LG GW520 Guide De L'utilisateur page 256

Installing the SIM and battery
3 Install the SIM card
Slide the SIM card into the SIM
card holder making sure that the
gold contact area on the card is
facing downwards. To remove the
SIM card, gently pull it outwards.
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LG GW520 | User Guide
4 Install the battery
First insert the top of the battery
into the top edge of the battery
compartment. Ensure that the
battery contacts align with the
phone's terminals. Press the
bottom of the battery down until
it clicks into place.