Update on this. I was testing out WiFi Extra in Sutton Town Centre and it was not always auto connecting. As the 4G signal was good it didant switch over to WiFi Extra like its suppose to, it only tried to auto connect for some reason when the signal strength of WiFi Extra was very poor, ie was not in the shop that offered WiFi Extra and no WiFi bars/gage. Also sometimes it came up with a notification to sign in when I clicked it, it auto logged me in, due to the fact that I believe the WiFi credentials are embedded in the SIM card, didant think it was supposed to work like that.