BASIC OPERATIONS
3 Deletes all read messages and sent and unsent device-orginated messages.
Leaves unread messages.
4 Deletes all messages.
For example:
AT+CMGD=1 (delete message at index 1)
AT+CMGD=2 (delete message at index 2 )
AT+CMGD=1,0
AT+CMGD=1,1
AT+CMGD=1,2
AT+CMGD=1,3
AT+CMGD=1,4
QuickCarrier
TM
USB-D MTD-H5 User Guide 23