Cellphones have come a long way since the two-pound, $3,995 Motorola DynaTAC 8000X was first introduced in 1984. Subsequent generations of mobile phones continued to evolve and became more affordable and portable. the fact that 75 percent of all kids ages 12–17 have cell phones and less than 12 percent of students attend schools where cell phones can be accessed at any time—and almost 70 percent attend schools where cell phones are banned from the classroom.1