For single files, I use qrcp

I use KDEConnect. I don’t know about iPhone but it works with Android, Linux and Windows.

Honestly, termux is the easiest:

• Unison
• Rsync
• Git

If unison you need some fiddling, here from my wiki:

It can be compiled on termux though ((https://github.com/termux/termux-packages/issues/129#issuecomment-1383006456)) and it's totally painless

>  You can also compile a static binary yourself in Termux. I was first using the sshfs workaround, but it was too slow for very large folders. I ended up doing the following steps to get the latest unison version (which also has backward/forward compatibility) so that I can directly use unison with ssh. It also works without proot:

  - Install a proot distro, e.g. alpine:
      * ''proot-distro install alpine''
      * ''proot-distro login alpine''
      * ''apk update && apk add ocaml musl-dev''
  - Download the latest release source code, e.g.:
    * ''wget https://github.com/bcpierce00/unison/archive/refs/tags/v2.53.0.tar.gz''
    * ''tar -xvf v2.53.0.tar.gz''
    * ''cd unison-2.53.0''
  - Compile a static binary using:
    * ''make UISTYLE=text NATIVE=true STATIC=true''
  - Move the binary to the bin folder of Termux:
    * ''mv src/unison /data/data/com.termux/files/usr/bin/unison''

 Note that outside the distro environment unison only works with the ''-ignorelocks'' flag for some reason. set an alias with ''alias unison=unison -ignorelocks''

 It may also be necessary to set ''-links=false'' ((https://github.com/bcpierce00/unison/issues/590)) and ''-perms=0'' ((https://www.cis.upenn.edu/~bcpierce/unison/download/releases/stable/unison-manual.html#prefs)) ((https://github.com/bcpierce00/unison/issues/590)):

 <code bash>
 alias unison=unison -ignorelocks -links=false -perms=0
 </code>

 Alternatively the file ''~/.unison/default.prf'' can be modified to contain:

 <code bash>
 auto=true
 batch=true
 ignorelocks=true
 links=false
 perms=0
 </code>

I mean, the fastest method is likely to just plug the phone into PC and pretend it’s a flash drive?

I’ll add in Bitwarden Send (including self-hosted vaultwarden), although probably doesn’t make sense if you’re not already using it for password management.

A cable

Syncthing or https://pairdrop.net/

I usually use kde connect.

I love localsend.

Works on Linux, Android, iOS, Windows, and Mac. It is basically an OS agnostic Airdrop.

It’s FOSS, so you can go to the Github and build from source for OpenBSD, but I have no idea if that would work.

Here are a bunch of local services I’ve used at one point or another from phone to PC or PC to PC. Not sure if any links are out of date.

KDE Connect

• Site: https://kdeconnect.kde.org/
• Source: https://github.com/KDE/kdeconnect-kde

Wormhole (Closed Source)

• Site: https://wormhole.app/

LocalSend

• Site: https://localsend.org/
• Source: https://github.com/localsend/localsend

SnapDrop

• Site: https://snapdrop.net/
• Source: https://github.com/RobinLinus/snapdrop

ShareDrop

• Site: https://www.sharedrop.io/
• Source: https://github.com/szimek/sharedrop

FilePizza

• Site: https://file.pizza/
• Source: https://github.com/kern/filepizza

Original Wormhole

• Site: https://webwormhole.io/
• Source: https://github.com/saljam/webwormhole

PeerTransfer

• Site: https://perguth.de/peertransfer/
• Source: https://github.com/perguth/peertransfer

JustBeamIt

• Site: https://justbeamit.com
• Source: https://github.com/justbeamit/beam

Send Visee

• Website: https://send.vis.ee/
• Source: https://github.com/timvisee/send
• List of instances at: https://github.com/timvisee/send-instances

SFTP or Matrix

I’m not sure if there’s one the best tool, depending on a case, I use mix of

• scp
• localsend
• croc
• https://github.com/dutchcoders/transfer.sh
• https://github.com/stonith404/pingvin-share
• pbcli (pastebin)
• I also have a script that sends me mail with files attached

Kdeconnect. Alternatively NextCloud or sending an email to myself.

Syncthing is fast. I have an IPv6 setup too which seems to help.

I have my downloads directory on my desktop linked to a downloads directory on my Android; you can’t link to the real Android downloads directory anymore so I use another.

When the file is removed from the desktop downloads directory it disappears from mobile.

I tried using Bluetooth between them but it’s more fiddly than Syncthing with my config. Switch Bluetooth on on desktop, connect to desktop, send file, disconnect, move file. Whereas Syncthing is always on.

However, before I started using Obsidian notes I used to transfer URLs using Signal’s Note-to-self thing. Signal on both desktop and mobile.

Obviously, I sync between mobile and desktop Obsidian using Syncthing.

https://pairdrop.net/

open source, can be self hosted or you can use the official instance.

Personally I have been using KDE connect most of the time when I am at home.

Pairdrop I use more when sharing with other people across the internet.