iPhone 6 local echo on incoming call from landlines

No progress yet. Still waiting to hear from Apple Engineering. Heard from one person on Verizon who hasn't heard this problem. Are you on T-Mobile?

Same here. I loaded 8.1 and I still get the echo on incoming calls from a landline. I can call the landline back and I don't get the echo. Odd thing. The 3rd time I tried it, I got the echo on the first couple of words and then it stopped. It seemed to fade away on the third word. This happened twice. Then back to constant echo on the next incoming call. I had a couple of people call me from different locations and got the echo each time. I once again verified that I don't have the echo problem on incoming calls from a cell phone. I have an iPhone 6. Calakato said that his echo is on an iPhone 6+ but his wife's iphone 6 is OK. I am guessing that both are on T-Mobile. I am not using WiFi calling and I also turned off "Phone" under Cellular Settings - didn't help. I going to try to follow up with my open case that was referred to Apple Engineering on Oct 2nd.

I called 800-MYAPPLE and talked to a Sr Adviser. It appears my case was not escalated to Apple Engineering. He called me from his landline and I did not hear an echo. But he is calling long distance and that type of connection is not a complete wired connection end to end so maybe that is not a good test. All my local landline tests across town (Denver, CO area) has produced an echo of my voice on my end only. The Apple Retail Store and T-Mobile both heard it. I mentioned that one person on this thread said that his wife's iphone 6 was OK but that his iphone 6+ had the echo problem. So this appears to be one of those odd issues that may be hardware or it may be the carrier. The Apple Adviser is going to do more checking and get back with me tomorrow. I mentioned that if Apple thought this was a T-Mobile issue, then I would still need help proving it. Meanwhile, everyone with this echo issue, please open a case with Apple if you haven't already.

I have not heard back from the Apple Sr Adviser yet. This morning, every call from my home landline, which always had an echo, worked better. When I answer, my first word (hello) echos back to me, then it stops. Tried this several times from a wired phone and a cordless phone at my home. This initial echo happens when I am called from my home landline when I am at home and when I am at work. This one or two word echo has happened only once before about a week ago, then the full echo returned. It appears something may have changed today. I called T-Mobile this morning. They do not have any reports about this problem but they do have a voice quality open case in my area that may be related to a transport problem. It has been open a couple of days. I gave them my Apple case number and they are going to submit a service request to the T-Mobile Engineering Dept. I was told that T-Mobile Engineering could contact Apple with my Apple case number. I was given a 72-hour resolution time. I am in the Denver, CO area with CenturyLink as my home phone service provider.

Still not heard back from Apple. T-Mobile says the transport trouble was fixed. I mentioned that I still have an echo issue so they opened a new ticket. The last few days my echo issue changed as I mentioned in the Oct 22nd post. It continues to act the same where I hear my hello echo back to me when I answer, then the echo stops for the rest of the call. This has been consistent the last few days. This is an improvement. Maybe this is related to the transport issue T-Mobile had been working on in my area. If it is, then what is causing this echo issue for everyone else? Summary: The day I called T-Mobile and was told that they were working on a Transport problem causing a voice quality issue is the day my echo changed from the entire call to just the initial answer.