Last night, I received a call from a friend who was using her iPhone. The voice quality was muffled & muddy. There was so little frequency information that my friend didn't even sound like herself. She was on the Verizon network. In contrast, calls on Nokia Simbian phones sound crisp & clear. So do calls from my roommate's 5 year old $20 Tracfone. Do all 3 US networks sound this bad when making calls on iPhones? I love my iPod Touch, but I am not willing to pay hundreds of dollars in order to make sub-standard sounding phone calls. I was disappointed to learn that the iPhone 5 will not support voice over LTE as implemented on Sprint's network. Any thoughts?