Puts the iphone 4 over 3g as ~3x quieter than a nexus s over 3g. (2g is closer, but no one I know uses their iphone 4 over 2g).
From the review: "For a long while, people have complained that the iPhone [3g & 3gs]'s speakerphone volume was too quiet... I'd say the iPhone 4's speakerphone is still loud enough, though calls over 3G are still a bit too quiet. Until Apple increases the gain on 3G calls, iPhone 4 customers who are hard of hearing should invest in a bluetooth headset."
Puts the iphone 4 over 3g as ~3x quieter than a nexus s over 3g. (2g is closer, but no one I know uses their iphone 4 over 2g).
From the review: "For a long while, people have complained that the iPhone [3g & 3gs]'s speakerphone volume was too quiet... I'd say the iPhone 4's speakerphone is still loud enough, though calls over 3G are still a bit too quiet. Until Apple increases the gain on 3G calls, iPhone 4 customers who are hard of hearing should invest in a bluetooth headset."