Samsung Pattern Unlock tool free download here
This tool free for all who known about this software it's is very easy to use without any risk just insert usb cable in to device and click on button you want to and many model support in this tool just plug in turn on condition and insert usb cable and click on button you want to do, see below which model support in this tool.
Samsung Unlocker tool download here
Support Model:All Android
Which Model Support Lists: