Samsung SGH-t609 - Manual (Page 11)

Section 1: Getting Started 7
Activating Your Phone
Section 1
4. Grasp the top of the battery with your finger and lift up in
the direction of the arrow (1). Remove the battery.
5. Slide the SIM card into the SIM card socket so that the
card locks into place. Make sure the gold contacts of the
card face into the phone.