The inevitable increase in popularity of the ‘smartphone’ is reflected in the latest report from mobile advertising company AdMob. It says smartphones received 33% of its worldwide ad traffic in February 2009, up from 26% six months ago. The Symbian operating system is still the most popular global choice with a 43% share and six of the top 10 handsets; in the UK Apple devices (iPhone and iPod Touch) account for a third of all ads seen. However, as we’ve said previously on The Fonecast, these results only reflect the clients that AdMob deals with. AdMob managed 6.6 billion ad requests in February; a 3% drop from January that the company says is due to the short month. [PDF document; blog post]