65 Lock Screen and SecuritySettingsUnknown SourcesEnable installation of non-Google Play applications.1. From a Home screen, tap Apps >Settings.2. Tap Lock screen and security >Unknown sources to enable this option.Warning: Enabling installation of third-partyapplications can cause your device and personal datato be more vulnerable to attacks by unknown sources.Other Security SettingsChange other security settings, such as those forsecurity updates and credential storage.Encrypt Your DataRequire a numeric PIN or password to decrypt yourdevice each time you power it on.1. From a Home screen, tap Apps >Settings.2. Tap Lock screen and security > Other securitysettings > Encrypt device, and follow theprompts to encrypt all data on your device.Encrypt Your SD CardRequire a numeric PIN or password to decrypt yourSD card.1. From a Home screen, tap Apps >Settings.2. Tap Lock screen and security > Other securitysettings > Encrypt external SD card, and followthe prompts to encrypt all data on your SD card.View PasswordsDisplay password characters briefly as you typethem.1. From a Home screen, tap Apps >Settings.2. Tap Lock screen and security > Other securitysettings > Make passwords visible to turn thefeature on.Security Update ServiceAutomatically receive security updates.1. From a Home screen, tap Apps >Settings.2. Tap Lock screen and security > Other securitysettings for the following Security updateservice options:• Security policy updates: Automatically ormanually check for security policy updates.• Send security reports: Send security reportsto Samsung through Wi-Fi for threat analysis.Device AdministrationManage your device administrators and applicationinstallation privileges.1. From a Home screen, tap Apps >Settings.2. Tap Lock screen and security > Other securitysettings > Device administrators.3. Tap Android Device Manager to allow it to lockor erase a lost device.Credential StorageManage your security certificates. If a certificateauthority (CA) certificate gets compromised orfor some other reason you do not trust it, you candisable or remove it.1. From a Home screen, tap Apps >Settings.2. Tap Lock screen and security > Other securitysettings for the following Credential storageoptions:• Storage type: Select a storage location forcredential contents.• View security certificates: Display certificatesin your device’s ROM and other certificatesyou have installed.• Install from device storage: Install a newcertificate from storage.• Clear credentials: Erase the credentialcontents from the device and reset thepassword.