I replaced my old battery with the one I bought here in iFixit. I replaced the battery according to the instructions of this guide (Using a guitar string did the trick when removing the battery) and finally assembled the sensor ribbon. Turned on the phone and SURPRISE! Error, Touch ID Does Not Work. I was disappointed, in the most part because I was extremely careful, it's not my first repair, and I did not break the ribbon, the Home Button was working properly.
I spent 4 hours re-seating the ribbon and putting in place the metal bracket.
For you guys, who have lost Touch ID but didn't break the sensor flex cable AND the Home button works, I thing I have found a SOLUTION:
As you can see in the picture (link below), a grounding Tip under the screw MUST be in THIS POSITION. If misaligned it will not work. Mine was misaligned during the display disassembly (STEP 16) and this was the solution. A smile returned to my face.
Sobald er das hat, wird er in der Lage sein, eine Grafik zu seiner im Laufe der Zeit erlangten Reputation zu sehen.
Hier ist eine Vorschau, wie die Grafik aussehen wird:
Noch keine Reputation erlangt.