How to fax from an iPhone

iPhones have no built-in fax function — never have. Here are the three real ways to get a document out of your phone and onto someone's fax machine, in order of how little friction they involve.

1. A browser tab (fastest, no install)

Open nerdfax.com in Safari or Chrome, tap the upload box, and choose "Take Photo" or pick an existing PDF/photo from your library. Type the destination number, your name, and your own callback number — the law requires those two on the page — and send. No App Store visit, no account.

A photo works, but a flat, well-lit shot matters more than you'd think — see the tips below.

2. iOS's own Print share sheet, if you already have a fax-capable printer/service set up

Open the document in Files or Photos, tap Share, then Print. If you've previously added an AirPrint printer or a print service that itself supports fax delivery, it can appear as a destination here. Most people don't have one configured, which is exactly why this route rarely gets used — it depends entirely on hardware or a subscription you'd have set up in advance, not something iOS does out of the box.

3. A dedicated fax app from the App Store

Several exist. The tradeoffs to actually check before installing one: whether it charges per page or requires a subscription for occasional use, whether it shows you anything beyond "sent" (a delivery confirmation code, retry behavior, an error reason), and whether the app deletes your document afterward or keeps a copy on a server somewhere you didn't choose.

Getting a clean photo, if you're not starting from a PDF

• Flat surface, even light — a shadow across the page is the single most common cause of a rejected or garbled fax.
• Fill the frame with just the page. Cropping later works, but starting square saves a step.
• If the page has small print, take it in good light rather than relying on flash, which tends to blow out a corner.