Sunday

U.S. mobile users sent an average of 357 texts per month in the second quarter of 2008 versus an average of 204 calls.

[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.