I have a Samsung Blast by Tmobile for several months now and never had problems with it till now.. I used my phone this morning, and it was working fine. Then I used it again this evening and my password to unlock my phone wasn't working. I never changed the password nor did the phone ever leave my person. I cannot get back in my phone, and the password is not the one I've been using for several months now. Please help. Thanks in advance.