Samsung OG-I9020FSTTMB - Manual (Page 10)

Your phone and accessories 10
NSOG-1.0-104 Nexus S Owner’s Guide
Remove or insert a SIM card
You must open the phone’s back cover and remove the battery to remove or insert the
SIM card.
S Remove the SIM card by sliding it out of its slot with the tip of your finger.
S Insert the SIM card by aligning it (notch to the lower right and gold contacts down)
and then sliding it into its slot.