LG GD900 Guide De L'utilisateur page 270

Installing the SIM and battery
3 Install the SIM card
Slide the SIM card into the SIM
card holder. Make sure the gold
contact area on the card is facing
downwards. To remove the SIM
card, gently push it until it clicks.
Gently pull it out.
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LG GD900 | User Guide
4 Install the battery
Insert the top of the battery
into the top edge of the battery
compartment first. Ensure that
the battery contacts align with
the phone's terminals. Press the
bottom of the battery down until
it clips into place.