Have you ever seen a smaller GSM module?
22 mm x 22 mm x 3 mm only
Ultra small size (22x22x3 mm), lightweight (3.2 g) and easy to integrate
Low power consumption
R&TTE type approval plus CE, GCF, FCC, PTCRB, IC
Full RS232 on CMOS level with flow control (RX, TX, CTS, RTS, CTS, DTR, DSR, DCD, RI)
Embedded TCP/IP Stack UDP/IP Stack , Embedded FTP and SMTP Client
Read more: http://ow.ly/1gZMa