It’s nice to know when you receive the latest urgent text message from your significant other, but seriously do you need a reminder after each one comes in after receiving the first alert? I don’t think so and you’ll agree if you are like me, since I receive a lot of text messages.
You can effectively muzzle that second alert notification for iMessage by performing the following steps:
Launch the Settings app.
Tap Repeat Alert.
Now you’ll never receive a duplicate alert for every future text message you receive in the Messages app. If you receive as many text messages a day as I do you’ll be glad that your incoming messages only alert you once and not twice by default.