In 2017, the smartphone penetration rate in the US has increased by 5% to record 82% after 77% in 2016. The highest increasing rate occurred among US smartphone users who age 45-54 years old, achieving 82% penetration rate in 2017 after 75% in 2016. But the category aged 18-24 years still has the highest rate of penetration during the past three years, followed by the category aged 25-34 years.
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