Each SIM card has its unique default PUK code and it can be provided only by respective mobile network.So, do not try any PUK generating software online. Dialog, Mobitel, Etisalat, Hutch, Airtel are the leading mobile network providers in Srilanka. The SIM cards provided by these networks are equipped with a PIN number to ensure security of the customers. If you enter the PIN code wrongly for three times, then the phone will be locked and ask for PUK code. If you enter PUK code wrongly for 10 times, then the SIM will be permanently blocked and you have to buy a new SIM . So, In order to retrieve your PUK code and reset the PIN number , follow the procedure provided below for your network. >Dialog By default the PIN number for all Dialog SIM cards will be 531531 . But now if it is locked , then you have to reset. In a piece of paper, note down your SIM number printed on the SIM card. If you are calling from another Dialog mobile, then ca