Samsung Galaxy Tab E - Device Security

Settings 255
Device Security
Configuresecurityforyourtablet.
1.
Fromhome,tapApps >Settings >Lock screen and security .
TheLockscreenandsecuritysettingswindowdisplays.
2. TapON/OFFnexttoUnknownsourcestoenableinstallationofnon-GooglePlayapplications.
Warning:Enablinginstallationofthird-partyapplicationscancauseyourdeviceandpersonaldata
tobemorevulnerabletoattacksbyunknownsources.
3. TapOther security settings.