Chosen Solution

iphone 6 earspeaker has no audio at all (phone is not on mute.) I have taken the screen off and put it onto another iphone 6 and the ear speaker is audible with no issue, what could be my issue?

This happened on my iPhone 6 once actually. What happened to mine was a drop of water (rain) got inside the headphone jack and the phone thought I had headphones plugged in so I wasn’t getting any audio. If you press volume up/down it will distinctly show if there’s headphones or not. Might be way off but worth a shot. I ended up sticking a small piece of tissue in there and wiping around and it worked again.