The hard buttons on the side of my 4s will no longer change the volume. I have checked all the settings and they all are where they are supposed to be. The ringer volume can only be changed from the "sounds" menu and I can watch videos online and change the volume on screen with a slide of the finger. I just downloaded OS 6.1 thinking it may help but it didnt. Any help would be appreciated. Thanks.
BTW: The phone is just over a year old, go figure.
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