Yes. it support both models of GPS
A-GPS : Assisted GPS location get from Mobile network such as WiFi and cellular networks (2G,3G and Lte)
For more info
http://en.wikipedia.org/wiki/Assisted_GPS
GPS : direcly access GPS signals which emitted by GPS sat network
more info
http://en.wikipedia.org/wiki/Global_Positioning_System
and your device having high class of receiver and it's output is very accurate.