I still have a 3G and am pretty unhappy with the audio quality as compared to playing the same lame encoded mp3's in my Mac Book Pro. Can anyone _qualified_ to provide more details elaborate?
I found the following information which implies the sound quality has at least changed.
iPhone 4
Cirrus Logic 338S0589
http://www.ifixit.com/Teardown/iPhone-4-Teardown/3130/3
iPhone 3Gs
????
iPhone 3G
Wolfson WM6180C
http://www.ifixit.com/Teardown/iPhone-3G-Teardown/600/3
I found the following information which implies the sound quality has at least changed.
iPhone 4
Cirrus Logic 338S0589
http://www.ifixit.com/Teardown/iPhone-4-Teardown/3130/3
iPhone 3Gs
????
iPhone 3G
Wolfson WM6180C
http://www.ifixit.com/Teardown/iPhone-3G-Teardown/600/3