So how can you edit your PDF files on your iPhone and iPad in the iOS 15 Files app? First, you will need to run the iOS 15, open the Files app, and open the PDF that you want to edit.

Although it can't open PDF files, OpenOffice can save valid PDF files that you can later edit in Adobe Acrobat. Furthermore, OpenOffice Draw can open JPG files and export them as PDF files natively.

Need to create a PDF or save your current document in that file type? We’ll walk you through how to convert Apple Pages to PDF on Mac, iPhone, and iPad.