Sounds cuts out during a call
The sound cuts out on my iPhone X about fifteen minutes into any phone call. I don't think it's a carrier problem, because the microphone continues to work - the person on the other end of the line can hear me - but, I cannot hear them. I have iOS 11.4.1 and have reset the phone, but it didn't help.
Any ideas on what I could do to fix this?
iPhone X, iOS 11.4.1