I have been using a pre-paid number for 3 years. For 1.5 years with my iPhone 4, and don't fit into any of those categories either. But I'm in Canada and in the minority. The prepaid company I'm with doesn't even sell smartphones. Why would they? They don't offer data. In Canada there's no such thing as pre-paid per-use data. You'd have an easier time finding a unicorn. There are some scammy pseudo-offerings from the bigger players like Bell, but they're just monthly plans without a contract and with barely any data.

Matt, I love Mad Men too, but I don't pigeon hole women that way. Some of them even drive now. And for someone who doesn't use a phone much, a dumb or feature-phone would serve the purpose (and wallet) a lot better than a smartphone. I don't see moms dropping 5 to 8 bills on a phone they're not gong to use much. If the number "in use" is truly in the 70th percentile, then my hypothesis is that the majority of those phones are off-contract re-use, not new purchases.

Anyone paying attention to jokers like NPD to make financial decisions might as well be rolling dice or having a monkey running their finances.

BTW, someone (NPD perhaps) should ask T-Mobile why they're rolling out a 1900MHz network by the end of the year... I can only think of one reason.