An apparatus with the middle structure being layered between the first outer structure and the second outer structure. The operational circuitry includes a plurality of pockets for subscriber identity module cards, the pockets being arranged in two parallel rows in a planar fashion. The pockets of each row are placed next to each other and include open sides capable of receiving the subscriber identity module cards. The open sides of the pockets of different rows face in opposite directions. The middle structure includes a plurality of holes in rows for transferring subscriber identity module cards therethrough to the pockets or from the pockets, the holes of the middle structure of different rows facing in opposite directions, and the holes being on the open sides of the pockets.