If you’re like most people, you probably read PDFs on your iPhone. But if you’re new to PDFs, there are a few things you need to know before you start. First, PDFs are a type of document that uses a special format. If you don’t have the right software, you can’t open them. Second, PDFs are often large files. So if you want to read one on your iPhone, make sure that your phone has enough space. To open a PDF on your iPhone, first make sure that the app is installed. Then open the app and search for “PDF.” Once it’s found, tap on it to open the file. ..