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HUAWEI ME909u-521 LTE LGA Module
Application Guide
Initialization Application Scenarios
Issue 01 (2013-07-05)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
17
2.3.2 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.