the metal holder to the left (or as indicated by the "open" arrow) and lift it up.
Insert the SIM card and battery - Nokia Asha 311 - helpdoc.net
: Replace the battery, then snap the back cover back into position. Troubleshooting "Insert SIM" Errors
If the phone displays an "Insert SIM" or "No SIM" error after installation, try these common fixes:
: Place the Mini-SIM card into the slot with the gold contact area facing down . Ensure the cut corner of the SIM matches the orientation shown in the slot's diagram.
