Confirmed, speaker phone sucks as well..

[anon(552018)]

iPhone speaker phone is amazing, I can just chat while laying in bed with the phone on my chest, no one can tell.

With this phone, within 15 seconds the other person is like "Why am I echoing" *takes it off speaker* "Oh thats way better."
Upset.

 

[Reggie]

So you bought the wrong phone -why???

 

[Johnny D]

Try Turning off noise reduction/canceling under advanced menu once the call connects.