I'm going overseas and wanting to know if I can use my old Samsung m530 cell phone with a new sim card while there? How do I tell if my phone is 'unlocked'? Any advice would be greatly appreciated?
The Samsung m530 is a CDMA phone. It does not use a SIM card. You need to have it reprogrammed if you're planning to use it with a different carrier. But note that there is no assurance that it will work.