GPS is stuck with a set of satellites - how to remove them from memory?

[ckl_88]

Originally Posted by tichi

Hey ckl_88, I just tried to experiment with GoogleMaps
it does put you in the (0.0, 0,0) - Guinea Bay - position even with the new radio
(I have the one 3.42.30 or something)..

in order to see it, you shoud enable internet, so that GoogleMaps can download, and also I switched on Satellite View instead of just MAP..

so it seems that there's no difference betweedn new and old radio
wrt this...

P.S.
if it is not too difficult, will you please try a test of Google Maps with the old radio,
in your spare time -
right after SOFT-resetting phone, and resetting google maps (menu, options, reset), and when sats are NOT available,
but internet IS - to osee if it still puts you in the middle of the ocean - (thsi way I think the last known location will be cleared
even wi the older radio).. thnx a lot in advance, I'd like to se if it is indeed useful to downgrade the radio!

Just so you know, my internet is always on because I'm connected via Windows Live push email.

Oh, the other thing is with the old radio (the one I'm using now) it puts me close to my workplace whereas the new radio would put me who knows where.

Okay, so soft reset - done.
Internet On - Yep.
Reset Google Maps - done. Quits the program automatically.
Restart Google Maps. Accept agreement - map of San Fran is displayed.
Clicked Use GPS. Blue status of Seeking GPS Sats (0) is displayed.
wait... here it comes... YES!

puts me about 1km away from where I am (at work). NOT in the middle of the ocean.

So there is a difference between the old and new radio. With the old, it's close to your actual position. With the new, it puts you in the ocean.

But even so, it still takes > 1 minute to get a lock because we don't have any kind of assistance server from Bell to get the ephemeris data to speed up lock times.

EDIT> Strange. While I got the blue dot that's close to my work place, I walked over to the other side of my office, and the blue dot moved to a different location. Now it's about 4km from my actual position.... a different cell tower perhaps.

[tichi]

Originally Posted by ckl_88

Just so you know, my internet is always on because I'm connected via Windows Live push email.

Oh, the other thing is with the old radio (the one I'm using now) it puts me close to my workplace whereas the new radio would put me who knows where.

Okay, so soft reset - done.
Internet On - Yep.
Reset Google Maps - done. Quits the program automatically.
Restart Google Maps. Accept agreement - map of San Fran is displayed.
Clicked Use GPS. Blue status of Seeking GPS Sats (0) is displayed.
wait... here it comes... YES!

puts me about 1km away from where I am (at work). NOT in the middle of the ocean.

So there is a difference between the old and new radio. With the old, it's close to your actual position. With the new, it puts you in the ocean.

But even so, it still takes > 1 minute to get a lock because we don't have any kind of assistance server from Bell to get the ephemeris data to speed up lock times.

EDIT> Strange. While I got the blue dot that's close to my work place, I walked over to the other side of my office, and the blue dot moved to a different location. Now it's about 4km from my actual position.... a different cell tower perhaps.

Thanks a lot!

I just tried to experiment too with the google maps ,
in the same way again (GPS screened, internet /wireless available) and ...
o, surprise, now it locates me too - not precisely, GPS satellites (0), but roughly, to the nearest cell tower (top of a high-rise bulding about 3 km away from my home).

and I.m using the NEW 2.32.40 radio !!

This time I did reset google maps to show me San Francisko first, but
I did NOT soft-reset the phone (an it had many fast locks today )
however, after I do soft-reset the phone, it puts me again in the Guinea Bay

So I guess it is:

- AGPS ("Location service") at work???

(maybe not in the part of that Belgian server, though..
but it has to use SOME AGPS server..
this means that Bell does HAVE one.. hmmm..
how to find out the IP.. the trouble is that
the phone probably does not communicate with it directly, otherwise one could try to use netstat to figure out which one .. or it does?)

- AGPS needs a good guess of the last-known position (which is (0.0,0.0) after a soft-reset - at least in the NEW radio - that is why Guinea Bay shows)

[tichi]

BTW, a G. , a friend of mine, did bring me that QPST, but I`m stumbled
upon a stupid thing - - how to connect the phone?

via USB cable activesync?

QPST does not see it, but wants some serial connection instead..

any help much appreciated..

[arianhojat]

wasnt the HTC GPS Tool, have a Clear Memory option, that i heard people run when they goto a new Location or just want to clear satelittes from gps chip so can get faster locks when sat data old/new location.

doesnt help me though. Verizon GPS sucks. sometimes works. sometimes takes forever if i leave the phone by the window. never works when i want it to downtown hehe.
heard running EPST helps other non vz peeps

[divxrippimp]

I have this same issue, usually it will work perfect for a day (after a fresh install/hard reset) then the next day i have issues ALLLLLLLLLLLLLLLLLLLLL day, its super annoying. I dont have this issue with my external gps... Im gonna try some stuff i read in here and see if it helps...

[ckl_88]

Originally Posted by tichi

Thanks a lot!

I just tried to experiment too with the google maps ,
in the same way again (GPS screened, internet /wireless available) and ...
o, surprise, now it locates me too - not precisely, GPS satellites (0), but roughly, to the nearest cell tower (top of a high-rise bulding about 3 km away from my home).

and I.m using the NEW 2.32.40 radio !!

This time I did reset google maps to show me San Francisko first, but
I did NOT soft-reset the phone (an it had many fast locks today )
however, after I do soft-reset the phone, it puts me again in the Guinea Bay

So I guess it is:

- AGPS ("Location service") at work???

(maybe not in the part of that Belgian server, though..
but it has to use SOME AGPS server..
this means that Bell does HAVE one.. hmmm..
how to find out the IP.. the trouble is that
the phone probably does not communicate with it directly, otherwise one could try to use netstat to figure out which one .. or it does?)

- AGPS needs a good guess of the last-known position (which is (0.0,0.0) after a soft-reset - at least in the NEW radio - that is why Guinea Bay shows)

What custom ROM are you using right now?

Thanks.

[ckl_88]

Originally Posted by tichi

BTW, a G. , a friend of mine, did bring me that QPST, but I`m stumbled
upon a stupid thing - - how to connect the phone?

via USB cable activesync?

QPST does not see it, but wants some serial connection instead..

any help much appreciated..

You gotta be careful with this QPST thing. If you screw up, your phone is broke and you will most likely need to get it reprogrammed.

I sent you a PM.

[tichi]

Originally Posted by ckl_88

What custom ROM are you using right now?

Thanks.

NFSFAN's 1.10 ...

but you know ... this little behavior of Google Maps locking you
at the nearest cell tower when sats are not available (yet)
may not be directly related to GPS.
I guess even a phone withOUT GPS can detemine what cell tower is closest, cannot it?

the apparently related to GPS part of this is that if the last known GPS location is = to ZERO (as after soft-reset with NEW radio), the Google maps gets confused, and does not even try the cell towers..

[tichi]

Originally Posted by ckl_88

You gotta be careful with this QPST thing. If you screw up, your phone is broke and you will most likely need to get it reprogrammed.

I sent you a PM.

O thanks a lot.. I did not even realize that I have this PM boxx.

[ckl_88]

Originally Posted by tichi

NFSFAN's 1.10 ...

but you know ... this little behavior of Google Maps locking you
at the nearest cell tower when sats are not available (yet)
may not be directly related to GPS.
I guess even a phone withOUT GPS can detemine what cell tower is closest, cannot it?

the apparently related to GPS part of this is that if the last known GPS location is = to ZERO (as after soft-reset with NEW radio), the Google maps gets confused, and does not even try the cell towers..

Yes, but having it figure out your location to the closest cell tower is better
than in the middle of the ocean off the coast of africa LOL!

Even so, sometimes I need to use Google Maps and get an approx location of my position right away because I don't time to wait 1-1.5 minutes for the GPS to get a real lock. Especially indoors when a real lock may take about 10 minutes. That's what I'm after. Having it pinpoint me in the middle of the ocean doesn't really help much.