The iPhone 3GS Dock, Speaker and Mic Assembly is a very popular repair item and now we offer the ultra high quality iBic™ Version.  Because this assembly has so many parts and parts that require soldering, its more susceptible to failure.  Thats where iBic™ Technology comes in. The iBic™ parts are assembled with more care and more thoroughly tested than parts from other Factories.  They cost more, but it can save you some serious frustration and time.