Help/Support EDIT How to change port listening on iPhone

[Stephcreas 5 iPhone SE 9.3.3]

Hey iosgods users 
I need your knowledge, the reason is a problem about port listening on my iPhone SE Jailbroken 9.3.3
So I use iTransmission for torrent DL. In settings of this app, the port listening is bad when I check it.
My question: I don't use wifi , always on 4g (in France we are lucky, lots of contracts get no limit for transfer data).
So how to know the list of port listening opened ?  If a command line is necessary, I get MTerminal …
I need to change port listening  in settings but I don't wanna do a bad number.

When I use vpn oneclick (hacked) iTransmission works , slowly but works. With vpn master (hacked too) iTransmission doesn't work.

I hope tell you all infos needed. All your ideas are wellcom. If you need other info, don't hesitate to ask me … I ll try to be more explicit.

Thanks a lot for your listening
Long live iosgods !

EDIT: I d seen somewhere to know  various infos of ports by terminal, the command is "netstat". Terminal emulater of iPhone needs for do it one tweak : Network commands on Cydia/telesphoreo repo…

But instead I see varius numbers of port listening, when I try them in iTransmission, same error. I m waiting for some help…

Thanks 

Updated September 30, 2017 by Stephcreas
Complement infos

[datagen 598 iPad Air 2 11.3.1]

What port do you want?

 

[Stephcreas 5 iPhone SE 9.3.3]

59 minutes ago, Baker Ya Maker said:

What port do you want?

 

In settings of app iTransmission, when I check the port listening, a pop up  appears "bad port change it" but I don't know what number is ok. I know if I use wifi I can find it in router but I use 4g (LTE) data . And perhaps this port depends vpn used? Cause with vpnoneclick iTransmission works but slowly and with vpnmaster iTransmission can't download and it doesn't find seeders…

I hope to be explicit enough. 

Thanks 

[datagen 598 iPad Air 2 11.3.1]

You should use whatever works best. I'm sorry but I don't kniw what to do being behind a screen lmao. My best solution for you is to make a yahoo and ask a question, google your problem, or go to apple forums. Anything text related on google you type will help you because it will find anything related to whatever you are asking. Hope you get some help and thanks.