Samsung SGH-X458CSA User Manual page 18

Getting Started
3. Slide the SIM card into the SIM card socket, as
shown, so that it locks the card into position.
Make sure the gold contacts of the card face into
the phone.
Note : When you need to remove the SIM card,
slide it, as shown, and take it out of the
socket.
4. Replace the battery, taking care to match the
teeth on the bottom of the battery with the
corresponding slots on the phone.
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