Galaxy TAB S4: How to clear App Cache and Data?
Navigate to Apps screen > Tap Settings > Tap Apps > Tap Samsung Notes > Tap Storage > Tap CLEAR CACHE > Tap CLEAR DATA > Tap DELETE
Pictorial representation of the above settings are as follows:
Note: If an app is not responding, or if there is an app you want to factory reset without uninstalling it, you can clear the app data. Clearing app data can also free up memory space on your tablet.