For about two months no one can hear me when I'm talking on the phone. I can hear them fine. The volume varies, but works ok on speaker phone. I've rebooted it several times, is not helpful. It doesn't matter if I'm calling a land line or a cell phone, where I am, where the person is that I'm calling.
Thanks for your help!
I had this challenge on my iPhone 6 128GB device however it was the opposite... The volume of the caller was so low I had a hard time hearing them. I setup an appt with Apple via the Apple store application and went to the Genius Bar. They are able to do a test, with their equipment, and verified the volume was super low. Normally Apple would just swap the front panel in store however the day I was there they were so busy they just swapped out my device. You want to make sure your still in warranty and if not Apple will still fix the issue with a fee.
Check to see if your in warranty here: Check Your Service and Support Coverage - Apple Support
Let us know if this helps!