My adhesive strips tore almost immediately. I ended up using an old membership card as a tool to pry the battery out. I must admit, I did deform the battery - seemed almost unavoidable.

This is frustrating. I heated the lower edge with a hair dryer for 1 min on high about 3-4 times. In between each heat cycle, I rocked the suction cup back and forth. I was eventually able to create significant space for the provided tool. This takes a lot of patience. Once the space was created, it was very easy to remove the screen.

It is a process. I heated the lower area of the phone with a hair dryer on and off (1min each) about 3-4 times before I was able to get the provided tool in.