This 3 in 1 small module with various functions that sending voice and short message, browsing webpages and collecting GPS 
Insert the SIM card and Arduino board, you can send voice and short message to other SIM cards
User can browse webpage via GPRS after connecting to the LCD and get the GPS info of the module
Support Quad Band: 850MHz / 900MHz / 1800MHz / 1900MHZ
Dimensions 22.8 × 19.8 × 2.5mm;
Operating temperature -30 ? to + 80 ?;
Operating Voltage 3.3V-4.2V;
Power voltage> 3.4V;
Standby average current 3ma less;
Support the GSM / GPRS four bands, including 850,900,1800,1900MHZ;
Support China Mobile and China Unicom's 2G GSM network worldwide;
GPRS Class 10;
Sensitivity <-105;
Support voice calls;
Support SMS text messaging;
Support GPRS data traffic, the maximum data rate, download 85.6Kbps, upload 42.8Kbps;
Supports standard GSM07.07,07.05 AT commands and extended commands Ai-Thinker;
Supports two serial ports, a serial port to download an AT command port;
AT command supports the standard AT and TCP / IP command interface;
Support digital audio and analog audio support for HR, FR, EFR, AMR speech coding;
Support ROHS, FCC, CE, CTA certification;
SMT 42PIN


Specifications:
Support Voice 
Support Short Message 
Suppor GPRS 
Support GPS
Size: 6.1x4.2x1.7cm/2.40x1.65x0.67inch