Nokia 6120 classic (s60, Symbian 9.2, firmware v3.70) does not support the following commands at all:
(and maybe more)
All this commands return ERROR result code.
You can not get notification about new SMS!
You can not get access to SMS and Phone book storage and records!
All looks like Nokia does not support GSM07.07 standard .
This news was terrible surprise for me and my project .
Be careful, guys.