[Optimus One, P500, V General] ccdreadcc:
To set a Pattern lock:

Press the Menu key from the Home Screen

Touch Settings

Touch Location & Security

Touch Set up screen lock (the "simple swipe screen lock" is a different feature and is not a security based lock, it only prevents accidental keypresses)

Select Pattern Lock

Follow the on-screen instructions and draw your lock pattern. When prompted draw pattern to unlock phone.

Set your Security lock timer. (range: Activate when display is off, or set it to lock anywhere between 1-20 minutes)

When set, you will get 5 attempts to enter the Pattern lock before you are given a chance to reset the security lock on the handset with your Gmail account and password.

To set a Passcode lock:

Press the Menu key from the Home Screen.

Touch Settings.

Touch Location & Security

Touch Set screen lock (the "simple swipe screen lock" is a different feature and is not a security based lock, it only prevents accidental keypresses)

Select Passcode lock.

Enter a passcode lock, then tap on the check mark.

Enter the passcode lock again to confirm it and tap on the check mark to implement. Done!

When set, you will get 5 attempts to enter the Passcode lock before you are given a chance to reset the security lock on the handset with your Gmail account and password.

Notes:

If you want your handset to set Pattern Lock or Passcode lock whenever you press the top button, set Security lock timer for "When display is off". The handset display will go to black and set your security lock. Press any key to bring up your security-locked display..

Unlocking the Security Lock when locked out:

Enter the correct pattern or passcode to unlock the handset after a security lock has been set.

If you forgot the pattern or your passcode is not working, the handset will allow you to log-in with the Gmail information you programmed into the handset during set-up.

You will need to try entering a pattern or passcode at least five times. If you fail to draw the correct unlock pattern or passcode on the screen after five attempts, the phone will prompt you to wait for 30 seconds before you can try again.

Press OK or wait for 30 seconds before attempting again.

After you press OK, the lock will come back again with a button on bottom right that states Forgot pattern.

Tap Forgot Pattern.

You will be prompted to sign in using your Google/Gmail account and then to create a new screen unlock. You can skip entering a new security lock.

If you forgot or are unsure about your Google password, but you know your Gmail login or Google account name, you can have Gmail send you a password change request link to your other email address through your computer. Click Here for our detailed FAQ on Gmail password reset. Summary of process is below.

Please use a computer to visit http://www.gmail.com.

From the Gmail login page click on the "Can't access your account?"

Follow the steps in that guide to recover your Gmail login information. Click Here for our detailed FAQ on Gmail password reset

Once your login information is recovered, please use that information to unlock the handset using initial steps above. If you recently created your Gmail account or changed its password, allow up to an hour to try the new password.

Note: You must have had a Gmail account setup on the handset before you locked the handset to reset your passcode through Gmail.

Your phone can still be powered off when locked. Turning the phone back on will return to the lock screen.

If all of the above steps do not assist in unlocking your phone, you can perform a factory reset as a last resort. All the data you have previously entered on your handset (not SDcard) will be deleted and you will need to start new. Contact Motorola Customer Service or your carrier for help in resetting your device back to factory defaults.