Could you tell me how I can remove unlock password from a tecno feature phone that runs on an operating system other than android? I have seen some technicians local here, able to remove the password without even flashing a new os. They don't delete user data on the phone. What do they do as they don't even use a box? Maybe a special software. They just plug the phone on a PC and do some stuff there. An example of the phone is Tecno T340.