A system for accommodating a mobile telephone in a compartment in a motor vehicle. The compartment is electromagnetically shielded against the emission of radio signals from the mobile telephone. The system includes a connector for transmitting an antenna signal from an antenna of the motor vehicle to the mobile telephone, an electromagnetically shielded housing with an opening for inserting the mobile telephone into the housing and for removing the mobile telephone from the housing, and an elastically deformable retaining element that is designed to be electromagnetically absorbing. In a closed state of the housing in which the opening of the housing is at least partially closed, the opening at least partially shields against the emission of radio signals of the mobile telephone from the housing. In the closed state the retaining element secures the mobile telephone in a temporary position.