This is a how-to for connecting your Enphase Envoy (the oval one with the LCD screen) to connect to a home Wi-Fi network, without using an ethernet cable or the Enphase Installer Toolkit app.
Enphase’s how-to guides give you about 80% of the information you need to do this, below are notes on things I figured out to fill in the other 20%. Their guidance is geared toward installers, while this post is for homeowners who want to connect their Envoy to the home Wi-Fi network and don’t have a WPS button on their router or need to use another option.