Apparently that headphone jack module has a Hall-effect sensor that is extremely fragile and will be ruined if you touch it. Oh, and the whole assembly is so fragile you’re suppose to replace it every time it gets removed.
There’s an identical cavity on the other side of the PCB, and another set of three contacts on the PCB on the other side marked + & -. I wonder if an original design called for 2 of these batteries? I wonder if one could wire up a second to those contacts and double the battery life?
So glad I held onto my S5... the last good Samsung phone, and a battery that can be removed without removing multiple layers of glue and risking breaking your whole fscking phone.