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Troubleshooting – Samsung SGH-I257ZKAATT User Manual

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Locking the Device Manually

� Press the

Power/Lock Key.

Unlocking the Device

1. Press the

Power/Lock Key.

2. Swipe across the screen as shown.

Note: You can customize the Lock screen and set the type of

Screen Unlock you want to use (Face unlock, Face and
voice, Pattern, PIN, or Password). For more information,
refer to “Lock Screen Options” on page 156.

Troubleshooting

If your device has fatal errors, hangs up, or freezes, you may
need to reset the device to regain functionality.

� If your device is frozen and unresponsive, press

and hold the

Power/Lock Key for 8 to

10 seconds.

15

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