US smartphone penetration growth rate update

US smartphone penetration growth rate update:

The survey data from comScore is in and it suggests that smartphone penetration increased by a significant 1.58%. It is now 35.1% with 82.2 million users.

The weekly new user rate was about 863k/wk during July or about 586k/wk average over the last three months. I plotted the weekly add rates for the last 18 surveys and overlaid the three month moving average.

The chart shows that there is an upward slope to the upper and lower bounds of the moving average. Extrapolating trend forward gives me confidence in projecting 50% penetration by July 2012.