How to fix iphone 3g no Wi-Fi?

Thank you

I've had good luck with the repair services for iPhones on ebay. Be sure they have a lot of positive feedback tho. If you want someone local, check Craigslist (MEET ONLY in a public place) or a local store that sells iPhones.

Is Wi-Fi on? Is airplane mode off? Because you didn't really write this well I can only answer with questions.

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