Microphone issue after Charging port Repair

問題

Charging port inop

修理

The directions were pretty clear and straightforward. However, I am now having microphone isssues suiting regular phone calls(non speaker phone).

アドバイス

My friends tell me I'm muffled until I use speakerphone which they can hear me fine. Not sure how the primary microphone is supposed to sit inside the phone but it looks like it is not secured tightly. Any help with this matter is appreciated.