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I can send SMS from hyperterminal, but I can't receive SMS messages. I just keep getting OK response without listing the messages. Here are my commands for reading messages and what responses I get.

AT+CMGF=1
OK
AT+CMGL="ALL"
OK

As you can see above, I receive the OK but without any messages. I tried the following to indicate when I receive a new message. 

at+cnmi=2,1
OK

And when I receive a new message this is what I see. 

+CMTI: "MT", 0

The index for some reason keeps showing up as 0 even if there are more new messages.

Trying to read the new messages with at+cmgr=index returns an error.

It doesn't look like the messages are getting saved. This command gives me the following but I don't know what it means. 

at+cpms=?
+CPMS: ("SM", "ME", "SM_P", "ME_P", "MT"), ("SM", "ME", "SM_P", "ME_P", "MT"), ("SM", "ME", "SM_P", "ME_P", "MT")

OK

This is the datasheet for the GSM/GPRS Modem, so I don't know if I missed any other commands that are needed to receive messages or not. I have had this issue for couple of days and I just can't figure it out, I also tried a different sim card but same problem. Thanks!

Ammar
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  • This command did it `AT+CNMI= 2,2,0,0,0`, now new messages get printed out automatically. However, for some reason they won't get stored even though `at+cpms?` gives me `+CPMS: "SM", 0, 60, "ME", 0, 90, "SM", 0, 60` so there is space available. – Ammar Aug 18 '14 at 19:58
  • http://stackoverflow.com/questions/18935354/how-to-read-sms-from-mobil-phone-with-at-commands - http://stackoverflow.com/questions/10001622/how-to-read-sms-using-at-on-an-embedded-system-with-limited-memory?rq=1 etc? – Andy Thompson Aug 19 '14 at 07:44
  • What is the value for the at+cpms command (e.g. `at+cpms?`)? – hlovdal Aug 19 '14 at 22:05
  • @AndyThompson, those links weren't helpful. I already searched the site before posting this question. – Ammar Aug 20 '14 at 16:28
  • @hlovdal, this is the response. `+CPMS: "ME", 0, 100, "ME", 0, 100, "SM", 0, 0` – Ammar Aug 20 '14 at 16:28

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