Hi Srikanth,
Use the following below commands for delivery status. It is not sure that you get delivery report every time, it depends much on network service provider, some times the SMS may be delivered to the destination but you may not get delivery status.
AT+CSMP=49,167,0,0
OK
AT+CNMI=2,2,0,1,0
OK
AT+CMGS=”Mobile Number”
> Message content (Ctrl+Z)
+CMGS: 72
OK
+CDS: 6,228,”Mobile Number”,129,”08/10/22,10:08:35+32″,”09/10/22,10:08:38+32″,0
+CMT: “Mobile Number”,,”08/10/22,10:09:17+32″
All the best…