Wi-Fi CONNECTION PROBLEMS IPHONE 4?

I bought this iphone 4 a few days ago the Wi-Fi does not work, by that i mean won't slide across what so ever tried airplane mode and resetting the phone constantly to no avail, also tried resetting the setting the phone was already set to factory reset when i got it, the Wi-Fi did not work before i bought it tho so i knew what i was getting i just thought i could try and get it to work. I go told i might need a new circit board or something like that but apparently its very expensive.

any useful info would be great… I never owned an iphone in my life so i'm new to it thanks.

Wi-Fi in iPhones can be problematic and may even depend which iOS your have. When a co-worker got a new 4S it would not work on our office Wi-Fi until he could find Wi-Fi he could connect to, to update his iOS (which it refused to do using mobile data). Sometime later he found out that he could no longer even turn Wi-Fi ON (it just remained OFF). The Apple forum is loaded with Wi-Fi issues including hardware failures. He had to get a warranty replacement phone.

We had a similar problem with several new iPads our company bought, which would not work with our office Wi-Fi until their iOS was updated elsewhere.

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