Every third sold first-gen iPhone is still in use

Today mobile ad firm AdMob has released another Mobile Metrics report that consists of information about the software and hardware that had been used by Apple's handsets owners in March.

The study reveals that only 2% of all Apple devices with iPhone OS are first-gen iPhones. But it is important to notice that since the first sale of iPhone OS-based device Apple sold over 85 million of its worldwide. If we'll take the period between June 2007 and July 2008 (time when iPhone 3G was shipped), then it turns out that company sold 6.1 million of iPhone 2G, which is approximately 7% of the total sum of handsets that were sold.

Fortune Brainstorm Tech journalist Philip Elmer-Dewitt continues to count and then sums up:

"If 7% of those iPhone 1Gs are driving 2% of AdMob's traffic that suggests that nearly one in three is still ticking - and visiting the Web."

Obviously, the popularity of the first-generation iPhones will be further reducing without iPhone OS 4.0 support.

AdMob also found that the most popular iPhone in March 2010 was iPhone 3GS, which generated 39% of all traffic. This is much higher result than 9% in September 2009.

Other information can be seen above on the graphs.