Does every HP printer have a fax feature?

No. Fax is a standard feature on the HP OfficeJet and OfficeJet Pro series. Most HP ENVY and DeskJet models do NOT include built-in fax hardware. Check your model's spec sheet to confirm. If your printer lacks a fax port, use the [HP Smart app or mFax.to](/blog/how-to-fax-on-hp-printer/) to fax over the internet instead.

Can I fax from an HP printer without a phone line?

Yes — two ways. First, the HP Smart app includes a Mobile Fax feature that sends faxes over Wi-Fi with no landline required. Second, you can use an online fax service like mFax.to from any device, which works completely independently of your printer's hardware.

How do I set up fax on my HP OfficeJet printer?

Connect a standard RJ-11 phone cord from your wall jack to the 1-LINE port on the back of the printer. Then on the control panel, go to Setup → Fax Setup → Basic Fax Setup to enter your fax header and set rings-to-answer. Run a fax test (Setup → Tools → Run Fax Test) to confirm everything works.

Why is my HP printer not sending faxes?

The most common causes are: phone cord plugged into the wrong port (use 1-LINE, not 2-EXT), a DSL line without a DSL filter, VoIP service incompatibility, or a loose cable. Try connecting a regular phone to the same wall jack and listen for a dial tone. If there's no dial tone, the issue is with the phone line itself, not the printer.

How many pages can I fax from HP Smart app Mobile Fax?

The HP Smart Mobile Fax supports up to 50 pages or 20 MB per fax. It sends faxes over the internet and does not require a phone line or printer fax hardware. Note that Mobile Fax is send-only — it cannot receive incoming faxes.

How to Fax on HP Printer: Complete Guide (2026)

Learn how to fax on an HP printer using the control panel, HP Smart app, or online — with or without a phone line. Step-by-step guide for all HP OfficeJet and ENVY models.

Frequently Asked Questions

Does every HP printer have a fax feature?: No. Fax is a standard feature on the HP OfficeJet and OfficeJet Pro series. Most HP ENVY and DeskJet models do NOT include built-in fax hardware. Check your model's spec sheet to confirm. If your printer lacks a fax port, use the [HP Smart app or mFax.to](/blog/how-to-fax-on-hp-printer/) to fax over the internet instead.
Can I fax from an HP printer without a phone line?: Yes — two ways. First, the HP Smart app includes a Mobile Fax feature that sends faxes over Wi-Fi with no landline required. Second, you can use an online fax service like mFax.to from any device, which works completely independently of your printer's hardware.
How do I set up fax on my HP OfficeJet printer?: Connect a standard RJ-11 phone cord from your wall jack to the 1-LINE port on the back of the printer. Then on the control panel, go to Setup → Fax Setup → Basic Fax Setup to enter your fax header and set rings-to-answer. Run a fax test (Setup → Tools → Run Fax Test) to confirm everything works.
Why is my HP printer not sending faxes?: The most common causes are: phone cord plugged into the wrong port (use 1-LINE, not 2-EXT), a DSL line without a DSL filter, VoIP service incompatibility, or a loose cable. Try connecting a regular phone to the same wall jack and listen for a dial tone. If there's no dial tone, the issue is with the phone line itself, not the printer.
How many pages can I fax from HP Smart app Mobile Fax?: The HP Smart Mobile Fax supports up to 50 pages or 20 MB per fax. It sends faxes over the internet and does not require a phone line or printer fax hardware. Note that Mobile Fax is send-only — it cannot receive incoming faxes.