On your phone: Settings > General > Accessibility > Assistive Touch (turn on)

After you do this, a small square with a circle in it will show up at the bottom right of your phone’s screen. When tapped, this button will open a menu with a few shortcuts, one of which is the home button.

If the Assistive Touch button is in your way, you can simply drag it to another place on the screen. It will snap to corners, or to the long edge of the screen.

This little tip can make a practically unusable phone usable again if your home button dies, like they eventually tend to do.