One of the most basic accessories you should get for your smartphone is a protective case. The HTC HD2 Messenger Case provides stylish protection with a simple slip-in design. The case is made of leather and has a soft microfiber lining and includes a belt holster. And don't worry: though the name says HD2, the case will also fit the HTC Evo 4G. The Messenger Case is on sale through HTC's official store for $17.