93 SecuritySettingsSet Up SIM Card LockTo prevent another person from using your SIMcard to make unauthorized calls or from accessinginformation stored on your SIM card, you canprotect the information by using a PIN code.When enabled, your tablet asks for a PIN numbereach time you use the tablet. Using this option youcan also change your SIM PIN number.1. From a Home screen, tap Apps > Settings> General tab.2. Tap Security > Set up SIM card lock.3. Touch Lock SIM card, enter your SIM PIN code,then touch OK.Note: You must activate Lock SIM card before youcan change your SIM PIN code.To change your SIM PIN code:1. Touch Change SIM PIN.2. Enter your old SIM PIN code and touch OK.3. Enter your new SIM PIN code and touch OK.4. Re-type your new SIM PIN code and touch OK.View PasswordsDisplay password characters briefly as you typethem.1. From a Home screen, tap Apps > Settings> General tab.2. Tap Security > Make passwords visible to turnthe feature on.Device AdministrationManage your device administrators and applicationinstallation privileges.1. From a Home screen, tap Apps > Settings> General tab.2. Tap Security for options:• Device administrators: Add or remove deviceadministrators.• Unknown sources: Enable installation ofnon-Google Play applications.• Verify apps: Block or warn before installingapps that may cause harm.Warning! Enabling installation of third-partyapplications can cause your device and personal datato be more vulnerable to attacks by unknown sources.Security Update ServiceAutomatically receive security updates.1. From a Home screen, tap Apps > Settings> General tab.2. Tap Security for options:• Security policy updates: Automatically ormanually check for security policy updates.• Send security reports: Send security reportsto Samsung via Wi-Fi for threat analysis.