How to Unlock Your Android Pattern
It is not an easy task to unlock the Android without Losing your Data. requirements for this tricks are
Laptop/PC and Android SDK (click here to download) it is important to run adb commands
USB Debugging must be enabled before the pattern lock. If it is not then this whole process will not work.
1) How to Install Android SDK when you download the package you need to select your computer suitable package like windows 32/64 bit/Mac or Linux etc.
2) after installing the package you need to check the Android SDK and make some settings
see the bellow image in this image you need to select Only Android sdk Platform Tool no need to select all
after that you need to click on install package batter understanding please see the image below:–