I have had nothing but trouble with my iPhone 4 since upgrading my iMac to Lion.
Now, It does not even show up in iTunes. I get repeated prompts to enter my login/password and iTunes then crashes.
This has happened for a horrible amount of times.
Now, whether by USB or wi-fi, my iMac does not see my iPhone at all.
I have tried all the suggested solutions to no avail.
My Macbook pro sees the iPhone, so I doubt it's the phone.
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