LG -E510 User Manual page 350

Important notice
WARNING
Precautions to take when using
pattern lock.
It is very important to remember the
unlock pattern you set. You will not be
able to access your phone if you use
an incorrect pattern 5 times. You have
5 opportunities to enter your unlock
pattern, PIN or password. If you have
used all 5 opportunities, you can try
again after 30 seconds.
22
When you cannot recall your unlock
pattern:
If you logged in to your Google account on
the phone but failed to enter the correct
pattern 5 times, tap on the Forgotten pattern
button You are then required to log in with
your Google account to unlock your phone.
If you have not created a Google account
on the phone or you forgot it, you have to
perform a hard reset.
Caution: If you perform a hard reset, all user
applications and user data are deleted.