Replacing iPhone6 Battery with a small screen issue

My Problem

Battery life was inconsistent and generally less than before.

My Fix

Replacing the battery was great with very minimal problems. There was an issue with the screen when reattaching but it was reversible.

My Advice

When reattaching the screen, make sure the pins are reattached securely (especially the first/bottom one of the three that are on top of each other). I thought the screen had some broken pixels but realized it was a connection issue.