According to mobile advertisement firm AdMob’s Mobile Metrics report for February, the iPhone now accounts for one-third of all worldwide smartphone web traffic, and half—49.5%—of US traffic. Interestingly, the iPod touch ranked second in worldwide handset traffic, with 6.7%, following only the iPhone with 11.2%. Apple ranked second in worldwide handset share, with 17.9% of requests compared to Nokia’s 30.2%. In the US, Apple ranked first with 27.1% of requests, and both the iPhone and iPod touch hold a greater percentage of requests, the iPhone leading with 16.4%, followed by the iPod touch with 10.6%. Overall, worldwide requests were down 3% month over month to 6.6 billion.