the connection and parts in that SD card slot are designed to store data.
a sim card slot and memory card slot need different components and connections. a technician can let you know how it works but if you try to force a sim card in there you risk damaging your device and voiding warranty.
now you know this you know to buy a cellular model next time, if you really want data on the move then WIFI Hotspot from your phone (drains your phone battery quicker) or get a mobile WiFi device (MIFI) then put a data sim in that and you got data on the move.