Because the home button don't respond anymore and it's really frustrating.
The guide was really clear.
The only problem is that after the installation of the button the button respond when you touch it, but don't work when you push on it and sometimes apps close when I'm working on it or the voice function starts.
I'm gonna re-open my iPhone and I'm gonna search the problem.
Follow the guide step to step and set notes to the screws on every step.