Apple sold 67m iPads through March 2012, and retains over 70% market share for premium tablets. Apple is aiming for the same long term dominance it enjoyed with the iPod, which maintained similar market share for a decade Microsoft and Google are taking radical steps to try to change this. Both are now making and selling their own hardware, while Google will sell a tablet at cost Microsoft and Google now have coherent tablet propositions, but they remain far behind on broader app ecosystems. Like Nokia, they are now back in the game, but they still have to play

Google+, the social network, has around 100 million users worldwide, although user growth appears to have stalled and usage is low on weak network effects

Facebook users, now 70% of the adult internet audience (excluding China), have no incentive to switch to Google+, starving the social network of vital momentum

Facebook is likely to dominate socially enhanced search, unless Google+ takes off, which seems unlikely

AOL, Microsoft and Yahoo! are partnering to cross sell non-guaranteed display inventory in the US, highlighting their need for scale in the face of increasing competition from Google and Facebook

Aggregating unreserved ads via their respective networks may boost share of ad budgets, but the focus on less valuable inventory means any impact is likely to be small

Short of extending the partnership to include all inventory and greater investment in technology there seems little the three companies can do to stop further erosion of display share, though revenues should continue to rise

Nokia has launched its comeback with two very solid Windows Phone devices at €420 and €270. Next year Nokia, like Apple, will have handsets with uniquely appealing industrial design. However, Nokia will not launch in the USA until 2012 and needs to add cheaper smartphones to the portfolio

Nokia and Microsoft face a hard struggle in establishing a third mobile app ecosystem. However, it is not impossible (Google has managed it in 18 months) and given more devices and the right execution they could manage it

2012 will be the critical year. We believe that the flaws in the Android proposition mean there remains a real window of opportunity. However, if Apple launches a cut-price iPhone then the market will be turned upside-down, again

In this report we outline the current state and likely development of the war between mobile platforms. We discuss installed bases and activity levels, the key issues facing Apple and Android, including Android fragmentation and Google's acquisition of Motorola, and go on to look at the tablet market and the outlook for RIM, Nokia and Windows Phone.

Microsoft’s new Windows Phone 7 operating system is launching with a big bang: ten handsets, eighteen operators, and a massive marketing campaign

The OS itself is positioned firmly in between iPhone and Android in terms of ease-of-use and customisability; it is as fast as the best-in-class but no faster; and its interface is bold but will not be to everybody’s taste

A lack of apps, limited distribution, and expensive handsets will likely limit sales in the short term. Longer term, being late in the game with no truly compelling unique feature will make building a major position very challenging, but not impossible