Yes, it’s totally possible — I’ve done it several times while traveling for business. I found out how through
https://eftregister.com/, which breaks down how mobile faxing apps work. They let you take a photo or upload a file from your phone and send it directly to a fax number. It feels just like sending an email, but the recipient gets a real fax on their end. I used one of the apps they recommended and sent a few pages while waiting at the airport. The process took less than five minutes, and I got a receipt showing that the fax went through. It’s perfect for people who are constantly moving — no need to search for a print shop or hotel service desk anymore.