---
title: "How to Fax from Your Phone (No App Needed) - Onetime Fax"
description: "Step-by-step: fax from iPhone or Android without downloading an app. Scan to PDF, send, and get delivery confirmation."
canonical: "https://www.onetimefax.com/faq/phone-faxing/"
---

# How to Fax from Your Phone (No App Needed)

Scan to PDF, enter the fax number, send, and save confirmation—works on iPhone and Android.

Can I fax from my phone without downloading an app?

Yes. Many online fax services work in a mobile browser. You upload a PDF, enter the recipient’s fax number, and send.

How do I scan a document to PDF on iPhone?

Use the built-in scanner in the Notes app (Scan Documents), then share/export the result as a PDF from the Files app.

How do I scan a document to PDF on Android?

Google Drive can scan to PDF (New → Scan). You can also use a scanning app, then export as a single PDF.

What file format is best when faxing from a phone?

PDF is usually the most reliable. If you start with photos, combine them into one PDF so pages stay in order.

How do I fax multiple pages from my phone?

Create a single multi-page PDF, then upload that one file. Numbering pages inside the PDF (1/7, 2/7…) helps if the recipient prints it.

Why did my mobile fax fail?

The most common causes are a wrong number, a busy line, a weak connection while uploading, or an unreadable/oversized file. Retry later and double-check number formatting.

Is it safe to fax from a phone on public Wi‑Fi?

Avoid public Wi‑Fi for sensitive documents. Prefer cellular data or a trusted network, and delete local copies after you send.

Can I fax internationally from my phone?

Yes—enter the full number with the country code (for example: +44 for the UK). See [international faxing](/blog/send-international-faxes).