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Topic: no modem answer (Read 652 times) previous topic - next topic


May 02, 2017, 09:40 pm Last Edit: May 02, 2017, 10:42 pm by dsp1207
I just installed the GSM Shield 2 on my Arduino Uno.

I'm running the Test Modem code and I keep getting the "ERROR, no modem answer." message, meaning modem.begin() has failed (?).

Is there any way I can debug this? I just have no idea where to go from here and need some guidance.


EDIT: Funny, just tried Send and Receive SMS examples and those both work. What gives? So the Getting Started guide actually got me stuck on the first step.

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