I would consider my lifestyle somewhat active and my phone takes a beating. That’s one of the reasons why in the late 90’s I always got Nokia phones. Those phones were seriously durable and could take a serious beating. Only problem was the phones were pretty limited and I eventually fell away from my Nokia loyalty. I gave into the Blackberries and Android phones because they were much more robust in features and capabilities. However they’re not phones that you can really use to tackle the elements of mother nature. A bit of sand here and a bit of water there and your the phones are toast! But Casio has developed a mobile phone that can withstand the lifestyle of Bear Grylls!
The Casio Brigade is the toughest phone that I’ve come across so far. Casio subjected the mobile device to be tested up to military specifications. Some of the criteria was dropping the phone 26 times from a height of 1.5 meters, submerged in 3 feet of water for 30 min, and exposing it to extreme hot/cold temperatures for 96 hours. The phone passed these tests and I am sure it can handle some everyday or special abuse. The phone has mobile web, navigation, camera, video, and a full keyboard. Now I may not use this phone as my everyday mobile phone because it’s a bit on the bulky side, but it is a phone to use when hiking, camping, or even doing water activities. 
But much like answering a call in the grocery line or in a movie, be selective on where you use it. I would hate to hear a cellphone ring when I was surfing or trying to do something relaxing away from the hustle and bustle of everyday. 