Hello,
I had the same problem, after change the broken screen the earpiece never worked again.
I'm wondering if I damaged the earpiece or something else. I had very carefull with the flex cable, don't think is broken. Tried to assemble and reassemble everything few times and still doens't work.
Should I order a new earpiece or there's something else I should do?
"Poke 2~3 holes in the middle of the mesh using a fine needle" Din't understand what you want to say with this, can you please send me some photos or explain me better?
Thanks in advance