yesterday I bought a brand new Huwaeii u8100, and while playing around with it I put a lock on. I go to change the lock and put in my old password then I try some new ones, and then I cancelled by mistake. Now it doesn't accept any password I put in and I don't know if I'm putting the right old one in. I've re input the password 105 times and I've gotten no where. What should I do?