Can we talk about the Nokia 8210 candybar phones? Circa 1999 this thing was indestructible and had battery life that would probably outlast 3-4 iPhones. I think there is a market for these types of phones again. Even if it was ugly it was durable and functional. There is definitely a market for a phone that can be dropped and still function.
As others have mentioned, the new Nokia branded basic phones have good battery lifetimes, although the build quality is basic and I find the buttons quite plasticky