Troubleshooting - Samsung SGH-I777 User Manual

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.
For more information, refer to "Android System Recovery"
on page 14.
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