LG E975 Optimus G User Guide

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5.  Using the hard reset (Factory reset)
If your phone does not restore to its original condition, use a Hard Reset (Factory Reset) 
to initialize it.
1  
Turn the power off.
2  
Press and hold the 
Power/Lock key + Volume Down key on the phone.
3  
Release the 
Power/Lock Key only when the LG logo is displayed, then immedi-
ately press and hold the 
Power/Lock Key again.
4  
Release all keys when the Factory data reset screen is displayed.
5  
Press the 
Volume Key to scroll to the desired option, then press the Power/Lock 
Key to confirm.
 WARNING
If you perform a Hard Reset, all user applications, user data and DRM licenses 
will be deleted. Please remember to backup any important data before 
performing a Hard Reset.
Factory data reset - Erases all data on the phone, except as follows.  In the event 
of device failure or error, your device may record in an error log information about the 
device’s status at the time of the error event.  The information recorded in the error log 
may include data about application names and usage, cell phone location and number, 
GPS status, memory usage and other non-personal device status information.  This 
information is stored on your phone, and can only be accessed by LG if the phone is 
physically returned to LG for repair and service.  The error log information is used by LG 
only to diagnose, repair, and improve LG’s products and services.