How to unlock your Android when Pattern/Pin/Password locked?

(සිංහලෙන් කියවන්න මෙතැනින්.)

How to unlock your Android when Pattern/Pin/Password locked?

This post includes 3 ways to unlock your device when it is locked.

1. Entering your Gmail address and password.

2. Performing a Factory reset.

3. With your PC.

1. All you have to do is, just enter your gmail address and password when pattern locked. But most users turn off data on their devices to conserve data and battery. So this method will work only if your device is connected to the internet.

2. So, this is a best way to unlock your device when it is not connected to the internet. But it will erase your data on your device, including apps you have installed. But this will not delete your music, videos, photos etc. And also pre-installed apps.

Steps:
• Turn off your phone/device.
• Remove the SD Card.
• Press and hold the volume down button and the power button at the sae time.
If your device doesn't displays the boot options, try another combination as follows.
  *power + volume up + home
  *power + back button + menu
  *power + volume up
  *power + volume up + volume down
  *power + home

• Navigate through the options with volume down button and select "android recovery" option with volume up button.
• volume up button.
• Now you will get the Android recovery Screen. (In some models you may have to press both vol.up + vol.down buttons at the same time to go to recovery mode.
• Select wipe data/factory reset and press ok with power button. (In some models you can press "Ok" with home button.
• Select "yes" from the new screen and press "OK".
• Go back and Select "reboot now", then select "yes" / "ok".
• You are done.

3. You can unlock your device without resetting with your PC.
You need to download,
  *Android multi tools
  *Universal ADB drivers
• Unpack the tools and install adb drivers.
• Connect your device to PC with USB Cable.
• Press 1 to check if your device is connected properly.
• Press 2 if it's locked with a pin/facelock/password or press 3 if it's a pattern lock.
• Your device will reboot(restart) now.
•After restarting, pattern lock screen may display. No matter and drow ANY pattern you like and unlock your device.

*****Important*****
• Only the 3rd method is an abstract from another site and it is not proved by me.
It's from: xda.developers.com
• Steps to go to the recovery mode may vary with the phone model.
• Only unlock if you get permissions to do so. Otherwise DO NOT unlock others devices to explore/intrude their privacy.