How Do I Lock My AT&T Samsung DoubleTime™ (SGH-i857) Mobile Device?

Follow the instructions below to lock your mobile device.

    Once you have set the screen lock option, the Set screen lock option changes to Change screen lock.  

  • Screen Lock

    You can increase your mobile device's security by creating a screen unlock pattern (disabled by default). When enabled, you must draw the correct unlock pattern on the screen to unlock and regain access to the mobile device.

    1. From the Home screen, touch Applications  > Settings > Location & security > Set screen lock
    2. Select one of the following options.
      • None: disables screen unlock security.
      • Pattern: requires that you draw a pattern on the screen to unlock it. Follow the onscreen instructions.
      • PIN: requires that you enter a numeric PIN number to unlock the screen. Enter a PIN number, confirm it, then touch OK.
      • Password: requires that you enter a password to unlock the screen. Enter a password, confirm it, then touch OK. Password must contain at least one letter.
  • Pattern Lock

    Creating an Unlock Pattern

    1. From the Home screen, touch Applications  > Settings > Location & security > Set screen lock.
    2. Touch Pattern.
    3. Read the information on the screen and touch Next.
    4. Watch the example pattern on the screen and touch Next.
    5. Draw the screen unlock pattern by connecting at least four dots in a vertical, horizontal, or diagonal direction. Lift your finger from the screen when finished.
    6. The mobile device records the pattern. Touch Continue.
    7. When prompted, draw the screen unlock pattern again, and then touch Confirm.
  • PIN Lock

    Creating a PIN to Unlock the Screen

    1. From the Home screen, touch Applications  > Settings > Location & security > Set up screen lock.
    2. Touch PIN.
    3. Use the onscreen keyboard to enter a numeric PIN and touch Continue.
    4. Re-enter the same numeric sequence and touch OK.
  • Password Lock

    Creating a Password to Unlock the Screen

    1. From the Home screen, touch Applications  > Settings > Location & security > Set up screen lock.
    2. Touch Password.
    3. Use the onscreen keyboard to enter an alphanumeric password and touch Continue.
    4. Re-enter the same alphanumeric sequence and touch OK.

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