Wi-Fi keeps dropping on my iPhone 4?

Nothing is wrong with my Wi-Fi but I'll constantly have to put my iPhone back on Wi-Fi about every 30 mins or less. Why? (And this is being in the same spot, my house. )

That reminds me the Wi-Fi issue with iOS 5; you look into that, I'm not using that kind of refuse.

My iPhone does the same thing you'll just have to deal with it until apple patches that.

There can be problem in your router so first check your router & exchange it and buy the best one which can give you more range and more time you can use it.