Unable to print from iPhone after iOS 18.3.1 update

It appears that the iPhone cannot find any AirPrint printers, whatever that is. It used to find both my network printers, but now they don’t show up at all. Network is not the issue.

Provided that the printer is properly connected to the Wi-Fi router, the same network as the iPhone, a full power-cycle sequence (do not forget the router) may be worth testing:

• Power off the Wi-Fi router, the printer, the iPhone, and all other devices/computers.
• Wait two to three minutes.
• Power on the router.
• Wait two to three minutes.
• Power on the printer.
• Wait a minute or two.
• Power on the iPhone and all other devices/computers.

Did you try the full power-cycle sequence described in my reply to Npulos74?

If you are using a VPN app, try turning it off, or (at least temporarily) deleting it.

I have the same issue. The iPhone cannot find any AirPrint. Apple should fix iOS 18.3.1