Unibet boss Petter Nylander is happy to report that the company’s active mobile users more than doubled during the fourth quarter of 2009, rising to 5,372 from 2,281 in Q3. The company’s mobile product, which is provided by Mobenga, really took off after the Q3 relaunch of the iPhone version. But can these numbers continue to climb considering mobile telecom networks are already straining to accommodate the influx of data-ravenous smart phones? For more on Unibet’s Q4 state of the union, click here.