In the Arctic, with no reception, your phone is nothing but a poor-quality torch for as long as the battery lasts. By the end of the first day I didn't miss it any more. The world became tightly focused on the trail in front of me, the skis on my feet and the 12 people I was sharing the journey with.
You know the feeling when you're so knackered you're being sucked into the vortex of your own bed. Then imagine there is so little oxygen in the air, you'd be better off breathing with a plastic bag over your head. It's as warm as a freezer, the wind is so strong it's lifting up the sides of the tent. And your partner is frisky.