[Q] GPS with NO data connection - Fascinate Q&A, Help & Troubleshooting

I was traveling overseas where there was no CDMA service but I brought my Fascinate and had it on airplane mode. However, I could not lock a GPS signal for the entire trip, even when standing in the middle of an empty field. I read on the dev forum something about GPS and NTP. DO you need a network connection to GPS lock on the Fascinate? Was running superclean 2.9.2 at the time.

I use mine off net fairly frequently. Typically with BackCountry Navigator. What app were you using?

I was using MapDroyd but even GPS Status couldnt lock it.

Airplane mode shuts everything off except for the phone. So the GPS chip was turned off and that is why you couldn't get a lock while over there.

drnihili said:
I use mine off net fairly frequently. Typically with BackCountry Navigator. What app were you using?
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Slight hijack. . .
How do you like BackCountry Navigator? I am planning a trip out west this summer with the family and thought this may be nice to have. It is worth the $10?

Related

Can get GPS to lock always..but in Portland, Not!

I have the Verizon 6800 and I have tested radio 3.42.30 & 40 found no difference for my device. Both radios locks under 2min sometimes less than 1min. I use BAF tool which does the work for me just click & walk away...soon it will lock.
My company headquarters is in Beaverton, OR but I am staying in downtown Portland. Since I landed from the airport and driving around downtown Portland all day...no locks at all...
Back home is Memphis, TN and I can get locks throughout the state and since I border Arkansas & Mississippi and get locks there as well when I move around the tri-state area....
My goodness....if I had not visited Portland/Beaverton before, I would be very disappointed if I was depending on this device for navigation here...
Tall buildings obstructing the sats?
ilkhan said:
Tall buildings obstructing the sats?
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But my signal bars are all there and excellent while downtown...back home i do not have this issue downtown getting locks...
try and change gpsmode to =1.
i had the same issue in las vegas. once i changed to standalone mode (gpsmode=1) and restarted i got a lock - too bad it was the morning we left.
this was back in the dcd 2.x / radio 3.27 days but try it.
I heard that our mogul gps is lock to us region that won't work outside us and canada.
AstronusX said:
I heard that our mogul gps is lock to us region that won't work outside us and canada.
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Since when has oregon left the union?
I had the GPS working in Southern Mexico just fine
I noticed I can only get GPS locks from a moving car. This helped me immensly on my recent trip to New Jersey. Try using HTC GPS tool and running the clear memory command. Also try using this app to obtain a lock first, then load your map software after it establishes a lock.
Good luck!
Whats pretty common with most standalone GPS's and I'm sure also pertain to our phones, don't rely on just the GPS to sync by itself. It usually helps if you open your navigation software and search for the area that you are in, then the GPS has some idea of where you are and can have a better idea of what satellites to look for. With WLS and GoogleMaps, I can never get a sync until I search for my town and then enable GPS mode, it will sync eventually, still takes several minutes at times, but will sync. If I leave it in SF or Atlanta it may take hours and multiple reattempts and still no sync.
Just my experience with it.
BTC

GPS Fails in unusual manner

I was driving around today and had Google Navigation running. All of a sudden it couldn't find a satellite. For miles this continued happening. I have a GPS Test app and it said that the gps was on but no satellites in view. I was on a highway a few hundred feet to either side in a open elevated location. I've been through here before without issues.
I checked a map and Clearwire is now covering the area. I stopped at a store and got a gps signal Inside the store but not outside.
Anyone else experience anything like this?
Sent from my X10a using XDA Premium App
I had some problems with my GPS as well.. all worked after re-flashing and matching kernel + baseband...
Using the new pre rooted GB rom wont allow me to find any satellites at all:
http://forum.xda-developers.com/showpost.php?p=16130033&postcount=138
But I didn't flash GB- I'm still on 2.1, and my GPS works fine at my home which is not covered by the Clearwire LTE service. As for it not working in the GB, the baseband is specific for different regions and you probably need to change the build.prop file to use the proper timezone/time servers for the service.
It was totally strange as I wasn't anywhere where I shouldn't get GPS, it was working and then just stopped while I was on the highway. To not be able to find a single satellite when you have 360 degree of view of the sky, is indicative of something else going on like LTE service blocking the signals. Which has been reported in the national press. I was driving along the fringes of the coverage area.

GPS Lock Issues

Does anybody else have GPS locking issues? I'm having intermittent problems with my GPS. Sometimes it will lock almost instantly and be flawless
Other times though it will take up to a minute to lock. After it locks it will drop my location after a couple of minutes too.
Can't find the root cause of the issue. Restarts and toggle airplane mode won't fix it. It seemed to be working all the time when I first got the phone. I don't want to factory reset to see if it will fix it either.
Does GPS have anything whatsoever to do with a data connection? Is it in any way related to Verizon network issues of late? FYI I'm always on 4g. I'm noticing patterns of certain areas causing me problems more frequently.
If you are using assisted location then yes, if you lose data you will lose GPS.
AtLemacks said:
If you are using assisted location then yes, if you lose data you will lose GPS.
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Not true. I have used GPS status (on an inc), where I had ZERO service and it pinpointed my exact location perfectly (checked on a 1:24000 map using utm).
remmy5r said:
Not true. I have used GPS status (on an inc), where I had ZERO service and it pinpointed my exact location perfectly (checked on a 1:24000 map using utm).
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This phone and the Inc are 2 completely different devices and have different antenna's as well as how they connect to various networks including satellites. If he is using ASSISTED GPS, like I said, he is using the network, not satellite signal. If the network is down, guess what?
GPS has been great so far. GPS was great on my EVO but horrible on the EVO 3d. ....
Sent from my ADR6425LVW using XDA App
No problem with my GPS , locks in less than 10 seconds every time I use it.
Sent from my Galaxy Tab 10.1
AtLemacks said:
This phone and the Inc are 2 completely different devices and have different antenna's as well as how they connect to various networks including satellites. If he is using ASSISTED GPS, like I said, he is using the network, not satellite signal. If the network is down, guess what?
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Well I've checked it again, with a 1:24000 map and Google earth on a comp, against known coordinates, with WiFi off, and no service. It's accurate to a couple meters. This rezound is great GPS, if you are trying to use the network as GPS, you are pissing up a rope. use the built in satellite function for it.
Sent from my ADR6425LVW using XDA App
So far NO gps issues.
Sent from my HTC Rezound

got lost in the boonies last night, and my phone was useless, yay

So i got lost last night in the middle of no where down in south jersey, of all places. Wound up in an area without tmobile access and I was trying to find my way back home. Go to my trusty GOOGLE MAPS which has always worked above and beyond compared to my garmin or magellan GPS. Type in the address to get back home to plot the route, and wala! "No network connection available, try again later". What an absolutely amazing load of crap this is. I come to find out that google maps no longer supports offline use.... now im told that you can cache small areas of the map in your phone but what the hell good is that if i somehow find myself in an area i havent cached? Really google?
Has anyone come up with a viable alternative to google maps?
copilot offers offline maps.
Sent from my SGH-T989 using xda app-developers app
jason4962 said:
copilot offers offline maps.
Sent from my SGH-T989 using xda app-developers app
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It looks good but its only a 14 day free trial, then you have to buy it to get turn by turn navigation.
Spawne32 said:
So i got lost last night in the middle of no where down in south jersey, of all places. Wound up in an area without tmobile access and I was trying to find my way back home. Go to my trusty GOOGLE MAPS which has always worked above and beyond compared to my garmin or magellan GPS. Type in the address to get back home to plot the route, and wala! "No network connection available, try again later". What an absolutely amazing load of crap this is. I come to find out that google maps no longer supports offline use.... now im told that you can cache small areas of the map in your phone but what the hell good is that if i somehow find myself in an area i havent cached? Really google?
Has anyone come up with a viable alternative to google maps?
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You must've been in SOME boonie area. I know South Jersey at least has EDGE. Knowing from experience, I got lost in around the same area at night. My MyTouch 4G had a strong EDGE signal. Hopefully you don't go through that again. It sucks being lost, especially in a part that barely anyone travels to. Have you tried Mapquest?
DJ Scooby Doo said:
You must've been in SOME boonie area. I know South Jersey at least has EDGE. Knowing from experience, I got lost in around the same area at night. My MyTouch 4G had a strong EDGE signal. Hopefully you don't go through that again. It sucks being lost, especially in a part that barely anyone travels to. Have you tried Mapquest?
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lol i was lost in harrison twp, had to go 6 miles in the wrong direction before i found a signal, even with data roaming enabled i didnt get anything. I just downloaded mapfactor navigator, and im in the process of downloading 2 gigs worth of offline maps lol
I've been many areas in kansas and missouri and my phones useless. Actually at my house which tmobile said is a high coverage area its useless without wifi 100percent of the time
Sent from my LG-P769 using xda app-developers app
Spawne32 said:
So i got lost last night in the middle of no where down in south jersey, of all places. Wound up in an area without tmobile access and I was trying to find my way back home. Go to my trusty GOOGLE MAPS which has always worked above and beyond compared to my garmin or magellan GPS. Type in the address to get back home to plot the route, and wala! "No network connection available, try again later". What an absolutely amazing load of crap this is. I come to find out that google maps no longer supports offline use.... now im told that you can cache small areas of the map in your phone but what the hell good is that if i somehow find myself in an area i havent cached? Really google?
Has anyone come up with a viable alternative to google maps?
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If you don't have a data signal, GPS is useless. Google Maps doesn't have pre-stored maps. The only functional offline mode it has is with predetermined grids that you set up when you have a connection. Do you have a pre paid plan? Post paid plan could have been helpful here since it allows roaming and there could have been another network in the area. Either way a regular GPS or a plain old map still should probably be in your as a backup
Sent from my LG-P769 using XDA Premium 4 mobile app
psychoace said:
If you don't have a data signal, GPS is useless. Google Maps doesn't have pre-stored maps. The only functional offline mode it has is with predetermined grids that you set up when you have a connection. Do you have a pre paid plan? Post paid plan could have been helpful here since it allows roaming and there could have been another network in the area. Either way a regular GPS or a plain old map still should probably be in your as a backup
Sent from my LG-P769 using XDA Premium 4 mobile app
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Nah just a regular month to month plan.
i use gaia gps sometimes
Sygic is good. Look in PM...
Description- https://play.google.com/store/apps/details?id=com.sygic.aura
Sent from my P760 using Tapatalk 2

GPS is about a mile off always

What would cause the GPS to be off? Whenever I click on the map and it locates me, it puts me about a mile away from where I am. I have wifi off and using straight GPS from the phone. While at work it always puts me at the same spot so it's at least consistent but way off.
Is this from having an old or wrong radio flashed? Perhaps an older firmware? What would cause this?

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