Texting is the dominant daily mode of communication between teens and all those with whom they communicate.

The volume of texting among teens has risen from 50 texts a day in 2009 to 60 texts for the median teen text user. The frequency of teens' phone chatter with friends - on cell phones and landlines - has fallen. But the heaviest texters are also the heaviest talkers with their friends.

Smartphones are gaining teenage users. Some 23% of all those ages 12-17 say they have a smartphone and ownership is highest among older teens: 31% of those ages 14-17 have a smartphone, compared with just 8% of youth ages 12-13.

See the full report which includes the demographics of teen smartphone owners and texters, as well as findings about how they use their devices.