but this is the first one we’ve seen that turns your Arduino into a proper cell phone. The shield is based around the SIM900 GSM/GPRS radio module, and is compatible with the SIM908 GSM/GPRS ...

The system supports Arduino and ESP controllers. On the phone side, you can use Android or iOS. The RemoteXY site has plenty of examples. We know there are other ways to do this, including just ...