Updating this thread for a recent and useful bit of information:
I used the code above for my own SMS testing recently. I discovered it would timeout when the modem reset. Reuben was able to quickly analyze the issue, and suggested the following fix (which I tested and confirmed as solving the issue:
Can you add this after the SerialCloud.read()?
if(currChar == 0) { continue; }
When the modem resets, you may end up with a null in the buffer and the Arduino String functions don’t handle this correctly and the string gets corrupted. I’ll make sure that this is added into our example code.
You can read the whole thread here: