HD voice calls on the iPhone 5
The sound quality was amazing. Initially i was taken-aback and thought I must have switch on the loud speaker. A quick glance at my phone's screen showed that I hadn't. The crispness of the sound is startling when compared to the audio quality of phone calls I ever have before. It was like someone whispering into your ear but talking at regular volume.
Now I'm not a heavy voice caller, but I have to say HD voice needs to be heard to be believed.