Welcome to Android Central! Are those lines only visible when you're trying to take the picture, but disappear in the actual photo itself? Does the problem persist after a reboot?
If this occurred after an official system update pushed over the air, I would bring the phone to your carrier store and ask them what they can do about it, since it was their update that caused the problem. Remind them that it was working find prior to the update. See if you can get them to replace the phone.