Using Lexmark Mobile Assistant
Depending on your mobile device, download the Lexmark Mobile Assistant application from either the Google Play store or App Store online store.
From the printer control panel, navigate to:
Settings > > Network/Ports > > Wireless > > Setup Using Mobile App > > Printer ID >
Note: If necessary, grant permissions.
Tap Connect to Printer > Go to Wi‑Fi Settings.
Connect your mobile device to the printer wireless network.
Return to the application, and then tap Setup Wi-Fi Connection
Select a Wi-Fi network, and then type the network password.