How To Fix iPhone 3GS Loud Speaker and Dock Connector If its Not Working

Earlier this week, someone brought in his iPhone 3GS to me saying the loud speaker only produces sound when a call comes in. However, when playing music it doesnt function. Earpiece functions well but loud speaker doesnt work. Right there I checked it and found out that it was the dock connector that had problem. I fixed it within 30 minutes. This is how I did it belowFirst, I got my tools ready