Web
To Clear App History Date
To clear App history data that have been made on your Tablet, go to “Settings” 
“Apps”, touch the application whose data that you want to clear 
tap “Clear data” and “OK” and the related data will be deleted from your device.
If you want to clear all operation data, go to “Settings” 
“Backup & reset”
“Factory data reset”
“Reset device”
“Erase everything” and your device will be reset.
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