This method allows you to connect the printer directly to an iPhone, iPad or iPod touch without a wireless router. The following conditions are required to use this function. If your environment does not match these conditions, you can connect by selecting Other OS Devices. See the related information link below for details on connecting.
iOS 11 or later
Using the standard camera application to scan the QR code
Epson printing app for iOS.
Examples of Epson printing apps
Install Epson printing app on the smart device in advance.
You only need to make these settings for the printer and the smart device that you want to connect to once. Unless you disable Wi-Fi Direct or restore the network settings to their defaults, you do not need to make these settings again.
Tap 
on the home screen.
Tap Wi-Fi Direct.
Tap Start Setup.
Tap iOS.
The QR code is displayed on the printer's control panel.
On your iPhone, iPad or iPod touch, start the standard Camera app, and then scan the QR code displayed on the printer's control panel in PHOTO mode.
Use the Camera app for iOS 11 or later. You cannot connect to the printer using the Camera app for iOS 10 or earlier. Also, you cannot connect using an app for scanning QR codes. If you cannot connect, select Other Methods on the printer's control panel. See the related information link below for details on connecting.
Tap the notification displayed on the screen of the iPhone, iPad or iPod touch.
Tap Join.
On the printer's control panel, select Next.
On the iPhone, iPad or iPod touch, start Epson printing app.
On the Epson printing app screen, tap Printer is not selected..
On the Epson Smart Panel, the smart device automatically connects to the printer when it starts.
Select the printer that you want to connect to.
See the information displayed on the printer's control panel to select the printer.
On the printer's control panel, select Complete.
For smart devices that have been connected to the printer before, select the network name (SSID) on the smart device's Wi-Fi screen to connect them again.