Samsung SGH-P207ZKACIN - Manual (Page 11)

Section 1: Getting Started 7
Activating Your Phone
Section 1
Make sure the gold colored contacts of the card face into
the phone.
4. To remove the SIM card, slide it upwards, as shown, and
take it out of the socket.
5. Replace the battery so that the tabs on the end align with
the slots at the bottom of the phone.