Make sure the printer supports AirPrint or wireless printing
Connect the printer to the same Wi-Fi network as the iPhone
Turn on the printer
Open the app you want to print from on the iPhone
Tap the Share icon or the app menu
Tap Print
Select the printer
Choose the number of copies and other print options
Tap Print
If the printer does not appear, restart the iPhone and printer
If needed, install the printer manufacturer’s app from the App Store
Use the app to add the printer and print wirelessly