I bring one of our speakers to our second home during summer.  This speaker is used as a pair in our primary home. "Although I see my Sonos sl one speaker on my router list of connected devices at summer home,It is not recognized by my iPhone ".  I have performed a factory reset several times and it goes through the set up process. Supports suggests that you unplug after setup and replug speaker for connectivity issues and I do, but phone still has issue connecting.  Anyone out there who has had this problem?