Bad voice calls (muffled)

I posted yesterday about bad voice muffled on a lot of my calls and hard to understand. Didn't get any responses, so probably not a big problem with the IP6. Yesterday went to Genius bar, Palm Beach Gardens, Fl. and was immediately told I do have a problem and walked out of there with a new IP6 in 10 min. Thanks Apple and Genius employees at the store.

 

Call quality

It now seems to to equal to my 5 that wife is using. Had problems with voice mail quality. but have not tested it yet.

 

Just an update with new IP6

After replacing my 6 last week, I've pretty much determined that voice calls sound different in the 6 vas the 5. A little deeper more throaty sound, which can be more difficult for hard of hearing folks to understand. Voice mail sound is totally different between the 6 and 5. All in all the phone works fine and from landline phones it can be downright hard to understand.