This guide is only intended to be used as a prerequisite for other guides. It's incomplete by itself.
Introduction
Prerequisite to replace the home button assembly in your iPhone 5s.
Please note that only the phone's original home button assembly will be capable of using the Touch ID functionality. Installing a new home button will only restore ordinary home button functions, not the Touch ID features.
Unscrew the single captive Phillips #000 screw securing the home button cable.
The captive screw is fastened to the home button cable by a spring contact backing. During reassembly, ensure the contact is in the correct orientation—on the side of the screw nearest the LCD.
If your replacement part does not have this captive screw and spring contact, you will need to transfer them to the new cable.