Troubleshooting; Sending Short Messages; Reference Process - Huawei ME936 Application Manual

HUAWEI ME936 LTE M.2 Module
Application Guide
Figure 6-5 SMS initialization process – part 3
AT+CMGF?
+CMGF: 0
OK
AT+CMGF=0

6.2.2 Troubleshooting

Scenario
Error information is
returned in response to
one of the previous
commands.

6.3 Sending Short Messages

6.3.1 Reference Process

Command
AT+CMGF=0
OK
AT+CSCA?
+CSCA: "13800688509",129
OK
Issue 02 (2017-12-11)
OK
End
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Possible Error
Information
+CME ERROR: SIM
PIN required
+CMS ERROR: SIM
busy
Description
Sets the short message format to PDU.
Queries the SMSC address.
SMS Application Scenarios
Solution
Enter the correct PIN.
SIM card initialization has not
completed. Try again later.
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