SIMCOM SMS AT

Excute	Feedback	Read	Feedback	Write	Feedback	Test	Feedback	Description
AT+CNMI	+CMTI:"SM",2	-	-	-	-	-	-	Set the new message remind, for example AT+CNMI=2,1, when set is on and message box is NOT full, message is stored at position 2
-	-	AT+CMGF?	+CMGF: 1	AT+CMGF=0	OK	-	-	Set the module message mode set either at PDU(0) or text mode(1)
-	-	AT+CSCS?	+CSCS:"GSM"	AT+CSCS="GSM"	OK	-	-	Set TE character set, set AT+CSCS="GSM" for english only message or set AT+CSCS="UCS2" for other lanuage
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-	-	-	-	-	-	-	-	-
-	-	-	-	-	-	-	-	-
-	-	-	-	-	-	-	-	-
-	-	-	-	-	-	-	-	-

By AT Commands

• To end of send message, send 1A by hex

Command	Description	Return	Result
AT+CMGR	read message, for exmple, AT+CMGR=1 to read message at position 1	-	-
AT+CMGS	send message, send 180 bytes at GSM mode, or 70 Chinese character at UCS2 mode, AT+CMGS="18576608994"	will return ">" and then type message, then end up with hex value 1A( 0X1A, "CTRL+Z"), send 1B to cancel "ESC"	and finally return: +CMGS:156, in which 156 has meaning.
AT+CMGS (e.g. Chinese SMS)	set AT+CMGR=1; AT+CSMP=17,167,2,25; AT+CSCS="UCS2" now the message can be by Unicode, AT+CMGS="00310035003100320034003500330032003600370032" (number 15124532672)	will return ">" and then type message 00530049004D00390030003000414E2D82F1658777ED4FE153D190016D4B8BD5, end with 1A	-
AT+CMGD	delete message, to delete message at postion 1: AT+CMGD=1	OK	-
AT+CPMS	inquiry or set message storage settings	AT+CPMS? to check how many message can be stored maximally and how many message stored	：+CPMS:"SM",1,50, means support 50 sms max and 1 sms are stored now

send SMS steps (EN)

• General send SMS steps

AT+CSCA="+8613800755500" -> OK // set message center
AT+CMGF=1 // text mode 
AT+CSCS="GSM" // EN mode
AT+CMGS="18576608994"
>

• Enter content, and end up with 1A to send, or 1B to cancel.

read SMS steps (EN)

pre-setup

AT+CMGF=1  // set message mode - text
AT+CSCS="GSM" // set message language mode - EN 
AT+CNMI=2,1 // set new message remind

when get SM notification reminder on serial

"SM",  2 // 2 messages in inbox
AT+CMGR=2 // read message at position 2, AT+CMGL="ALL" is to read all
AT+CMGD=2 // delete SMS at position 2

• message will be received in unicode or hex, please convert the text

send SMS steps (CN)

AT+CMGF=1 // set message mode - text
AT+CSCS="UCS2" // set message language mode - other language 
AT+CSMP=17,167,2,25 // set the text mode parameters
AT+CMGS="00310035003100320034003500330032003600370032" // this is the phone number in UCS2 
>

• after this, enter text message in HEX "00530049004D003700360030003000584E2D658777ED4FE16D4B8BD5", end up with 1A

resend SMS steps (CN)

AT+CMGF=1    	 // set message mode - text
AT+CSCS="GSM"	// set message language mode - EN
AT+CNMI=2,1   	// set new message remind

Read new message - > AT+CMGR=21 // message number 21

SMS

Setup

• AT+CMGF=1 // text mode
• AT+CSCS="GSM"

Send SMS

• AT+CMGS="18576608994" // end 0x1A to end

Receive SMS

• AT+CNMI? -> +CNMI: 2,1,0,0,0

• Receive on time mssage: +CMTI: "SM",5
• Location at index 5
• read by AT+CMGR=5

Read CMD	Read feedback example	Read Feedback Description	Write Command	Header text
AT+CPMS?	+CPMS: <mem1>,<used1>,<total1>,<mem2>,<used2>,<total2>,<mem3>,<used3>,<total3>	+CPMS:"SM",2,50,"ME",0,50,"MT",2,100	-	-
AT+CMGL=?	-	-	-	-
-	-	-	AT+CMGR=1	read message at index 1
Example	Example	Example	Example	Example
Example	Example	Example	Example	Example