My phone pattern locked and asking unlock pin

Why would you want to do a Factory Reset?

Malfunctioning device (resetting the phone to original settings may fix numerous issues)

Wipe personal data off before selling

Returning it to manufacturer or retailer and want all personal data removed

What to do before you do a Factory Reset?

Backup any important files to your PC or external storage

Make sure your contacts are synced with your Gmail account

Write down a list of apps you may want to reinstall

Step-by-Step Instructions:

From the home screen, click the MENU button

Click on SETTINGS

Select the “SD & Phone Storage” option

Click on “Factory data reset” located at the bottom

Final Warning: This next step will wipe all the data off of your device. You are also given the option to check mark whether you want to wipe all data from the SD card.

Click on “Reset Phone” to finalize the Factory Reset

Done!

another option

To do a factory data reset, follow these steps:

If your phone is on, turn it off.

Press and hold the Volume up button and the Power button at the same time until the device turns on.

Press the Volume down button to select "Recovery mode." If you need to navigate to the "Recovery mode" option, use the Volume up button to move the arrow and the Volume down button to select it.

You’ll see an image of an Android robot with a red exclamation mark and the words "No command."

While holding down the Power button, press the Volume up button and release it.

Use the volume buttons to scroll to "wipe data/factory reset" and press the Power button to select it.

Scroll down to "Yes - erase all user data" and press the Power button to select it.