I'm trying to switch my phone over to straight talk and I know I have to go to stbyop.com to register the phone first but every time I enter in my zip code it says that Straight Talk doesn't provide coverage in that area. However, I know SEVERAL people that use Straight talk in the same zip code. I've also tried using other zip codes and it still doesn't work.
Read more: How to switch my Sprint Galaxy S4 over to Straight Talk?