Well, a couple comments:
1. Once I completed the battery replacement and put the iPhone back together, everything is working EXCEPT incoming call ring, in and out going mail & text message sounds. However, audio streaming works just fine!
> could this be the 4 screws in the wrong place? (I missed the screw detail the first time!);
> could this be a not completely seated connectors?
2. The iFixit instructions were incredible....however, one must read and reread the instructions to avoid "oops" situations.