An electronic device is provided that includes a housing having a first side with an insertion hole. The electronic device also includes a first tray configured to accommodate at least a subscriber identity module (SIM). The first tray is inserted into the housing through the insertion hole and is removably accommodated within the housing. The electronic device further includes a second tray configured to accommodate at least a memory card. The second tray is inserted into the housing through the insertion hole and is removably accommodated within the housing. In a state of being accommodated within the housing, the first tray and the second tray are at least partially disposed on the same plane, and at least a portion of the second tray is exposed to an outer surface of the housing while closing the insertion hole.