iPhone 14 Pro Max printing issue with Canon MG 3650 after laptop driver installation

The Canon MG3650 is listed as a supported printer in About AirPrint - Apple Support. You should be able to print from an iPhone without the need for a special app, provided that the printer is connected to the same network (Wi-Fi router) as the iPhone (Use AirPrint to print from your iPhone or iPad - Apple Support).

A full power-cycle sequence may be worth testing (do not forget the router):

• 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.

Also, if you are using a VPN app, try to turn it off or remove it (at least temporarily).

MEAASK wrote:

I have removed Printer app from my phone & reinstalled

I cannot imagine what this means.

• The Canon MG 3650 is AirPrint capable!
• There is no iOS “Printer” app.
• Maybe you mean some Canon app?
• Have you checked the Canon’s Wi-Fi connection?
• Hadn’t you previously used AirPrint?