> TeliaSonera repeated its forecast for flat sales and profit margins in 2014 but flagged risks of slowing revenues. Article
> VKontakte, Russia's largest social network, removed CEO Pavel Durov from his job after a resignation letter tendered early April wasn't fully withdrawn. Article
> Apple upgraded its iOS mobile operating system to address potential flaws in the touch screen keyboard and biometric sensor. Article
> Smartphone chipset maker ARM reported a significant slowdown in royalty revenue growth in the first quarter of 2014, when the figure grew 3 per cent compared to 32 per cent in the same period in 2013. Article
> Nokia said it expects to complete the sale of "substantially" all of its devices and services unit to Microsoft on April 25. Release
And finally...WhatsApp CEO claims 500 million users and takes a potshot at "shitty" rivals. Article