Can't connect to FTP server when I'm connected via hotspot

I was having this issue on my phone. After a week and dealing with support from multiple apps it came down to being my phone on cellular service. I contacted t-mobile and after a little bit the agent asked me if I had shut off my phone and did a reset. I thought it was ridiculous because my phone had died the day before and shut off. I told him I’d entertain the idea. It’s electronics 101 and guess what. It worked.

Not sure if you ever got your answer. But, maybe try that if you haven’t already.

I just gave up. Apparently Apple is in no rush to fix the issue, and are busy passing the buck to the carrier, the ftp client, anything but iOS 17. So I reinstalled iOS 16. And AMAZINGLY everything works now! So, until I see that iOS 17 is fixed, I’ll stick with what I know works.

Same here. 100% ios17, I tried with multiple devices, multiple phones, multiple contracts with the same carrier, multiple connection methods (BT, Wifi, usb)

Whenever there is ios17 is involved, it doesn’t work.

Wish I could go back to ios16 because of this issue.

Hello, this is an IOS 17 problem. In other forums, users report the same error. In Germany there is now IOS 17.0.3 and the bug is not fixed yet. The only solution at the moment, if you have an old iPhone, is to use it with a previous version. I use my IPhone 7. However, the constant map change is annoying.

Tomas009 wrote:

No, it's FTP server at commercial web hosting company, not in my home network. I have more web hostings in various companies and the problem is the same.

I'm trying to connect via domain name, but I've also tried to connect via IP address. Still timeout...

Thank you

Maybe your cell provider's hotspot plan does not include ftp.

Same here. FTP is broken in iOS17 hotspot.

I tether my iPhone to a Canon EOS R3 using the personal hotspot to send live news images directly to the newspaper picture desk and this is broken as of the latest iOS update.

Bug Tracker form but requires a free Apple Developer account, otherwise use feedback on iPhone. Have already done this but helps if others also report the issue. https://www.cultofmac.com/820395/file-bug-report-on-iphone/

lvieira01 wrote:

I can't convince my clients to change something they're been using for years without any issues. For what i've been reading last days if Apple doesn't come out with a solution fast, the only way to solve this is downgrading to iOS 16. It's what i'm planning to do.

Ask them to post the login credentials on their web site. Seriously. That’s what they are effectively already doing.

Any file server with known credentials too often ends with myriad files on their server that are illegal to even possess, and with the ensuing legal hassles.

If they’re insistent, insert some text in your contract that makes it clear that you’ve warned them and this is their mess, so you are less likely to get blamed for any resulting illegalities.

PS: sftp also avoids ”fun” with firewalls.

Everything doesn't work when tethering with ios17 and ipados17.

FTP connection can be made correctly using tethering with Android smartphone, iOS16, iPadOS16.

The problem is with the 17 series.

We will need to file a bug report as Apple don't monitor these forums.

It's 100% an Apple iOS 17 bug affecting FTP on port 21 over Personal Hotspot connections.

you can try to see if apples support have some idea

Get Support (apple.com)

And or

Contact - Official Apple Support

And or

Contact - How to Contact Us - Apple

Or

Genius Bar Reservation and Apple Support Options - Apple

I am having the exact same problem, on 2 different computers using 2 different operating systems. Nothing has changed on either system, the only thing that has changes is I updated my phone to iOS 17 (now 17.0.1). I am a photojournalist, and often need to upload photos to different news organizations servers. Before the update, everything was fine. Now, I can't access any of my business client's servers even though my computers are on the internet. This is NOT small problem. I need to get these images into their servers as quickly as possible, and not getting them in is a major problem. Last night I covered a HS football game, and could not log into their server and had to email the photos which slows down their process and looks bad on me. Like I said, nothing has changed except for the iOS. The computer sees the server, and attempts to login, but times out. This NEEDS to be fixed!

lvieira01 wrote:

9 in 10 photojournalists uses ftp to transmit their work

That may well be true, but it says the the news agencies or whatever entitities require that are grossly incompetent or even criminally negligent. From the point of view of a server it is perfectly trivial to implement a proper secure protocol; and from the client it is just a matter using sftp:// instead of ftp://

In case people are not aware: ftp sends user names and passwords in plain text. Think about it for a second.