Adafruit-FONA-800-Shield-Voice-Data-Cellular-GSM-for-Arduino-Adafruit-2468-P-The-Adafruit-FONA-800-Cellular-GSM-Voice-&-Data-Shield-for-Arduino-could-put-your-next-project-in-touch-with-the-world-Send-&-receive-SMS-messages-&-GPRS-data-make-&-answer-phone-calls-&-listen-to-FM-radio-In-fact-enough-functions-to-build-a-working-phone-including-driving-a-vibration-motor-&-recharging-a-Li Po-battery-from-the-USB (Universal Serial Bus)-power-The-board-needs-a-microcontroller-to-drive-it-&-will-work-