Samsung Galaxy Tab 4 10.1 用户手册

98 

Security 

Settings

Security  

Secure your device and protect 

your data with Security settings. 

Device Administration 

Manage your device administrators and application 
installation privileges. 

1.  From a Home screen, tap 

Apps > 

Settings > GENERAL tab. 

2.  Tap Security for options: 

• 

Device administrators: Add or remove device 
administrators. 

• 

Unknown sources: 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. 

Encryption 

Require a numeric PIN or password to decrypt your 
device each time you power it on or encrypt the 
data on a memory card (not included) each time it is 
connected. 

1.  From a Home screen, tap 

Apps > 

Settings > GENERAL tab. 

2.  Tap S

ecurity for options: 

• 

Tap Encrypt device and follow the prompts to 
encrypt all data on your device. 

• 

Tap Encrypt external SD card to encrypt data 
on a memory card (not included). 

Factory Data Reset Password 

Use this option to set up your password when one is 
first required or change your current password. 

1.  From a Home screen, tap 

Apps > 

Settings > GENERAL tab. 

2.  Tap Security > Set up/change password. 

3.  Enter a new password and tap Confirm. 

4.  Enter the new password again and tap Confirm. 

SIM Card Lock 

Lock your SIM card by requiring a PIN. 

1.  From a Home screen, tap 

Apps > 

Settings > GENERAL tab. 

2.  Tap Security > Set up SIM card lock. 

• 

Tap Lock SIM card and enter the PIN. 

• 

Tap Change SIM PIN to change the PIN. 

Passwords 

Display password characters briefly as you type 
them. 

1.  From a Home screen, tap 

Apps > 

Settings > GENERAL tab. 

2.  Tap S

ecurity > Make passwords visible to turn 

the feature on.