Apple’s 6.1 iOS update seems to be one of the most challenged updates the company has released as users are complaining of battery drain, 3G and syncing issues. The situation has caused one carrier Vodafone to tell people not to upgrade to the releases – especially if they have an iPhone 4s.

In two weeks the world’s tech journalists converge on Barcelona for Mobile World Congress and there will be hell to pay if Cupertino doesn’t get the problem fixed by then and journalists, bloggers and others start to experience some of these problems. Apple, the clock is ticking… Will you get this problem solved in time?