In general, GPS usually does not work in a house or other enclosed place. You have to have line of sight to get accurate GPS results.
The thing I noticed is that the Captivate is not a highly sensitive GPS. I have been using mine to find geocaches and such and as we are locating caches, the accuracy will show you that you are accurate within 5 meters or less which isn't too bad. Then, you go under some tree cover and it will drop to 98 meters (not too good) then it may drop to 1+ km off. I think this is the big issue with the gps. It's probably not software, but hardware.
D
I tried the method above and stood outside in the open and had no luck. I did a master reset and when I got home I turned skyhook on a worked right away. I even tried turning skyhook on before I tried this method and it worked. Now it works indoors and outdoors, but Im not sure about accuracy yet.In general, GPS usually does not work in a house or other enclosed place. You have to have line of sight to get accurate GPS results.
The thing I noticed is that the Captivate is not a highly sensitive GPS. I have been using mine to find geocaches and such and as we are locating caches, the accuracy will show you that you are accurate within 5 meters or less which isn't too bad. Then, you go under some tree cover and it will drop to 98 meters (not too good) then it may drop to 1+ km off. I think this is the big issue with the gps. It's probably not software, but hardware.
D
HI, I have attempted every fix as reported. The fixes helped some. Ultimately I returned the first phone for a replacement. The replacement was much better and locked relatively quickly. The problem is that while driving, the error range in Maps fluctuates a lot, enough so that while driving the phone repeatedly gives incorrect driving directions. I already have a Garmin that works well, but it's maps are somewhat in accurate.
Samsung/At&t please fix this problem. I love the phone, but as a GPS it is a failure and is dangerous to use as a navigation aid.
Does anyone else see it jumping from 5,10 meter accuracy to 100 m on a regular basis? Also at times it seems that LbsTestMode - Get Position Test might be better at holding a lock than GpsTest of Google Maps. Anyone else seen this behavior? THANKS
HI, I have attempted every fix as reported. The fixes helped some. Ultimately I returned the first phone for a replacement. The replacement was much better and locked relatively quickly. The problem is that while driving, the error range in Maps fluctuates a lot, enough so that while driving the phone repeatedly gives incorrect driving directions. I already have a Garmin that works well, but it's maps are somewhat in accurate.
Samsung/At&t please fix this problem. I love the phone, but as a GPS it is a failure and is dangerous to use as a navigation aid.
Does anyone else see it jumping from 5,10 meter accuracy to 100 m on a regular basis? Also at times it seems that LbsTestMode - Get Position Test might be better at holding a lock than GpsTest of Google Maps. Anyone else seen this behavior? THANKS
It shouldn't work. What you set your SUPL server to does not affect actual GPS, which works in accordance with the actual satellites. SUPL/A-GPS works off of cell towers and will only give you an approximate location. Depending on where you are, it could be anywhere between 1-3 mile radius, which is obviously isn't very accurate.
SUPL is a plane info database that uses wireless triangulation for ASSISTING normal GPS function. SUPL has nothing to do with satellites. When your NORMAL GPS (satellite based) works fine, it finds your location quickly without SUPL. To find sat based location you lock on at least 3-4 sats, and each of the sats broadcasts ITS OWN geo position. Once the phone has that info from 3-4 sats, it can triangulate its own lat/long position and elevation. It does not need SUPL for this. What SUPL is used for in the phones is obtaining QUICKER lock by triangulating on wireless signals. So when you fire up Google Maps you would first get your position within 100-1000 meters from SUPL or Skyhook and then by the time you realize it is not precise enough, regular GPS already obtains its own lock and the phone shows your more exact position within 10 meters.My understanding is that SUPL offers a database that the phone can use to compute its location by helping translate the information from the satellites.
Guys, I have to bed again, please before you claim you "fixed" your GPS, switch off wireless position assist in settings and only then see how many sats you lock on, and with what precision.
Was not trying to sound rude, I apologize.I already reported that a few posts ago. Here's some more detailed readings I'm getting right now (both SkyHook and Use Wireless Networks are turned off):
TTFF/TTF: 6 seconds
Accuracy: 5.0 meters
Number of Satellites: 8
Now, usually I have around that many satellites anyway, but it won't lock on a position, and none of them have asterisks after them.
Guys,
Determining the current position of the GPS receiver is based on the distances of the receiver from the GPS satellites it's locked on to. Based on how far your phone is from at least 4 satellites, it figures out it's current location in 3 dimensions.
This is why having SUPL or A-GPS will not give you a completely accurate position, unless you are standing very close to the cell towers.
So the phone's GPS receiver can determine how far the phone is from various satellites, but then the phone needs a way to determine where those satellites are in order to turn the distances into a location on Earth. This is where SUPL comes it, it offers a redundant database of the positions of GPS satellites in orbit.
I guess other GPS devices either have this information stored in them or somehow get the information from the satellites themselves. Perhaps the problem is that the Captivate, for whatever reason, needs SUPL to determine where the satellites are, and the SUPL system on the phone is fussy. Hopefully the update will make it so the phone can determine its location even when it is not in range of any wireless network.
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