AdMob compares unique devices running the Android and iPhone Operating Systems in its network in the April 2010 AdMob Mobile Metrics Report. The Android OS had its greatest concentration of unique devices in North America (75 percent) in April 2010, followed by Asia (12 percent) and Western Europe (11 percent). iPhone OS devices are more broadly distributed worldwide, but also had its greatest concentration in North America (49 percent), followed by Western Europe (28 percent) and Asia (14 percent).
In the US there was a 2 to 1 ratio of iPhone OS devices to Android OS devices, worldwide that ratio expanded to 3.5 to 1. In AdMob?s network there were 8.7 million unique Android OS devices and 10.7 million unique iPhones in the United States in April 2010. But when non-phone devices running the iPhone OS ? the iPod touch and iPad ? are the number of unique devices jumps to 18.3 million in the US. Worldwide there were 11.6 million unique Android OS devices, 27.4 million unique iPhones and 40.8 million unique iPhone OS devices.
Highlights from the April 2010 AdMob Mobile Metrics Report include:
-The top five countries with the most unique iPhone OS devices were the United States (44 percent), United Kingdom (nine percent), France (six percent), Canada (five percent), and Japan (four percent).
-Over the past 12 months, unique iPhone OS device growth was strongest in Asia (474 percent), followed by Oceania (367 percent) and Western Europe (269 percent).
-The top five countries with the most unique Android OS devices were the United States (75 percent), China (eight percent), United Kingdom (three percent), France (two percent), and Germany (two percent).
-There were more Android devices than iPhones in China in April 2010 in the AdMob network. The top three Android devices in China were the HTC Hero, HTC Magic, and HTC Dream.
AdMob stores and analyzes handset and operator data from every ad request in its network of more than 23,000 mobile Web sites and iPhone, Android, webOS, and Flash Lite applications to optimize ad serving.