If my iPhone is unlocked and I upgrade to iOS 7 will I have to unlock it again?

If my iPhone is unlocked and I upgrade to iOS 7 will I have to unlock it again?

Well it depends, If your phone is factory unlocked you won't have to worry. It will stay unlocked. But if you jailbroke it to unlock it, then you will have a problem and you may not want to update because you WILL lose your unlock

Hope this helped!

Have you tried it? I want to do it but don't know if it's safe