Amazingly bad connectivity. Shocking in this day and age when everything is connected that i cant control a simple speaker with my phone. I could buy a $20 bluetooth speaker from walmart that connects better. App requires update but it fails everytime. Tried deleting and reinstalling as new system. Still won't connect. As others have said, ive had my sonos for years and it has sat quiet for most of that time. Disappointing because when it does manage to work the sound quality is good.