I am using nokia 2680 mobile phone which is with me from the last five months. I was using security code to keep safe my phone from the other people, whenever i want to use my mobile i have to enter the security code and after verifying it get unlock. One day i forgot to lock it and someone changed the code of my mobile phone. Now when i enter my old code it doesn't accept it. I am in a great trouble i am not able to access my mobile phone, please suggest me a solution for this problem.