Alright guys, I've been calling and emailing around trying to find a legit (no rooting) solution to this. Nobody I've found yet has given me a good answer (although sprint tech support was helpful and really tried). Oh and by the way, the AT&T variant allows you to turn off the noise. This might even just have been an oversight on the Sprint version!
So here's what we're gonna do. Make this a vocal problem.
Sprint email support: Email Us
Sprint support phone:
Always be polite, but explain your frustration. Explain that you take pictures in places where noise is distracting and rude like museums, or in an office. Neither Sprint nor Samsung from what I've found has had any reason for this, they just say "it's not a supported feature".
Take the time. Make the calls. Send the emails. We can get this done.
They may take our lives.. but they will never take our FREEDOM!!! ...
got a little carried away there.