Why does my iPhone 6 keep cutting out in the Chicago area?

[iMore Question]

My new 6 cuts out so callers cannot hear me. They say my voice is garbled or they cannot hear me at all. I can hear them just fine. This problem happens more often than not. I took the phone into Apple Store but they could not replicate the problem. Any ideas how this can be fixed! Thanks!
Sue

 

[Speedygi]

Re: IPhone 6 cuts out Chicago area

Which carrier are you on? I'd imagine most carriers would work well in Chicago...