LG G8000 User Manual page 173

This function allows you to view the duration of incoming and
outgoing calls. You can clear the duration record by using Reset key
after entering the security code.
You need to input Security code to delete it.
<
If you press
received call, and outgoing call. You need to input Security code.
<
If you press
You need to input Security code.
<
If you press
need to input Security code.
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[Reset], you can delete the duration of Last call,
[Reset], you can delete Received call duration.
[Reset], you can delete outgoing call duration. You