Besides cars Land Rover is able to manufacture cell phones too. And the company seems to follow the same concepts when building phones as they do when making cars. Land Rover phones are very durable and you can expect them to withstand some harsh conditions.
The S1 is so tough that it could actually stand being run over by an actual car. The phone can resist temperatures of up to 300 degrees, it can be immersed in water or any other liquids and it will surely work nicely in colder environments. The following 3 print ads show that phone is really strong.