Question: how to connect an iphone to a wifi printer?
Answer: Open the app that you want to print from.
To find the print option, tap the app's share icon — or. — or tap .
Scroll down and tap. or Print. ... 
Tap Select Printer and choose an AirPrint-enabled printer.
Choose the number of copies or other options, like which pages you want to print.
Tap Print in the upper-right corner.