How do I prevent iPhone from alerting twice when a text message arrives? How do I prevent the iPhone 5 from beeping twice when a text message arrives?

It beeps twice when there is a new message. I only want one notification. How do I have only one notification instead of two? It plays the notification sound, waits about 2 minutes, then plays it again if the phone is not touched. How do I turn double notification sounds off?
Settings App -> Notifications -> Messages -> Repeat Alerts

change that to "never."  :-)

Let me know if that helped...