Editing a PDF on an iPhone can be quite handy! You can use apps like Adobe Acrobat Reader or Apple's built-in Markup tool to make changes. These allow you to annotate, fill out forms, or even sign documents. What type of edits are you looking to make on your PDFs? If you’re trying to annotate or add text, one of these tools could be a great solution. Have you tried any specific apps already, or are you exploring options?