I damaged my LCD following these instructions ($160 for replacement). There is NO need to disconnect the LCD to replace the battery. Instead, carefully open the case as shown in steps 1- 4 without prying up at the end opposite to the home button at all (this region contains a ribbon cable for the LCD that is very fragile). Raise the LCD screen no more than 90 degrees (see photo for step 7) and follow steps 6-7 and 9-12 (skip steps 8 and 9), pull up on the plastic tab to remove the existing battery (do not follow step 13), insert the new battery, and replace the battery connector and bracket (reverse of steps 11-12). Press the LCD back into the case and replace the Pentalobe screws. That’s it.