- Confirm your phone can browse on the same SSID you want the printer to use.
- Avoid guest Wi‑Fi — client isolation blocks printing.
- If the printer is 2.4 GHz-only, connect it to the 2.4 SSID or temporarily split bands on the router.
- Run the printer wireless setup wizard; print a network page and check for a valid IP.
- After router replacement, forget old Wi‑Fi on the printer and re-add the device on every PC/Mac.
Full service page: Wireless Printer Setup.