Smartphones capture nearly three of the average American’s waking hours.

Evidence

By 2015, the fourth screen would be in the hands of virtually everyone, seizing nearly three of the average American’s waking hours. And so it would become the undisputed new frontier of attention harvesting in the twenty-first century, the attention merchants’ manifest destiny. — Tim Wu, The Attention Merchants, 1038

Categorization

• XREF: Connects to the reader’s broader reading on attention industries and platform history as the endpoint of the newspaper-radio-TV-computer-scren lineage. — connects to: Millennials check their phones over five times more often than adults do daily. — Shoshana Zuboff, The Age of Surveillance Capitalism, 1429