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3) Customize the lock screen: Tap Apps >
Settings > Security > Screen lock to show the screen
unlock way.
None – Set no lock.
Swipe – Set to swipe to unlock.
Pattern – Connect at least 4 dots, tap CONTINUE, draw
pattern again to confirm, and tap CONFIRM.
PIN: Enter a 4 digits PIN, tap CONTINUE, enter again to
confirm, and tap OK.
Password: Enter at least 4 characters, tap CONTINUE,
enter again to confirm, and tap OK.
Tap Apps > Settings > Security > Make password
visible, drag to On/Off to make password
visible/invisible.
Tap Device administrators to check and deactivate the
administrator.
Tap Unknown sources , drag to on/off to
allow/un-allow installation of apps from unknown sources.
Tap Install from SD card to install certificates from SD
card.
Tap Clear credentials to remove all certificates.