iPhone 4 Battery
This part was the most frustrating part of the guide, granted I didn't do the whole thing. I was expecting to slip the plastic separator tool in-between the case and the display. This did not happen and I ate away at the tool in the process. For me after much pushing on the top edge of the case and pulling the screen away it released all of a sudden. I managed to make a dead stop at 90 degrees, but felt like I almost ripped off the ribbon cables(I didn't).