FORTUNE -- The move from so-called feature phones to smartphones continues apace.
As of March 2012, 50.4% of U.S. mobile subscribers owned smartphones, up from 47.8% in December 2011, according to a Nielsen survey released Monday. Google's (GOOG) Android was the most popular smartphone operating system (48.5%), while Apple (AAPL) was the No. 1 manufacturer (32%).
No surprises there.
It's when the data are broken down by sex and ethnicity that things get interesting. According to Nielsen:
Which leaves, I guess, older white men carrying around the bulk of the remaining dumb phones.
For more on the survey, click here.
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