My wife's iPhone 6 has a had a hard year. She first dropped it and shattered the screen. Doubting if I could nail the repair myself, we turned to a shop in the mall for repair. The parts were never right. The screen had a blue tint, it never sat correctly, and the install didn't seem right. In the end, a two foot drop to a thick carpet caused the screen to shatter.
I decided to try my hand at the repair because at this point, why not?
I'll say the repair was a bit more dramatic than I would have liked. I replaced both the screen and the battery and that was seemingly going ok until I realized that when you buy the part only for the battery, it doesn't come with adhesive.
I tried to use double sided tape to secure the battery but that was too bulky. In my impatience, i didn't fully disassemble the phone before trying to remove the tap. As I rushed to complete the task, the screen slipped in my hand and ripped the home button cable.
Fortunately that's not the end of the story. After breaking the bad news to my wife that I couldn't fix the phone... I realized that there was a small chance I could take the cable off the old display assembly. I watched a few videos on replacing the home button cable and was able to salvage the part.
Advice for folks doing the repair.
1. Don't give up. There may be a way to make the repair.
2. Take your time. The fastest way to do something is to do it once.
Advice for iFixit. Please declare the need for adhesive loudly on the parts only version of the battery description. I had no clue and I would imagine most of us won't have done that repair before.