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How to Upload and Download FTP Files on iPhone

Use Fileso as an FTP client, configure transfer mode and filename encoding, and diagnose transfers that stall after login.

2 min readFileso

If a server provides FTP access, Fileso can browse its folders and move files between that server and your iPhone. The connection requires the FTP host, account, port, and an optional starting path. It is a file-transfer connection, separate from the server’s web dashboard.

Connect to the FTP server

  1. Open Add Connection in Fileso and choose FTP.
  2. Enter a name, Address, User Name, and password.
  3. In advanced settings, enter the server’s Port and optional Path.
  4. Leave Mode at its initial setting for a first attempt unless the administrator specifies another mode.
  5. Save the connection and open a small directory.
  6. Download a test file, then try uploading a small file to an allowed folder.

Do not substitute FTP for SFTP in the form. They are different protocols. If your server supplies an SSH file-transfer account, choose the matching SFTP connection type instead.

Login works, but listing or transfer stalls

FTP can use a separate data connection for directory listings and file contents. That is why an accepted username and password do not guarantee a successful transfer.

Fileso exposes Default, Passive, Active, and Extended Passive modes. If your server requires passive operation, select that mode and retry a small directory. Server firewall and router settings still need to permit the chosen data connection; a client setting cannot repair a blocked server configuration.

Fix garbled filenames

The Character Encoding setting controls how FTP filenames are interpreted. If names appear corrupted while file contents are otherwise intact, check the encoding used by the server. Choose the corresponding setting and reopen the directory.

Filename encoding is separate from the encoding inside a text document. Changing the FTP setting does not convert a downloaded log or script to UTF-8.

Check the transfer result

Compare the destination file’s size and open it after a transfer completes. For large uploads, make sure the server has enough space and the account can write to that exact folder. Keep the local source until the remote copy has been checked. A listed filename alone is not proof that the complete file arrived.

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