I explain my situation: I downloaded from google play store NetShare app to make my smartphone as WiFi extender, it works with no problems, BUT I need to change the host name (IP address) and port number in my laptop to get it working!! My system is xubuntu 16.04 and there are NO options to do …

Ubuntu VPS Hosting via How to change Host (IP address) and port number to connect to wifi internet in Xubuntu 16.04?.