Overview Connect Numbers SMS FlashSMS AT+ OBEX Home
Q.:  My phone supports calendar, custom ringtones, logos etc…
A.:  Most companies have an extended AT command set. Unfortunately not all are public but some can be downloaded free of charge.

Company  Namespace  Notes 
Alcatel AT+… registration required
Benefon AT*Be… registration required
Ericsson… AT*E… registration required
Mitsubishi (Trium) AT~M… no official documentation
Motorola AT+M… limited official docs (calendar)
Nokia… AT*Nokia…
AT*N…
no real extended command set
Option Wireless AT_O… documentation behind an IMEI check
Panasonic AT+C… no official documentation
Sagem AT+K… no official documentation
Samsung AT+… no official documentation
Siemens / Bosch…  AT^S… registration required
Sony… AT-S… no official documentation
Wavecom AT+W…
AT+S…
documentation behind an IMEI check

Q.:  If your phone or company is not listed you have to scan…
 Ericsson Nokia Siemens Sony @