Everything is wide open in mobile. So, here, in no special order, are 20 questions for 2015, any one of which would change things a lot. I've written about most of these topics already in 2014 - in 2015 they're even more interesting. 

It's been a long and (at times) interesting battle pitching iOS vs. Android. It's time to let it go: it's time to move on to a new set of questions. 

The UK media and telecoms regulator, Ofcom, produces an annual report surveying the global media and telecoms market. It's full of fascinating international comparisons - I've extracted some of the ones that caught my eye here. 

The mobile platforms wars are over, for now - Apple and Google both won. But nothing is settled. The nature and scope of Android is unstable, interaction models themselves are in a flux between apps,web, messaging and notifications, wearables are emerging and Facebook and Amazon haven't given up on controlling the interface. Time for new questions. 

I gave my macro theme presentation 'Mobile is eating the world' at Bloomberg's conference in Washington DC. Martha Stewart loved it. 

What does it mean when 4/5 of all the adults on earth are going to have a smartphone? Discussing fundamental change in scale with Steven Sinofsky

45 slides with video, looking at how the unprecedented scale of mobile is changing the internet, the tech industry and the broader economy.