The speaker in the ear piece (not at the bottom of the phone) has has stopped working?
When on calls, I can't hear the recipient but they can hear me? When on loud speaker it's fine both ways. And when using wired or bluetooth earphones it's fine also. It's just normal calls that are affected.
This is a pretty big issue for me at the moment, not being able to hear someone talk whilst on a call renders the process completely useless.
I am still under warranty, could this be fixed? If so, would I still be charged for repairs?