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[General] SIM 900A call not going

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gupta.abhi96

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I am using Arduino Mega 2560 for a project which requires GSM SIM Modules and i am using SIM 900A.

While trying to call or message , arduino is working that is code is running even the serial monitor displays the working code but there is no call or message.

please help Code.jpgerror.png
 

pisoiu

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Before sending dial command, you should check if the modem is registered, AT+CREG?
 

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