If the PDF file is on your phone, use a file manager like Google Files or Samsung's preinstalled My Files app to find it. Your phone should have a PDF viewer, typically Google Drive, which we show ...

You can delete pages from a PDF on a Mac using the Preview app. You can also add pages to a PDF in two ways with Preview.

Using the PDF Tool & Inking Feature in Microsoft Edge, you can draw on PDF files, highlight text, add text, and choose color. Learn how!