I have a Verizon iPhone 4. Got it the first day Verizon started selling them over 2 years ago. Followed the guide. Completed the task in 10 mins. The battery adhesive must have weakened some. Did not need to use pull tab at all. Just the pry tool along the outer side of battery as mentioned by other users. Thanks ifixit!! Saved me a contract slot. With a family of 4, that is a big savings.