How to Send a Fax from iPhone in 2026

Sending a fax from your iPhone takes three steps: install a fax app, upload or scan your document, and enter the recipient fax number. You do not need a fax machine, a phone line, or a computer. A modern fax app bridges your iPhone to the global fax network through an encrypted gateway.

What you need before you start

You only need three things. The whole setup takes two minutes on a new iPhone.

A fax app on your iPhone. We recommend Faxend for pay-per-fax pricing. Any modern app works.
The document. A PDF, a photo, or a paper page you can scan with the camera.
The recipient fax number. With country code for international sends.

You do not need a fax machine, a landline, or a subscription to get started. Faxend's Basic tier lets you send a single fax for $2.99 without signing up for anything recurring.

The 4 steps to send a fax from iPhone

Every modern fax app follows the same workflow. The screenshots below use Faxend but the logic is identical across apps.

Install a fax app

Download Faxend from the App Store or open faxend.com/send directly in Safari. The web version works identically to the app.

Upload or scan your document

Tap the upload area. Pick a PDF from your Files app, Mail attachment, or Photos. To scan paper, tap the camera icon and capture each page. Faxend stitches them into one PDF automatically.

Enter the recipient fax number

Type the destination number. The app detects your country from your IP and suggests the right country code. Use the international format (+1 555 123 4567) to avoid ambiguity.

Review and send

Confirm the page count and recipient. Optionally add a cover page message. Tap Send Fax Now. A delivery receipt lands in your inbox within one minute.

That's the whole flow. Most sends complete in under 60 seconds end-to-end.

Try it now — $2.99 for up to 5 pages

No subscription. No free trial to cancel. Upload, dial, send. Your fax arrives in under a minute with a delivery receipt.

Send Fax Now → Download on iPhone

How to scan a paper document on iPhone

Your iPhone has a built-in document scanner. You can also scan directly inside most fax apps.

Option 1: Scan inside the fax app

Faxend's camera button opens a guided scanner. Hold your phone above the page, wait for the frame to lock on, and tap capture. Repeat for each page. The app auto-crops, straightens, and converts to PDF.

Option 2: Use the iOS Files app

Open Files, tap the three-dot menu, choose Scan Documents. The same scanner opens. Save the PDF to Files, then upload it in Faxend.

Option 3: Use the iOS Notes app

Open Notes, tap the camera icon inside a note, choose Scan Documents. Share the resulting PDF to Faxend via the Share Sheet.

All three methods produce a similar quality PDF. Scan in good light, and keep the page flat for the cleanest result.

Supported file formats

Fax delivers documents as black-and-white images. The app converts your file before transmission. Some formats convert more cleanly than others.

PDF — the safest format. Preserves text and layout exactly.
JPEG / PNG — works well for scanned pages and photos.
DOCX / Pages — not directly supported. Export to PDF first.
HEIC — iPhone default. Most apps convert it automatically.

Maximum file size varies by provider. Faxend accepts up to 7 MB per upload, enough for ~100 pages of standard PDF content.

Troubleshooting failed sends

Fax transmissions fail for predictable reasons. Check these four things in order before contacting support.

Wrong number format. International format (+country, area code, number) prevents 90% of failures. Double-check the digits with the recipient.
Recipient machine is busy or offline. Modern apps retry automatically. If the third retry fails, the recipient's fax line is probably down.
Document too large. If your PDF has heavy images, compress it before sending. Free web tools like Smallpdf handle this in one click.
Insufficient credits. A status of "Insufficient pages" means your plan ran out. Top up at pricing and retry.

If none of the above fits, check our comparison of iPhone fax apps — switching providers sometimes resolves issues tied to a specific carrier route.

Receiving faxes on iPhone too

Sending is half the picture. If you also need to receive documents, see our companion guide on how to receive a fax online. A single account handles both directions.

Frequently asked questions

Can I send a fax from my iPhone for free?

Most fax apps require payment. Faxend Basic starts at $2.99 for up to 5 pages with no subscription. FaxZero and FaxBurner offer 3–5 free pages with ads attached. See our roundup of free iPhone fax apps for the full picture.

What file formats can I fax from iPhone?

PDF is the most reliable format. JPEG and PNG images are also supported. Word and Pages files should be exported to PDF first.

Do I need Wi-Fi to send a fax from iPhone?

No. Either Wi-Fi or cellular data works. Fax apps use the internet to reach a gateway that dials the recipient fax number.

How do I scan a paper document to fax?

Use the iOS Notes app or Files app scan feature, or scan directly inside Faxend. The app converts the photo into a clean PDF.

How long does sending a fax take on iPhone?

A single-page fax arrives in 30 to 60 seconds. A 10-page document typically completes in 2–3 minutes.

Is sending a fax from iPhone secure?

Yes, on HIPAA-compliant services. Faxend encrypts every document in transit and at rest with AES-256 and signs a Business Associate Agreement for regulated industries.