Connecting iPhone to wireless printer HP DeskJet3720
How do I connect my iPhone to wireless printer
iPhone 12 Pro Max, iOS 14
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Your printer is one of many Apple lists as capable of AirPrint. This means that you do not have to confiture it or your phone to print successfully.
If you start to print from your phone when your printer is active on your wi-fi network you should be able to select it in the dialogue boxes.