: Place your fingernail in the notch at the bottom of the phone and lift the cover off. Remove Battery : Lift the battery out of its compartment. Open SIM Holder : Locate the SIM card holder.
: Replace the battery, then snap the back cover back into position. Troubleshooting "Insert SIM" Errors
: 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.
: Lower the metal holder and slide it back to the right to lock the card in place.
If the phone displays an "Insert SIM" or "No SIM" error after installation, try these common fixes: