Anyone noticed that when you use a headset connected to the wired audio jack, the volume for calls is low? Listening to music etc. it's fine. Also, my AD2P headset is good for calls and music. Compared to my iPhone, phone calls on this jack are far too quiet. I've tried multiple wired headsets including the one that came with my iPhone and the BOSE ones sold in the Verizon store. Any ideas?