James Rosewell writes:

Microsoft’s Windows 8 announcement today is as significant to the mobile industry as Apple’s iPad launch 2 years ago. Windows 8 will work on tablets, ultra books, desktops, laptops and 82” big screens. Not only that but it’ll support touch on all these devices.

“We're in a world where tablets are about touch, and PCs are about keyboard. We're changing those assumptions” Steven Sinofsky President, Windows and Windows Live Division says.

Mark Bridge writes:

Earlier today, Three.co.uk published a blog post headlined “4G comes to Three”. But it hasn’t.

I spent most of this morning here at Mobile World Congress muttering about the blog before returning to it this afternoon. And suddenly it’s changed.

The blog post remains. The headline is completely different. Now we’re told “Three to launch leading edge 3G service”.

James Rosewell and Mark Bridge report from Mobile World Congress 2012 in Barcelona. In today's programme they discuss Tuesday's news from the GSMA, Eric Schmidt's keynote speech, and the iZettle mobile payment service.

Facebook says it’s currently working with AT&T, Deutsche Telekom, Orange, Telefónica, T-Mobile USA, Verizon, Vodafone, KDDI and Softbank to introduce operator billing.

This would enable Facebook users to buy digital goods via a mobile web application and pay by charging the purchase to their mobile phone account.

Mobile payment company iZettle, which launched its plug-in ‘chip card’ reader and associated mobile payment app in Sweden last year, has now launched a beta version of its service in Denmark, Finland and Norway.

The first 5,000 chip-card readers in each country will be available free of charge.