Embodiments of the present disclosure are directed towards a memory device removably couplable with a mobile device. In some embodiments, the memory device may include a PCB insertable in the mobile device. The PCB may include a first chip (a micro SD device); a second chip (a SIM card); a first contact electrically coupled with the first chip, to provide a first communication interface between the first chip and the mobile device; and a second contact electrically coupled with the second chip, to provide a second communication interface between the second chip and the mobile device. The first and second communication interfaces may provide for respective communications between the micro SD device and the mobile device, and between the SIM card and the mobile device, at the same time, when the PCB is removably coupled with the mobile device.