Nokia 6822 User's Card Manual page 13

S I M c a r d a n d b a t t e r y
To release the SIM card holder, slide the card holder to the right [4], and
open it by lifting it up [5].
Insert the SIM card into the SIM card holder [6].
Make sure that the SIM card is properly inserted and that the golden
contact area on the card is facing downward. Close the SIM card holder
[7], and slide it back into place [8].
Direct the back cover toward the locking catches on the front cover [9],
and slide the back cover until it locks into place [10].
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