Sony Ericsson GC79 - Manual (Page 66)

66 Additional Information
Emergency Calls
GC79s manufactured by Sony Ericsson do not support voice calls, hence their use for essential
communications (e.g. medical emergencies) is not possible.
Inserting and removing the SIM card – precautions against electrostatic discharge (ESD)
Do not touch the SIM card connectors. As a precaution, always make sure that the GC79 is already
in your hand before you insert or remove the SIM card.