Abstract: A protective case for a mobile device is disclosed. The back face of the protective case includes a removable and interchangeable back plate with tension cord that is designed to hold the user's personal items like ear buds, keys, credit cards, license, etc. Apertures and/or buttons are provided on the side walls and back face wall of the case to facilitate access and/or operation of the mobile device (e.g., volume buttons, silent switch, power and data port, on/off button, silent switch, speaker and microphone, and camera and flash/illumination controls). Various aspects of the construction and configuration of the case, back plate and storage compartment are disclosed.