Yes, you can actually make cell phone calls with your Arduino now. The real star of this build is the new GSM Shield library.

The Arduino is an excellent first embedded development kit, provides a great introduction to electronics, and has the potential to get children into programming.

Real Time Home Security System using GSM Technology-An Anti-theft System! This project deals with the design & development of a theft control system for home, which is being used to prevent/control ...

The Arduino MKR series of boards - aimed at the IoT - has two new members, aimed at LoRa and GSM connectivity.