9fc134ce_or_GSM_GPRS_Modem__AT_Commands__AT_command
[Meaning] Write message to memory [AT command] 
+CMGW
+ C M G S
+ C M S S
+ C M G W
+ C M G D
+ C M G C
+ C M M S
SMS Tutorial: How to Send SMS Messages from a Computer/PC Using a Mobile Phone or GSM/GPRS Modem? AT Commands
AT command