How do I enable Wi-Fi Direct mode on my ET-3850U?
Press the home button, select the network icon and press OK, then select Wi-Fi Direct. Scroll down and select Start Setup. You can then use the Epson Smart Panel app or manually connect using the displayed SSID and password. The blue Wi-Fi Direct icon will appear on the LCD screen when enabled.
From the official Epson EcoTank ET-3850U All-in-One Wireless Printer manual, page 40
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