Comments from people using this guide should be incorporated into the instructions as a new version. Heating up the glue is paramount to avoiding broken back glass, and the fingerprint sensor is likely not to be attached to the back case, so people should move carefully but not get thrown off if it doesn't come up attached to the back.

Exactly the same experience. Made life a little easier.

These comments are spot-on. I never break a phone, and I cracked the back glass following the instructions without seeing these comments first. Heat the back much more than you think you need and go super, super slow.

Just came here to say exactly that. The instructions should be amended to state that: "Get it fully hot and leave it there for at least three minutes solid."