Upon installation 4 years ago the 4 speakers and all 3rd party devices worked excellent, in harmony, alongside our phones. TODAY it's a constant battle with the schizophrenic assistant who's voice changes at random. She also has gremlins and the whole system is now just terrible. Not recognizing synced devices. Ask a question standing next to a unit, and the one upstairs answers. Etc.. Shame too... She was becoming part of our family. Now we want her committed. Google home needs streamlining.