All text messages sent to my cellphone will now be picked up by smsd and delivered to my local mailbox.

Yep, I am laaazy. Especially when I need to browse through Samsung menu to read the messages which is scary by itself.

The only thing Samsung SGH-E390 needed to start working is to switch local message store to SIM, since it does not advertise this message store (broken software):

+CPMS: "ME",0,200,"ME",0,200,"ME",0,200

The required AT command is:

AT+CPMS="SM"

Ok, now I need to make message sending work. For now it just times out after PDU and ^Z is sent to the modem.

Next thing to try: SNMP