Default [Q] Wifi stopped working

OK. I've had the phone for 5 days - bought it in Malaysia - and it's been working just fine. Suddenly, back in Australia, Wifi no longer works and I can't even get the wifi icon to appear in the 'Status bar icons' at the top of the screen. Any idea what's going on? What's more, Wifi seems to have a life of it's own now - it keeps turning itself off when it feels like it and I have to manually turn in back on. Running KitKat.
Got it working with a reset