A mobile phone case is provided having a cover shaped to fit snugly around and cover sides and a back of a mobile phone inserted into the cover, the cover having a flat back portion, and a slit formed in the cover between the flat back portion of the cover and sides of the cover for mounting the mobile phone case to a belt. The flat back portion is configured to open with respect to the sides of the cover along the slit such that the mobile phone case is capable of tightly receiving a belt within the slit between the flat back portion and sides of the case.