Smartphone connection to Volumio without home network

Is it possible to make direct connection to Volumio (PI3B) with a smartphone without a router or home network?
I would like to integrate it into a mobile sound system.

Volumio creates a hotspot WiFi on which you can connect to. It is designed to help configuration. But you can use it to control volumio. You have to connect your smartphone to it.

OK, thanks, I’m going to start with it.

Hello! I have experienced problems with AirPlay when my iPhone is connected to the “stand alone” Volumio hotspot. Volumio doesn’t compare in the list of available AirPlay speakers. Is that normal? Maybe AirPlay need a “infrastructure” Wi-Fi network to work?