A WebDAV server on your iPhone: what to look for.

• Encryption. Plain WebDAV sends files in the clear on the network. DiskBeam encrypts the connection with a certificate your iPhone makes, and shows its code so you can check it.
• A password on every request. DiskBeam makes a strong password per iPhone; Make a new password signs out every Mac that knew the old one.
• Read-only by default. A Mac shouldn't be able to delete your files by accident. DiskBeam starts read-only and goes back to read-only every time the disk turns off.
• Works with Finder. DiskBeam supports what Finder needs to copy both ways, including free space and file locking.
• Drives and folders. Share an SSD or SD card plugged into the iPhone, or any folder from the Files app (Pro).
• No cloud. Files go straight from the iPhone to the Mac; no account and no server in between.

1. Open DiskBeam on your iPhone and tap Turn on disk. Allow Local Network when iPhone asks.
2. On your Mac, in Finder, choose Go › Connect to Server (⌘K) and paste the address DiskBeam shows.
3. The first time, your Mac asks about the iPhone's certificate. Click Show Certificate, check that the code matches the one in DiskBeam, then click Continue.
4. Choose Registered User, enter the name and password from DiskBeam, and tick Remember this password.

Your iPhone now opens as a disk in Finder, in the sidebar under Locations.