Hey all, Im here having the same problem on my iphone 8 plus with tmobile, and i noticed a possible correlation from a reddit thread with people having the same problems. One person who is also on tmobile complained of this issue, while another person on the EE UK carrier complained about it as well.
The commonality between these two carriers is that they both support a feature called EVS
(More info here: ) https://9to5mac.com/2017/09/25/iphone-8-enhanced-voice-services-evs/
What carrier is everyone on? Do they know if their carrier supports EVS as well? If apple just now implemented this in the iphone 8, maybe this could be the cause of the issue?
I’m having the same issue on AT&T on my 6S running iOS 11 GM, but it’s only happened in the past few days, but I’ve only been using my Bluetooth Beats X headphones. Anyone else w/Bluetooth? Will try a conf call tomorrow w/regular headphones to determine if there’s a difference.
Hopefully a solve comes soon.