My kids used my phone when I was out of my home. When I came back, they have used wrong pattern lock/password on my Samsung Galaxy S6 phone. I don't remember my gmail ID added to this phone, this has been setup by the shop owner friend. I don't use this phone for my business or personal purpose. Just for Internet access and camera uploads. How can I re-enter into the phone and change the pattern lock or password. Forgot PIN.