SIRF TEAMS WITH SKYHOOK WIRELESS TO DELIVER GPS-WIFI HYBRID TO ACCELERATE LOCATION-BASED SERVICES

SAN JOSE, Calif. and BOSTON, Mass., February 9, 2007 – SiRF Technology Holdings, Inc. (NASDAQ: SIRF), a leading provider of GPS-enabled silicon and premium software location platforms, and Skyhook Wireless, Inc., provider of the Wi-Fi Positioning System(TM) (WPS), today announced that SiRF has licensed the WPS in order to create a single positioning system for wireless carriers that combines the best of both GPS and Wi-Fi technologies. This system, which is scheduled for release as part of SiRF's Multimode Location Platform later this year, promises to boost the availability and adoption of location-based services.  The two companies will present a demonstration of the new hybrid GPS/Wi-Fi location technology at the 3GSM World Congress 2007 being held February 12-15 in Barcelona, Spain.

The technology will be applied to special client software from SiRF for mobile handsets that synthesizes GPS and Wi-Fi measurements as well as to SiRF's SiRFLoc Server to enable it to establish precise positioning from these measurements.  As handset makers roll out a new generation of Wi-Fi-enabled mobile phones to enhance both data and voice communications, the SiRF-Skyhook hybrid technology will leverage this hardware ecosystem to provide greatly enhanced positioning availability and accuracy for location-based services.  Using this new technology, carriers can boost their revenues by offering enhanced location-based services that are easier to use, handset makers can better differentiate their products, and application developers can create exciting new services that work anywhere, even when GPS signals are not present. The system will benefit consumers by enabling them to more quickly and reliably perform tasks such as planning a trip, finding friends nearby or locating the closest ATM machine.

"Our strategy is to enhance consumer experience with location enabled content and services by combining multiple sensors and signals to provide accurate location information everywhere.  This is the first time a single positioning system has combined both GPS and Wi-Fi location data to get us a step closer to achieving 100 percent availability of accurate positioning,” said Kanwar Chadha, founder and vice president of marketing for SiRF.  "By complementing our industry leading GPS performance with Skyhook's Wi-Fi positioning in our Multimode Location Platform, SiRF is continuing to broaden its product line and pursue its mission to bring the benefits of location awareness to mainstream consumers.”

SiRF will be offering the new technology to mobile handset makers using SiRF SiRFstarIII GPS chip sets and to wireless carriers using its SiRFLoc Server, a carrier-class, standards-compliant, multimode Assisted-GPS location server that incorporates SiRF's patented multimode technology.  Any SiRF-based mobile handset with a Wi-Fi radio subsystem built in will be able to take advantage of this new technology by including the client software.

"This partnership creates an availability breakthrough for location-based services, offering handset makers and carriers a new hybrid GPS/Wi-Fi technology for anytime, anywhere location reliability,” said Ted Morgan, founder and CEO of Skyhook Wireless.  "Wi-Fi and GPS are ideal complementary technologies for mobile handsets, enabling a more comprehensive location solution and a more robust infrastructure for exciting new location-based applications.”

About Skyhook Wireless
Founded in 2003, Skyhook Wireless has pioneered the development of the first-ever metro-area positioning system that leverages Wi-Fi rather than satellites or cell towers to deliver precise location data supporting the growing market for location-based services.  The Skyhook Wi-Fi Positioning System (WPS) requires no new hardware, works indoors and outdoors, provides an instant location and is more accurate than current technologies in congested downtown areas.  WPS serves over 70% of the US population and is expanding internationally.  Skyhook Wireless is headquartered in Boston, MA, and is privately held.  Investors include Bain Capital and Intel Capital.  For more information visit www.skyhookwireless.com, send email to or call 617-314-9802.

About SiRF Technology Holdings, Inc.
SiRF Technology Holdings, Inc. develops and markets semiconductor and software products that are designed to enable location-awareness utilizing GPS and other location technologies, enhanced by wireless connectivity capabilities such as Bluetooth, for high-volume mobile consumer devices and commercial applications. SiRF's technology has been integrated into mobile consumer devices such as automobile navigation systems, mobile phones, PDAs, GPS-based peripherals and handheld GPS navigation devices, and into commercial applications such as location servers, asset tracking devices and fleet management systems. SiRF markets and sells its products in three target platforms: wireless handheld devices, such as mobile phones; automotive electronics systems, including navigation and telematics systems; and consumer and compute devices, including personal digital assistants, notebook computers, recreational GPS handhelds, mobile gaming machines, digital cameras and watches. Founded in 1995, SiRF is headquartered in San Jose, Calif., and has sales offices, design centers and research facilities around the world. The company trades on the Nasdaq Stock Exchange under the symbol SIRF. Additional information about SiRF and its location technology solutions can be found at www.sirf.com.