Okay so for my text messages I have the tri-tone text sound. Its the one thats been on every iPhone. On my 4S however, when I get a text, the Tri-tone sound will start...then halfway through the sound it will replay it again. Example. Say my text tone is just *beep* My 4S is going *be-beep* When I go to my settings...sounds...it sounds normal. It actually sounds like 2 messages come in at the same exact second.