SIM900 GSM / GPRS Shield for Arduino Uno + Antenna | Arduino, DIY \ Shields Arduino, DIY \ Communication \ GSM, GPRS & GPS
SIM900 GSM GPRS Shield with Arduino | Random Nerd Tutorials
Arduino Sim900a Gprs Module Interfacing With Arduino Uno | Arduin...
GitHub - mvento/SIM900-lib: Simplest way to make GET and POST request over GSM network with an Arduino and a SIM900 module
Sim900/sim900A Mini Module With Arduino UNO The Arduino IDE includes a library for their GSM shield using the Quectel M10 GSM chip, and Surprise! it is almost identical to the Sim900A chip!