Motorola razr Quick Start Manual page 4

Put in a physical SIM card
Your phone supports using a physical SIM card.
1 With the phone closed and facing down, insert the SIM
tool into the tray hole to pop out the tray.
Make sure you use the correct size SIM card and don't cut
the SIM card.
2 Insert the SIM card with the gold contacts down, then
gently push the tray into the slot.
Nano
SIM