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HUAWEI ME909u-521 LTE LGA Module
Application Guide
Network Searching and Registration Application
Scenarios
Issue 01 (2013-07-05)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
20
Figure 3-2 Manual search for networks
Manual search for networks
Start
Enable automatic
search for networks.
AT+COPS=?
Display the
networks found.
Select and register with a network.
AT+COPS=1[,<format>[,<oper>[,<rat>]]]
End
3.1.2 Troubleshooting
Scenario
Possible Error
Information
Solution
AT+COPS?
+CME ERROR: SIM
failure
No SIM card is detected. Insert
a SIM card.
AT+CREG?
+CME ERROR: SIM
failure
No SIM card is detected. Insert
a SIM card.