Sorry, what is your question in English?

If you’re trying to connect with Bluetooth before setting it up on WiFi, it can’t be done. The device (speaker) needs to be initialized first. 

You will need two separate mobile devices - one mobile phone is used as a WiFi Hotspot for the Era 300 speaker tethering - and the other (separate) mobile is then used together with the Sonos ‘controller’ App installed… that mobile also needs to be tethered to the first mobile phone hotspot.

If your Sonos App is on the same device that you are using for the WiFi hotspot, then it will not work. 

Hope that assists.

Hi Ken, I thought about it and you encouraged me with that, thx lot, run try it

Got it, thanks your all (Ken a specially! )for help