Just by my understanding after reading the front page, it means I can ssh into my Android phone (on LTE) from a desktop computer from another location. Since m

Just by my understanding after reading the front page, it means I can ssh into my Android phone (on LTE) from a desktop computer from another location. Since most mobile network providers block listening to sockets on the phone, server applications (to the internet) cannot be hosted on mobile phones. Does it mean Tailscale app always run in the background and keeps an active connection to Tailscale servers? Wouldnt it negatively impact the battery of the phone?