Make sure your printer supports AirPrint
Connect your iPhone and printer to the same Wi-Fi network
Open the app you want to print from
Tap the Share icon or the More icon
Tap Print
Tap Select Printer
Choose your printer from the list
Set print options if needed
Tap Print
If your printer does not support AirPrint, install the printer manufacturer’s app from the App Store
Open the manufacturer’s app and follow the setup steps
Add your printer in the app
Print from the app or from the iPhone share menu if supported