How can I open my Galaxy, it says that I need a pin but I never had one?


AC Question

my phon ask for pin after 3 manth i open my samsung galaxy s5 phon ?what can i do pls

hi I have Samsung galaxy I did not use it at least more than 5 month ,in this time I was thinking to give it to my girl friend I open it up ,but it has asking for pin? before I did not set it by pine?
please could u help me to sort it out?