Net Applications’ Operating System Usage Trend shows that iPhone usage grew quickly with the initial launch, but held steady for the 3-4 months prior to the release of iPhone 3G, most likely due to the lack of iPhone supply prior to the launch of iPhone 3G, which would naturally stunt growth in usage.

With the release of iPhone 3G in July, its usage share rose markedly from 0.16% to 0.19%. However, the month of August shows a huge surge in usage to 0.30% market share. Apple’s Mac usage share holds steady at just under 8%. Apple’s Safari Web browser hit a new all-time high in August of 6.37%.

Operating System Web Usage Stats, August 2008:

See the iPhone OS usage trend from October 2007 – August 2008 here.

Net Applications’ OS Web usage stats details here.

Net Applications’ browser Web usage stats details here.

[Thanks to MacDailyNews Reader “JES42″ for the heads up.]