Hey There, I called and received an unlock code from sprint for my galaxy s3 but have no idea how to go about using it. I am trying to leave Sprint to go to Net 10, straight talk, basically any no contract plan, not on sprint network (reception SUCKS!!) I do NOT have a SIM card in my phone and it seems that's all anyone posts about unlocking, galaxy phones with SIM cards. Any help would be GREATLY appreciated. I can't take sprint anymore! I don't even have reception in my own house! Thank you.