My iphone can't see any wifi networks

my iphone can't see any wifi networks ... i tried to reset network setting and reset all setting and update the ios system but no way

I, too, fear it might be a hardware problem . I removed all security from my router but still no networks appear in the list nor can I connect directly by typing in the SSID. Tried two routers: Apple Airport Extreme and a Linksys something-er-other provided by Bell.
I will give HP a call tomorrow and see if they can sort this out.
Thank you for your help/advice!
Edit: almost certain it's a hardware problem: I clicked on the Help button while on that "Scanning for networks" dialog during initial setup and as one of the "helpful" suggestions, it said my Mac address was 00:00:00:etc.

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    2. reset location and privecy  -> did not solve the problem.
    3. reset all definitions            ->  did not solve the problem.
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