Sel telefonil tundub ikka tavaline GPS vastuvõtja olemas olevat. Nii vist ei saagi olla, et GPS vastuvõtjat pole, on vaid A-GPS. A-GPS aitab GPS'il positsiooni kiiremini leida.
http://en.wikipedia.org/wiki/A-GPS Mul on tunne, et sinu katsetuste ajal pole telefon õiget GPS asukoha "locki" saanud lihtsalt. Androidi puhul peab GPS ikoon notification bar'il põlema, kui ta alles otsib GPS "locki" siis see ikoon vilgub.
"is a system that can under certain conditions improve the startup performance, or time-to-first-fix (TTFF), of a GPS satellite-based positioning system. It is used extensively with GPS-capable cellular phones.
Standalone GPS provides first position in approximately 30–40 seconds. A Standalone GPS system needs orbital information of the satellites to calculate the current position. The data rate of the satellite signal is only 50 bit/s, so downloading orbital information like ephemeris and almanac directly from satellites typically takes a long time, and if the satellite signals are lost during the acquisition of this information, it is discarded and the standalone system has to start from scratch. In AGPS, the Network Operator deploys an AGPS server. These AGPS servers download the orbital information from the satellite and store it in the database. An AGPS capable device can connect to these servers and download this information using Mobile Network radio bearers such as GSM, CDMA, WCDMA, LTE or even using other wireless radio bearers such as Wi-Fi. Usually the data rate of these bearers is high, hence downloading orbital information takes less time."
Google Maps näitab seda umbkaudset asukohta mobiilimastide asukohainfo ja signaalitugevuse abil. Seda oskasid telefonid juba ~5a tagasi (Minu vana Sony Ericsson i550 näiteks).
http://en.wikipedia.org/wiki/Mobile_phone_tracking