Use the printer’s official iPhone app
Install a third-party printing app
Connect the printer to the same Wi-Fi network
Use Bluetooth printing if the printer supports it
Print through the printer’s email-to-print feature
Use a computer as a print server
Save the file to cloud storage and print from a desktop
Use a USB adapter and compatible printing app
Enable Wi-Fi Direct on the printer
Use a network print service supported by the printer
Check the printer manual for iPhone compatibility options