Why Can’t iPhone find Printer?

iPhone uses the Airprint technology to print through printers. The printer must be Airprint enabled, you simply select the documents and images and send the print command. There can be an issue with your printer, iPhone or Wi-Fi due to which iPhone can’t find printer. Here are some troubleshooting solutions which can help you to fix the issue. First, restart all the devices connected. Turn off your Wi-Fi and Bluetooth and then turn it on back again. Check if there is any update available. Update your iPhone. Reset the network setting and then establish a connection. 

https://connectmyprinter.com/how-to-connect-canon-printer-to-iphone/