Just to be clear, I was not claiming that Obama phone lady was evidence of fraud. I was only pointing out it was a memorable moment during the 2012 election because that clip was replayed ad nauseam at the time. So I think people call them "Obama phones" because of a fairly successful campaign at pinning their existence or popularity on Barack Obama (where this woman credited her free phone to Obama), and this particular video clip was shown quite a bit at the time.
The fraud remark in my comment was about the other news video I linked and also a link to wikipedia. Free phones and phone plans are really, really low on my list of things I care about in terms of examples of bad governance in the US.