Recently my Android phone navigation key stopped working, and factory reset didn’t do any good at all.
If you have this problem, and in need of a quick fix you can try this temporary solution.
- Access Playstore
- Search for “button savior”
- choose one and install
After installation, a list of navigation button would be available on the side of the screen. Depending on which app you install it can be on the right / left / bottom of the screen. You can use this button as a temporary replacement for the original android navigation button (until you can fix the real problem that is).