Part of my reluctance to get a smart phone was due to worrying abut breaking them. I had to get a smart phone for work so having bought a Sony Xperia Z3 that is waterproof etc I wanted to be able to protect it properly without buying a cheap Chinese leather flip case with no soul. I bought a cheap (£2.99) silicone coated base, sanded off the silicone on the face (otherwise the glue doesn't stick) and then glued a leather cover to it. I' pretty happy with how it turned out and I don't have to worry if I accidentally put my house keys in the same pocket!