I did not need to remove the battery. The power button, headphone jack, volume rocker, and vibrate switch were all accessible with the battery still in place.
For step 20, not all of the screws in my phone were the same length. The far right screw in the picture is a longer screw than the others.
Once they have, you'll be able to view a graph of their reputation gained over time.
Here's a preview of what the graph will look like:
No reputation gained yet.