The provided reference doesn't give an exact number of children with mobile devices, but it indicates that adoption rates are high among children and teens.
While we can't give an exact number, we can summarize the data given:
- Age 11: 53% of children have a smartphone.
- Ages 13-17: Over 95% of teens have access to a cell phone.
Therefore, mobile device ownership is prevalent amongst older children and teenagers in the United States, but the exact number of children who own a mobile device is not explicitly stated in the provided reference. Further data would be needed to determine the precise figure.
