How to create PDFs on iPhones using Notes

It may sound funny to say this, but PDF files — electronic copies of printed documents — are still around and are still very useful. Short for Portable Document Format, PDFs allow you to create a digital version of a paper document, letting you store and access them a lot easier than having to rifle through a filing cabinet.

While there are a variety of PDF apps available — Adobe Acrobat being the most well-known — you actually don’t need...