Be very careful your tool does NOT go in between the screen and the screen frame but rather in between the screen frame and the phone frame. If not you will damage the screen and need a new one. This has happened to MANY people. The screen is attached to the screen frame with an adhesive that can also be accidentally pried apart if not done carefully. This is probably more likely if your tool is too thin, if you dont heat enough, or dont suction and pull enough to create a big enough separation between the screen frame and the phone frame.