My project is an Arduino with a sim card that's connected to a battery that acts as a switch however the Arduino's location is remote and I'm not sure if there is data coverage.

The data I am sending to the Arduino is no more than 20 characters long, it is simply a string.

I'm really stuck on a solution, is SMS a good option or just over 3G data connection or even the cloud?

  • 3G is an internet connection and you need internet to get to the cloud. I think SMS needs less signal than internet connection – chrisl Sep 26 '19 at 18:13

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