Nokia 5228 - Manual (Page 14)

device does not support the use of micro-SIM cards and use of incompatible SIM
cards may damage the card or the device, and may corrupt data stored on the card.
A SIM card may be already inserted in the device. If not, do the following:
1. Open the cover of the SIM card slot.
2. Insert a SIM card in the SIM card
slot. Make sure the contact area
on the card is facing up. Push the
card in.
3. Close the cover of the SIM card slot. Make
sure the cover is properly closed.
If the SIM card is not properly in place, the
device can only be used in the offline profile.
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