My iPhone 4 Wi-Fi won't work?

So my Wi-Fi worked on my iPhone last night and I turned my phone off, and now it won't connect. My phone is a day old. What should I do?

It's an iPhone, you shouldn't be surprised. Try turning it off and on again

Its working dude… Try re-configuring your connection setting or better reset your iPhone if you feel any doubts…

I'm sick of that troubles of the apple, just buy ANDROID.