Hard reset your Android phone or tablet when you forget the passcode or lock pattern
Method : 1 (Basic Reset)
Open your device’s Settings. The Settings app can have varying icons depending upon on your specific device, and may be also found within the App Tray or by pushing the phone’s dedicated menu button.
Find your Factory Reset option. Depending on your device, the “Factory data reset” feature may be located in one of two sections within the Settings app: