Siemens MC35 Command Set page 233

AT Command Set
AT+CMGS=123456
+CME ERROR: 10
Example 2 The application tries to send a short message while the SIM card is present, but
PIN authentication has not yet been done.
AT+CMGF=1
OK
AT+CMGS=123456
+CME ERROR: 11
MC35_ATC_01_V05.00
// Equivalent to + CMS ERROR: 310
// Equivalent to + CMS ERROR: 311
Page 233 of 256 15.07.2002