My phone randomly connects to open wifi networks i have never been connected to. So i have done some looking around and have found a few threads about this same issue on other devices. It always seems to be the same answers. Turn off notify of open wifi networks, turn off connections optimizer, forget the network from your network list, or turn off wifi when youre travelling. None of these answers address the actual issue. I have the s7 edge with verizon, i can not find an equivilant of the sprint connections optimizer on my verizon phone. The networks its connecting to are mostly open networks with sign in portals. It randomly connects to them while i am abroad driving around causing connection issues while im streaming music. I have never connected the phone to an open network. I use two networks. One at home and one at work. I have turned off show wifi popup, smart network switch, wifi notifications and passpoint. It will still connect to these random networks. Turning wifi off is an option but with my limited data plan i tend to forget to turn it back on. Most importantly i shouldnt have to deal with this. My original droid still will only connect to networks i tell it about.