Samsung CAPTIVATE SGH-I897 - Manual (Page 114)

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Screen Unlock Pattern Settings
To secure data and limit phone access, set the phone to require a
screen unlock pattern each time you turn on the device, or every
time the phone wakes up from sleep mode (when the screen
automatically turns off).
Set unlock pattern
Creating a screen unlock pattern increases security on the
phone. When you enable the User visible pattern field, you will
draw an unlock pattern on the screen whenever you want to
unlock the phone’s buttons or touch screen. When you activate
the Use tactile feedback field, you feel vibration as feedback
while drawing the pattern.
Note: Make sure the Require Pattern field is activated.
Require pattern
Turning on the Require Pattern option protects your phone from
unauthorized use by creating a personal screen unlock pattern.
Use visible pattern
When enabled, this feature displays the text entered into the
password field.
Use tactile feedback
When this option is enabled, you will feel vibration as feedback
while drawing the pattern.
Set up/Change password
Use this option to set up your password when one is first required
or change your current password.
1. From the Home screen, touch ➔ Settings ➔ Location
and security ➔ Set up/Change password.
2. Enter a new password and touch Confirm.
3. Enter the new password again and touch Confirm.
Set 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 Home screen, touch ➔ Settings ➔ Location
and security.
2. Touch Set up SIM card lock.