Sonos drops support of OS when the manufacturer of the OS no longer supports the OS.  This is done for security reasons, as Sonos can’t guarantee security if the OS is not secure.  If your concerned about environmental issues due to obsolete android devices, then you should direct your complaint at Google.

‘Planned obsolescence’????  The purpose of planned obsolescence is to push customers into buying newer versions of your products.  Now, tell me, what new product would you have to buy to rectify the situation, a Sonos speaker or a phone?

Yeah, it always amazes me that people accuse Sonos of the “planned obsolescence” of  an app which costs the user nothing (and costs Sonos a fortune to maintain).  

The last release of Android 6 was in October 2017.

I was waiting for a response telling me how to still use the application on android 6. Unfortunately the answer is simply : I’m not responsible, it’s another. But it is still sonos which stopped the use of an old version. I have another app in the same case but I can continue to use it, just with feature restrictions !

The “another” in this case is the manufacturer of your phone and/or Google.  So your complaints are misplaced, and that is all we are trying to explain.  Also, you quite wantonly threw an accusation of “planned obsolescence” towards Sonos, an accusation which, when viewed with a mere modicum of logic, can be proven quite false.  So no, you were not simply “waiting for a response”; your posts contained far more than a request for help.

Sorry. I thought by accessing the sonos community to receive some help even though my post maybe not quite correct. I note that this follows on a trial of intentions for which I do not wish to waste time. Thank you. (Google translation)

Wow, you are so indignant when all fellow Sonos users are trying to do is help!  Your blame aimed at Sonos is misplaced, that is all people were trying to say.