Well, maybe I’ll try again in the future but I don’t currently own a Samsung.

I guess the answer to at least one of those is no. Last time I tried a battery replacement, I broke the screen either during assembly or disassembly. I build my own desktop PCs, and have fixed laptop monitors and drives, but every time I attempt hardware repair on something phone-ish, I make it worse (even going back to when I owned an OpenMoko).