Quectel M35 Command Manual page 86

Reference
GSM 07.05
Parameter
<stat> 1) If text mode
"REC UNREAD" Received unread messages
"REC READ"
"STO UNSENT" Stored unsent messages
"STO SENT"
"ALL"
2) If PDU mode
0
1
2
3
4
<mode> 0
1
<alpha> String type alphanumeric representation of <da> or <oa> corresponding to the entry found
in MT phonebook; implementation of this feature is manufacturer specific; used character
set should be the one selected with command select TE character set +CSCS (see
definition of this command in TS 07.07)
<da> GSM 03.40 TP-Destination-Address Address-Value field in string format; BCD numbers (or
GSM default alphabet characters) are converted to characters of the currently selected TE
character set (refer to command +CSCS in TS 07.07); type of address given by <toda>
<data> In the case of SMS: GSM 03.40 TP-User-Data in text mode responses; format
− if <dcs> indicates that GSM 03.38 default alphabet is used and <fo> indicates that
GSM 03.40 TPUser-Data-Header-Indication is not set
− if TE character set other than "HEX" (refer to Command Select TE character set
M35_AT_Commands_Manual
<index>,<stat>,<sn>,<mid>,<page>,<pages><CR><LF><d
ata>[...]]
OK
2) If PDU mode (+CMGF=0) and Command successful:
+CMGL:<index>,<stat>,[<alpha>],<length><CR><LF><pd
u><CR><LF>
+CMGL:
<index>,<stat>,[alpha],<length><CR><LF><pdu>[...]]
OK
3)If error is related to ME functionality:
+CMS ERROR: <err>
Received read messages
Stored sent messages
All messages
Received unread messages
Received read messages
Stored unsent messages
Stored sent messages
All messages
Normal(default)
Not change status of the specified SMS record
Confidential / Released
GSM/GPRS Module
M35 AT Commands Manual
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