Remove gesture (pattern) lock from any android device

It is very irritating when you forgot your pattern and many wrong try leads to verify your identity by entering your registered E mail and password. Everything is OK when you know the Email and password.
But the problem is when you have no idea of your Email . This is the new method comes.

There is a mode in android called recovery mode which can be boot by different key combination in various devices.

If you have samsung device then following key will work

press vol up home and power button  simultaneously .When the device vibrates or logo comes then release the buttons .
A menu will come here touch will not work . you have to navigate by your volume and power button

vol up = go to up
vol down = go to down
power = select

now you have to go to factory reset /wipe data option
click power button
then you have to select yes
then click power button
it will take few seconds to process.
now go to reboot option
and you are done

WARNING -: IT WILL ERASE ALL YOUR DATA OF SDCARD                                AND PHONE. AS IT WILL RESET YOUR                                       PHONE AS IT WAS IN NEW.
thanks for reading pls comment.