My microphone and earpiece aren't working

The microphone and earpiece on my OnePlus 3T aren’t working. People don’t hear me when in call and all I can hear is just noise from the earpiece. The headphone jack doesn’t work either. The only way I am able to make calls is via Bluetooth.

I suspect it is caused by the audio chip because i have replaced the earpiece and the daughterboard and ribbon cables but that didn’t solve the problem.

I have a broken OnePlus 3 does anyone know if i can replace the audio chip? Where is it located? Is is the same for 3 and 3t and can they be interchanged? Thank you!