trusty Nokia 6310i
I had one of those for about 7 years. It survived being hurled across the room against a wall on one occasion. I finally retired it in 2009.
I've used a variety of phones since, none of which were particularly good, mainly because of colour displays that are impossible to read outside in daylight, and am currently using a 3410, which is not as good as the 6310, but perfectly functional for phone calls and receiving messages.
I've had a company iphone 4s which was great for emails and camera etc., but not as good as a phone.
SD