Can I use my iPhone 4 wi-fi connection to give my desktop internet?

I have an iPhone with a internet connection over the wi-fi. Can I connect my desktop to the internet through my iPhones' connection?

Yes, its called tethering. If you had a jailbroken phone, I think there are apps for it. If its not jailbroken, last I heard you had to pay some sort of subscription for it, maybe.

http://www.wikihow.com/Activate-Internet-Tethering-on-the-iPhone

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