I tried uninstalling and reinstalling the Google app, clearing cache in app and on phone. Retrained the voice in Google app a dozen times. Nothing is working. Side note: my SIM card is still installed in my old 5T. the 7 Pro doesn't have a SIM card. Not sure if that is a factor. Assistant works fine. *UPDATE: "OK Google" will launch when prompted when display is locked but it won't answer or respond to whatever I ask it. "OK Google" will not launch or respond when phone is unlocked at all.