I am having a problem with regoin lock (maybe), i bought my s8 one year back in germany, and i travel back to malaysia twice a year. Everytime i put in a new Malaysia simcard, the phone ask for a 4 digit pin to unlock the phone. I have been staying in germany and have outgoing call for 50 min, and incoming call for 1 hour and 15 min. Why do i require a unlock code to unclok my phone? Tried with new sim card pin, puk and all. The new simcard work completely fine in other phone but my s8.