Mobile fax is the ability to send and receive faxes from a smartphone or tablet using an internet connection. A mobile fax app converts your document into a fax-compatible format and transmits it over the internet to the recipient's fax machine or inbox — no hardware or phone line required.

Do I need a landline to use a mobile fax app?

No. Mobile fax apps use your existing internet connection (Wi-Fi or mobile data) to transmit faxes. No landline, no phone line, and no fax machine is needed.

How much does mobile faxing cost?

Most mobile fax apps charge $8–$20 per month for individual plans covering 200–500 pages. Pay-per-fax options start around $0.99–$1.99 per fax for occasional senders. [mFax](https://mfax.to) offers flexible pay-per-fax pricing with no monthly commitment.

Is mobile faxing secure?

Yes — reputable mobile fax services encrypt documents with AES-256 encryption at rest and TLS in transit, which is actually more secure than traditional analog fax (which sends unencrypted signals over a phone line). For healthcare, look for a service that offers a signed Business Associate Agreement (BAA). See our [guide to online fax security](/blog/is-online-fax-secure/) for details.

Can I receive faxes on my phone?

Yes. When you sign up for a mobile fax app, you get a virtual fax number. Any fax sent to that number is automatically converted to a PDF and delivered to your app inbox and/or email address. Learn more in our [guide to receiving faxes online](/blog/how-to-receive-fax-online/).

What Is Mobile Fax: How It Works, Pricing & Alternatives

Mobile fax lets you send and receive faxes directly from your smartphone — no fax machine, no phone line, no paper. Learn how mobile faxing works, what it costs, and how to get started in under 2 minutes.

Frequently Asked Questions

What is mobile fax?: Mobile fax is the ability to send and receive faxes from a smartphone or tablet using an internet connection. A mobile fax app converts your document into a fax-compatible format and transmits it over the internet to the recipient's fax machine or inbox — no hardware or phone line required.
Do I need a landline to use a mobile fax app?: No. Mobile fax apps use your existing internet connection (Wi-Fi or mobile data) to transmit faxes. No landline, no phone line, and no fax machine is needed.
How much does mobile faxing cost?: Most mobile fax apps charge $8–$20 per month for individual plans covering 200–500 pages. Pay-per-fax options start around $0.99–$1.99 per fax for occasional senders. [mFax](https://mfax.to) offers flexible pay-per-fax pricing with no monthly commitment.
Is mobile faxing secure?: Yes — reputable mobile fax services encrypt documents with AES-256 encryption at rest and TLS in transit, which is actually more secure than traditional analog fax (which sends unencrypted signals over a phone line). For healthcare, look for a service that offers a signed Business Associate Agreement (BAA). See our [guide to online fax security](/blog/is-online-fax-secure/) for details.
Can I receive faxes on my phone?: Yes. When you sign up for a mobile fax app, you get a virtual fax number. Any fax sent to that number is automatically converted to a PDF and delivered to your app inbox and/or email address. Learn more in our [guide to receiving faxes online](/blog/how-to-receive-fax-online/).