you asked how to open ports, so, i dont know what you want. and if you want to do that via handy or smartphone, its the same way .
perhaps the question is misdirected. suppose i have no fixed internet connection, so no modem. How can I create a dedicated server on rr using the phone's 4/5g connection?
yes of course but the problem is where to open the ports if I don't have the modem?that's the question
I found this discussion, but looks like your chances to make it work aren't high: https://android.stackexchange.com/q...-forward-internet-using-android-hotspot-to-pc
i can run a dedi from my phone check your firewall and av , make sure relevant ports are open if your trying to join your server it woll either work or wont , loop back !!?.... might be easier to prove the Hodge conjecture Andi