My Nexus 4 will only connect to wifi at home. At work, it says there is an authentication error, and it only randomly connects to public wifi hotspots, usually gives me the same message. Seems I can't send any texts from work or out and about unless I switch on data. I don't want to do this when wifi is happening. Especially at work, this is an issue, as it means there's no internet connection for me all day long on my phone. I'm missing all sorts of messages. This has been going on for quite some months now, my IT department just shakes their heads, they haven't time for my private phone problems...what could be the matter? I used to have no problem at all.