If your granny recently purchased her very first smartphone, she's not alone. According to the latest Q3 figures from Nielsen
, Americans between the ages of 55 and 64 are adopting smartphones at a faster rate than any other age group. Just about 30 percent of all mobile-equipped, soon-to-be seniors now own a smartphone, marking a five percent jump over Q2 of this year. But they still have a long way to go before catching up with the 25-34-year-old population, 62 percent of which wield an intelligent handset -- higher than any other age demographic. Overall smartphone penetration stands at 43 percent across US cellphone owners, with Android (still
) leading the way with 43 percent of the OS market, and Apple leading all manufacturers, with a 28 percent share. Check out the full report at the source link below, or head past the break for a more graphic demographic breakdown.