When the wireless router is connected to the same network as the printer, you can operate the printer via the wireless router from your smart device.
Operations may differ depending on the device.
If Epson iPrint is not installed, install it.
Connect your smart device to the same wireless network as your printer.
Open the web page you want to print in your web browser app.
Tap Share from the menu of the web browser application.
Select iPrint.
Tap Print.