Hi
I have the same problem with an MC7304 modem.
Manufacturer : Sierra Wireless, Incorporated
Model Number : MC7304
Revision : SWI9X15C_05.05.67.00 r31378 CARMD-EV-FRMWR1 2016/03/11 14:58:53
AT+CMGS=17
21000B911487967092F6000004D4F29C0E
+CMGS: 58
OK
+CDSI: “ME”,7
AT+CPMS?
+CPMS: “ME”,0,255,“ME”,0,255,“ME”,0,255
OK
AT+CMGR=7
+CMS ERROR: 321
It doesnt matter if the storage is “SR” or “SM” or “ME” or “MT”
AT+CPMS=“SR”,“SR”,“SR”
+CPMS: 0,0,0,50,0,50
OK
AT+CMGS=17
21000B911487967092F6000004D4F29C0E
+CMGS: 59
OK
+CDSI: “SR”,8
AT+CMGR=8
+CMS ERROR: 321
Has anyone a solution to read the delivery request?
Thanks in advice.