how to unlock any types of patterened andriod smart phone

there are many types are avialable to unlock a smart phone ,when it is locked
firstly 1/ switch off the phone and press the power buttonn +vollume up button till few second , then a screan will pop up (recovery screan)
and scroll down by volume down button and press ok on the "factory reset"
option with the help of power button, because this time screan will not except the touch facility
power button will work as clickable key
now
following the right option
the phone will factory reseted after a few second or minute

now you are done , your phone is unlocked and looking as fresh as new


if it does not work then try bellow methode


/first of all switch off the phone and remove the  battery and note down the model no and search on the web by any other device
 "how to factory reset .............(device name) ..................(model no) when it is locked"

then you will find the methode in first web result