Originally Posted by CSO
Well, it turned out to be the OS. I had installed 18.104.22.1689/22.214.171.1244 (AT&T Official) and I eventually had this problem. Yesterday I upgraded to 126.96.36.1994/188.8.131.527 and this and other problems went away.
Well, not the OS, as I've once again experienced the problem. VERY strange. Rings fine if out of the holster, and vibrates fine in the holster, but won't do tone/ring while in holster. Also, it only vibrates once even though I've got it set to do so twice.