I used to receive a text, take my phone out of my pocket, and read it right on the preview screen (the swipe to unlock screen). If the text didn't require a reply, I'd just put the phone back in my pocket. Now, I have to take my phone out, read it on the preview screen, then unlock my phone and go to SMS section to tell the phone that I have read it or else I'll get 2 additional SMS alerts. If I don't unlock the phone and go to the SMS section, the additional SMS alerts sound just like a new text message, so I'm not sure if it's letting me know of the first text that I didn't actually go through and look at, or if it's a new one. Why is this not a setting I can disable? I can see how some people would like it, but not everyone. I just hate having to unlock my phone and go to the SMS section every time even if I already saw the text on the preview screen.