Although there's life left in Windows 10 Mobile in terms of updates and support, new hardware is almost non-existent, plus repairs and spares for older hardware are becoming tricky - so it makes sense for everyone to be aware of the best of the rest, flagships from other platforms. And with the productivity-centric Blackberry KEY2 in the office, it seemed appropriate to put up a direct comparison with a Windows 10 Mobile handset, an OS which is itself - these days - equally centred on 'getting things done'.