Each year, more parents send their young children to elementary school equipped with a smartphone.
For instance, the percentage of third-graders who reported having their own cellphone more than doubled from 19 percent in 2013 to 45 percent in 2017. Similar increases took place for fourth-graders and fifth-graders. About half of fourth-graders and 70 percent of fifth-graders went to school with a phone in 2017.
