Monday

American teenagers sent and received an average of 2,272 text messages per month in the 4th quarter of 2008 — almost 80 messages a day.

[Source]

About the author:

Iqbal Mohammed is Head of Innovation & Strategy at a digital innovation agency serving the DACH and wider European markets. He is the winner of the WPP Atticus Award for Best Original Published Writing in Marketing & Communication.
You can reach him via email.