How to bypass Android's lock screen pattern, PIN or password

1. Open Command Prompt

2. > adb devices

3. > adb shell

4. > su

5. # cd /data/system

6. Delete the Following Files

 a. # rm gatekeeper.password.key

 b. # rm gatekeeper.pattern.key

 c. # rm Locksettings.db

 d. # rm Locksettings.db-shm

 e. # rm Locksettings.db-wal

7. Restart the System.