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