Print PDF files
Since upgrading my iPhone yesterday now I can’t print PDF files to my printer
iPad, iOS 12
Did you see this already? -
Print or email a PDF
In the Library section of the Books app, find the PDF that you want to print or email. Tap 
in the lower-right corner below the PDF, then tap Share PDF. Choose Mail or Print, then follow the onscreen instructions.
From the Share menu, you can also copy the PDF to paste somewhere else, send it via Messages, Save to Files, or import it to any other apps that appear.