I want to appear invisible on Hangouts. On my PC, it keeps telling me that I am signed in somewhere else and thus cannot appear invisible. The only other device I use for that is my phone, and in the past all I had to do was sign out of Hangouts on my phone and problem solved. Now, signing out of Hangouts on my phone doesn't fix the problem. Could there be something that's causing Hangouts to auto-sign-in on my phone even after I log out?