The Otterbox Defender, HardCandy ShockDrop and Griffin Survivor cases are all stylish choices that protect an iPhone 5s and its screen from damage and cracks. All three cases include a rigid screen protector to protect the iPhone's screen from scratches and direct-impact hits.
Screen cracks on smartphones can occur from direct impacts to the screen and the shock transmitted from impacts of the phone's case with a hard surface. The Defender, ShockDrop and Survivor cases use extensive shock-absorption layers to help reduce the chance of cracks from drops or other mishaps. The corners of these cases are additionally reinforced since impacts with the corner of the phone are especially likely to damage the phone's screen and electronic components.