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Mobile data connection troubleshooting (view source)
Revision as of 22:14, 19 May 2020
, 22:14, 19 May 2020no edit summary
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* Most likely you will not see anything and that’s because screen echo might be disabled. '''ATE1''' command will enable it so that you can see what you write. '''at+qcsq=0''' and '''at+creg=0''' command stops showing unnecessary output:
* You probably won't see anything when you type commands, and that’s because the screen echo may be disabled. '''ATE1''' command will enable it so that you can see what you write. '''AT+QCSQ=0''' and '''AT+CREG=0''' command stops showing unnecessary output:
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ATE1
ATE1
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* Check communication (wait for the module to respond OK):
* Check communication (wait for the module to respond '''OK'''):
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AT
AT
==Debugging process==
==Debugging process==
* Query SIM card status:
* If PIN is required, initialize modem with your PIN code:
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AT+CPIN="xxxx"
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* Use command '''AT+CPIN''' to query SIM card status:
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AT+CPIN?
+CPIN: READY
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'''Note:''' Reboot the module if it fails to identify SIM
* Use command '''AT+CREG''' to check GSM connection:
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AT+CREG?
+CREG: 0,1
OK
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'''Note:''' OK means that the module has registered on CS domain service
* Use command '''AT+CGREG''' to check PS Service:
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AT+CGREG?
+CGREG: 0,1
OK
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'''Note:''' OK means that the module has registered in UMTS/LTE network
9. Configure APN, user name, password and auth type by AT+QICSGP
9. Configure APN, user name, password and auth type by AT+QICSGP
• AT+QICSGP=<contextID>[,<context_type>,<APN>[,<username>,<password>)[,<authentication>]]]
• AT+QICSGP=<contextID>[,<context_type>,<APN>[,<username>,<password>)[,<authentication>]]]
