Compared with either of the studies’ findings, eMarketer estimates much lower smartphone penetration of 3.2% among US children ages 0 to 11, with the lower end of the age range pulling down that rate. By comparison, among those ages 12 through 17, eMarketer estimates smartphone penetration will reach 44% this year. Read the rest at eMarketer.
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![American Smart Phone Users By Age, 2011-2017 [TABLE] Table - American Smart Phone Users By Age](http://www.emarketer.com/images/chart_gifs/153001-154000/153342.gif)