I need help with the arduino sim 900 shield,I have tried all the possible connections and I codes I only get infinite question marks or unreadable characters in the serial monitor. I am in Ghana,can anyone help me?

Problem using the GSM shield 900

remspeter September 17, 2018, 6:12pm 3

Hi, do you have the Arduino board separated from the SIM 900 board ? I am in Argentine. Best regards.

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