If you experience the following problem:
a) Modem Status on the device is "Disconnected".
b) Modem log (menu Settings > Sysinfo > Gammu log) says: "Cannot access SIM Card"
For example: Gammu log: Mon 2013/11/18 16:11:54 gammu-smsd: Terminating communication: Can not access SIM card
1) Make sure the SIM card is activated (you can send and receive messages in normal phone)
2) Please remember that you must insert a SIM card when the device is SWITCHED OFF.