I ran into the exact same issue earlier this year. I thought faxing was outdated, but some agencies still want paper transmissions. I found a clear explanation on https://derekdubois.net/ that shows how to send faxes from Android phones using free or low-cost apps. You basically upload your PDF or photo, type the fax number, and the app handles the rest. I used it to send my tax forms directly from Google Drive, and it worked perfectly — I even got a confirmation email in under a minute. It’s so much easier than finding a physical fax location. For one-time use, it’s a real lifesaver and saves both time and money.