Chosen Solution
I replaced my iPhone 4S battery with an iFixit battery following the tutorial to the letter. The original problem was my iPhone just stopped charging, so I assumed it was a bad battery. Obviously, this is not the case. When I plug the phone into the charger (on outlet and laptop) it immediately picks up connectivity and says the phone is charging, but the percentage is slowly dropping, not charging. I thought perhaps the charging dock is bad, but wouldn’t the connection be non-existent if that were the case? What other areas could be the issue, and how can I verify the problem? Thanks!
The low hanging fruit here is the dock connector—these are exposed to the elements on the outside so good chance of failure. Then a second battery. Then you’d think about board repair like charging coil, pry damage etc. If you think about the 30 pin connector, each pin (more or less) does a different job, so it is entirely possible that detection works but not charging. My bet is dock connector will solve on this one. jessa
