I've experienced better sound quality on my iPhone 5, but I feel the noise cancellation falls short compared to my previous iPhone 4.
For instance, a couple of months ago, I called me friend (on his iPhone 4S) who happened to be at a noisy pep rally. When he answered he told me to wait a second while he walked outside because he couldn't hear a thing because it was so loud inside. I told him, that it sounded like he was in a silent room when he answered, and I was really impressed with the noise cancellation technology of the iPhone 4.
I called the same friend today on his new iPhone 5, and noticed that I could hear all the background noise around him. He was walking in a crowded hallway at school which couldn't have possibly been louder than a room full of cheering fandom.
I've also noticed that often times if I speak softly on the iPhone 5, I am not heard, when on the iPhone 4 I was always heard.
Overall, I find the call experience to be far better on the iPhone 4 than the 5. Anyone else noticing the same things I've noticed?
----------
im on verizon and have had this issue. sounds like the persons voice is going in and out and if i put the speaker close to my ear it sounds like wind blowing and goes in and out
so weird
I have noticed this as well. I'm on AT&T, and have two friends I talk to daily on their 5s. They say they experience the same thing. I find we ask each other to repeat ourselves a lot more on the iPhone 5.