Memory
Check the amount of available memory. You can close background apps and reduce the amount of memory you are using to speed up your device.
1.From 
Settings, tap Device maintenance > Memory.
•The used and available memory are shown.
2.To free up as much memory as possible, tap Clean now and follow the prompts.
•The selected apps and services in the list will be closed.
Device security
Enable and configure security services for your device.
uFrom 
Settings, tap Device maintenance > Device security for the following options:
• Tap Scan tablet to scan for security threats.
Settings | 101 |
