I was having issues with my music playing aloud. I attempted replacement as a fix.
The repair went smoothly. it was slight nerve racking since, well, phones aren't cheap. I used the $20 repair kit they sale, it had all the tools I needed.
Everything worked great. However, now that my lower speaker is louder and I still have the same problem I believe that my issue is the docking connector, and that my phone believes it is docked. That is why no music plays aloud but my headphones work perfect.