iFixit to the rescue

Mi Problema

Microphone on iPhone 4 stopped working

Mi Solución

Easy repair, took about 15 minutes total. Part worked great. Ordered the part originally from a competitor and it was defective (twice). Will only be using iFixit from now on.

Mi Consejo

Be careful of the ribbon cables and adhesive. They tear easily, found this out when I first started repairing iPhone's.