iPhone 4S Replacement Battery Flexible Circuit Connector.

My Problem

Battery life non-existent, battery wouldn't even boot new 9.3.5 OS version (new for iPhone 4S).

My Fix

Easy enough with guide, was a bit hesitant about how much to crimp the flexible circuit connector between battery and connector plug. Not much space and a bend has to be crimped into the flexible part to slide into that space.

My Advice

Add step or advice to crimp flexible part, I ended using a flat-bladed screw driver to nudge the flexible part into the space, so the back cover can slide back on. On 2nd iPhone 4S, I pre-bent the flexible part to slide into that space.