Can a random micro sim card work for the iphone 5? - 2

Can i just buy a small (prepaid) sim card to put into my Iphone 5 for me to call someone? Or is the iphone 5 sim card specialized? Or is this not what a SIM card does?

Added (1). SIM CARD NOT SD CARD

The iphone 5 has a nano sim not a micro sim, so you can convert the micro sim to a nano sim with the link below. But either way you need to be sure the iphone is unlocked before the prepaid sim card will be able to work.