How To Use Fax On iPhone (2026 Guide)

By Sarah Martinez · Published April 20, 2025 · Updated June 8, 2026 · 7 min read

Quick Answer: Your iPhone can fax right now — no fax machine, no phone line. Open Safari, go to mFax.to, upload your document, enter the fax number, and tap Send. Done in under 2 minutes.

Fax is alive and well in 2026. Healthcare, legal, government, and real estate all rely on it — and at some point, that means you need to send one from your iPhone. The good news: there's no trip to the copy shop required.

How to use fax on iPhone comes down to three practical methods. This guide walks through all of them, explains how to receive faxes on your iPhone too, and shows you how to scan a paper document with your camera before you send.

Does iPhone Have a Built-In Fax Feature?

No — and it never has. Apple removed legacy fax support years ago, and iOS 2026 includes no native fax app or fax setting to enable.

What your iPhone does have is a built-in document scanner (in the Notes app and Files app), a camera that produces high-quality document images, and access to cloud storage like iCloud Drive and Google Drive. Those tools feed directly into every fax workflow below.

To actually send or receive a fax, you need an online fax service. These services replace the traditional phone-line fax infrastructure with an internet connection — your iPhone sends the document to their servers, which transmit it as a real fax to any fax machine or number in the world.

3 Ways to Use Fax on iPhone

There are three main approaches to iPhone faxing, each with its own strengths:

1. Web browser — open Safari, no app install required
2. Dedicated fax app — best experience, push notifications, built-in scanner
3. Email-to-fax — use the iPhone Mail app if you already have an email-to-fax account

All three send a real fax — the recipient receives it on their end just like any other fax.

Method 1: Send a Fax via Safari (No App Required)

The fastest way to send a one-time fax from your iPhone. Open Safari and go to mFax.to — the site works as a Progressive Web App, so there is nothing to install.

Method 2: Use a Dedicated Fax App

If you send faxes regularly, a dedicated iPhone fax app gives you a better experience: push notifications when faxes arrive, a built-in scanner, fax history, and a permanent fax number.

mFax is available on the App Store and has a 4.8-star rating from over 5 million users. Download it free and follow these steps:

Method 3: Send via Email-to-Fax

If your fax service supports email-to-fax, you can send a fax directly from the iPhone Mail app — no separate app or browser needed.

The format is simple: compose an email where the "To" address is [faxnumber]@[servicedomain] (e.g., 15551234567@faxdomain.com), attach your document, and send.

How to Receive Faxes on Your iPhone

Receiving faxes on your iPhone works just as well as sending them. Here's how it works:

1. Get a fax number — when you sign up for mFax or any online fax service, you're assigned a dedicated fax number (local or toll-free). You can also port an existing fax number.
2. Share your fax number — give this number to anyone who needs to fax you: doctors, law firms, insurance companies.
3. Receive faxes as PDFs — when someone sends a fax to your number, it arrives in your app inbox as a PDF. You'll get a push notification immediately.
4. View, download, or forward — open the fax in the app to read it, save it to Files, forward it by email, or print it directly from your iPhone.

You can also set up email delivery so incoming faxes land in your inbox — useful if you prefer not to keep the app open. For a full walkthrough, see our guide on how to receive a fax online.

How to Scan a Paper Document Before Faxing

If you're starting with a physical document and need to fax it, your iPhone's built-in scanner is all you need.

Using Notes (built into every iPhone):

1. Open the Notes app and create a new note (tap the compose icon)
2. Tap the camera icon above the keyboard and select Scan Documents
3. Hold your iPhone over the document — the yellow outline auto-detects the edges
4. The app captures automatically when the image is steady, or tap the shutter manually
5. Scan additional pages by continuing to hold the phone over the next page
6. Tap Save when done
7. Tap the scan thumbnail, then Share → Save to Files to export as a PDF
8. Upload that PDF to mFax.to or your fax app of choice

For more details on scanning workflows, see our scan and fax guide.

iPhone Fax Methods Compared

Our recommendation: For most iPhone users, the web browser method is the fastest way to send a one-time fax. If you fax more than a few times a month or need to receive faxes, the mFax app is worth the download — the built-in scanner alone saves significant time compared to manually exporting from Notes.

What Documents Can You Fax from iPhone?

You can fax virtually any document you can store on your iPhone:

• PDFs — the best format for faxing; clean, consistent quality
• Word documents (.doc, .docx) — most services convert these automatically
• Photos (.jpg, .png) — works, but PDF gives cleaner results
• Scanned documents — any scan saved to Files or Photos
• Google Docs / Sheets — export to PDF first, then fax

If you need to combine multiple files into one fax, use our free Merge PDF tool — no signup required. If your file is too large, the Optimize PDF tool compresses it before sending.

Send Your First Fax from iPhone Now

Using fax on your iPhone is genuinely straightforward once you know which method to pick. No fax machine. No phone line. No trip to the copy shop.

For a one-time fax: open Safari and go to mFax.to — upload your document, enter the number, and send.

For regular faxing or receiving: download the mFax app from the App Store. You'll have a dedicated fax number, a built-in scanner, and a full fax history — all from your iPhone.

See also:

• How to Fax from iPhone: 3 Methods That Actually Work
• How to Fax from iPhone Without an App
• Top iPhone Fax Apps Reviewed