Just noticed it today. Wifi was off. I had turned it off the other day and just thought I forgot to turn it on. But when I turned on wifi, it asked for my password for my home network.
I don't have that app.
Sorry, didn't figure out the smart wifi thing was in fact "At&t smart wifi"! I was thinking it was a downloadable app. Finally figured it out. I'm rooted so I deleted it. I've had wifi now for at least 5 minutes. Perhaps its fixed. Yay! Thanks
My Nexus 10 with 4.4.2 turns WiFi off with screen Off. So I have to turn WiFi ON each time I turn screen ON . I do not have "Smart WiFi" App installed. I do have WiFi Analyzer App installed.