The invention relates to a protective case apparatus for a mobile terminal, having a case base body having a baseplate region for covering a rear of the terminal. The baseplate region has an abutment area for abutting the rear of the mobile terminal. The case base body also has side walls that are integrally molded on the baseplate region and are each configured to directly abut a respective narrow side of the mobile terminal and thereby to hold the mobile terminal against the abutment area. The case base body has only three side walls and one short side of the abutment area is without a wall. When the mobile terminal is arranged in the protective case apparatus, a narrow side of the mobile terminal that is arranged on the short side is not covered by the case base body.