iPhone 4S v Nokia Lumia 800

I am in the rather strange position of having two smartphones in daily use. My “main” one is my iPhone 4S, (on the Orange network) and I have just been given – literally – a Nokia Lumia 800 (on “3”) to test drive.
They are both flagship models for their respective companies, so it makes sense to compare them in active use.

The phones relative specifications and features are well-covered on other sites, so I will concentrate on using them in different scenarios – work, play and in the great outdoors. I’ll also focus on the camera and music capabilities.