Samsung SGH-T989ZKBTMB - Manual (Page 275)

Security
The Security settings allow you to determine the security
level for your device.
Encrypt Device
When enabled, this feature requires a numeric PIN or
password to decrypt your phone each time you power it on or
encrypt the data on your SD card each time it is connected:
1. From the main Settings page, tap Security.
2. Tap Encrypt device. For more information, read the
displayed help screen.
3. Tap Encrypt external SD card to enable the encryption
on SD card data that requires a password be entered
each time the microSD card is connected.
Tip: Make sure your battery is charged more than 80 percent.
Encryption may take an hour or more.
Setting up SIM Card Lock
Prevent another user from using your SIM card to make
unauthorized calls or from accessing information stored on
your SIM card by protecting the information using a PIN code.
When enabled, your phone will ask for a PIN number each
time you use the phone. Using this option you can also
change your SIM PIN number.
1. From the main Settings page, tap Security.
2. Tap Set up SIM card lock.
3. Tap Lock SIM card, enter your SIM PIN code, then tap
OK.
Note: You must activate Lock SIM card before you can change
your SIM PIN code.
To change an existing SIM Card PIN:
1. Tap Change SIM PIN.
2. Enter the old SIM PIN code and tap OK.
3. Enter the new SIM PIN code and tap OK.
4. Re-type the new SIM PIN code and tap OK.
Changing Your Settings 270