force stop.
Tap Clear data.
Option may not be available for all apps.
Resetting an app or clearing data storage may delete saved info within the app (e.g., calendar events may be lost, sign in may be required, etc.).