Seiko Epson Corp. has developed an ultra-sensitive, ultra-compact GPS module to meet high demand from manufacturers of mobile phones and other handsets with GPS functionality. Volume shipment of the S4E19863 series has already begun, the product has been loaded in all GPS-capable models of the FOMA903i series phones recently released by DoCoMo. According to the companies press release this chip is the world’s smallest commercial GPS module at 7 mm x 6 mm x 1.28 mm.

Source- Wireless Mobile Telecom