Any body with repairing phone experience here? topic

I cracked my screen so I ordered a new one. Taken the phone apart to replace the screen lcd was easy but when I finished putting it all back together and turned it on the microphone doesn't work. I have taken it apart more than 3 times already to see what is the issue.

Microphone doesnt seem to be ripped or broken. So i was just wondering what to do,

Will take some close up pictures and upload them if you like.