Quote:
Originally Posted by TheRealJobe
Telenav uses cellular triangulation as a solution to the locating of the user. This is not the same way that true GPS uses.
|
No it doesn't
None of you guys seem to know what a-gps really does. That stands for ASSISTED gps not some magic jdm supertimersignalmetere that can triangulate positions down to a few inches.
What happens with a-gps is the raw satelite data is sent TO the towers and to sprint where it is interepreted there, NOT at the handset or in the reciever like the gps devices you think of now how they interpret it.
That way they can get a lock almost instantly (much more computing power and already having a good idea where you're at cuts down on lock time).
Most, ok all new handsets have some sort of a-gps to use for e-911 and whatever other marketing gimics cell providers come up with
ONLY SOME however can support standalone mode, mogul touch and apache being some that can.
Unfortunately though sprint has done a good job keeping a veil over how the cdma modem/gps work inside our phones. Until someone with much more smarts than people here gets in there and tears apart the firmware and rewrites or discovers how they keep gps standalone disabled you're just going to have to use a bt gps.
Enabling gps in a mogul touch or apache is very very very much a possibilty its just no one has really looked into it seriously (i'm talking getting out the logic probes and knowledge of the code on the modem) and sprint sure as hell isn't going to hand over something they can charge money for
/edit: dont take my word for it here is wikipedia on agps
http://en.wikipedia.org/wiki/AGPS
agps can get a general idea where you are based on cell towers alone, not from triangulation but from a database that the cell providers have
OR it can take satelite signals and get an exact lock.
dont believe me go to a sprint store and pickup one of the new java enabled phones and play with telenav, that ish is great and it uses a-gps.