GPS Issue - Eee Pad Transformer Q&A, Help & Troubleshooting

Hey guys, my transformer doesn't seem to be finding a GPS signal via Maps.
Any tips?
Sent from my Epic Deuce!

go outside and try "gps status" or "gps test" and wait for a fix

Yea, I noticed that the TF GPS is REALLY slow.... I thought my phone had the slowest GPS but the TF proved that wrong.
I know I was able to modify my GPS.conf to speed it up on my phone, anyone know what file needs to be modified on the TF?

slow? i've got a cold fix without downloading gps data in 20-25 seconds :?

Mine takes well over a minute not matter if I'm outside or in. My phone was the same. After I made some changes to my gps.conf file it takes less then 10 seconds to lock now. Would want to implement the same setting on the TF now.

After going on a little road trip and nearly getting lost, I realized just how slow the GPS on the TF101 actually is. I could never get a GPS fix while inside a moving vehicle, when my HTC Desire was able to get one in a matter of seconds. As it was, I had to use OsmAnd on the Desire to find my way to where I needed to go, and had to suffer through the tiny screen on my phone which made it hard to pinpoint locations. Once I got to where I was going I tried to test the GPS on the Transformer again, and it took almost a minute to get a fix while I was stationary with a clear view of the sky. Pathetic.
I would have wanted to use the bigger screen to display the maps: it would have made navigation a lot easier. Now I'm wondering if there's a way to get my phone to relay GPS information to the Transformer, as its GPS is a lot more reliable, and have the Transformer display the maps based on the relayed GPS info. I've been looking around for apps that could conceivably do this but so far no luck.

maciek82 said:
Yea, I noticed that the TF GPS is REALLY slow.... I thought my phone had the slowest GPS but the TF proved that wrong.
I know I was able to modify my GPS.conf to speed it up on my phone, anyone know what file needs to be modified on the TF?
Click to expand...
Click to collapse
same file... /system/etc/gps.conf
I made my own gps.conf file... I get lock on average within 5 seconds.

a.mcdear said:
I made my own gps.conf file... I get lock on average within 5 seconds.
Click to expand...
Click to collapse
Would you mind sharing it?

Related

Any problems with the GPS on the captivate?

Hi Guys,
I've been hearing about lots of problems with the GPS not picking up low SNR satellites and the GPS being wildly inaccurate on the samsung vibrant and also the euro variants of the galaxy s.
Does the captivate have the same issue?
Its true. I bought it on sunday an notice that issue. Hope there will be a update(Bug fix) soon.
Compare to my G1, the Captivate take about the same time to lock and GPStest says the SNR is better. I'm happy with it.
MFister said:
Hi Guys,
I've been hearing about lots of problems with the GPS not picking up low SNR satellites and the GPS being wildly inaccurate on the samsung vibrant and also the euro variants of the galaxy s.
Does the captivate have the same issue?
Click to expand...
Click to collapse
Define Wildly inaccurate. On my Captivate it is dead on (within 9 feet)
I am having major problems with GPS. I am getting a lock but only within 50-75 feet. It isn't good at all. The GPS is slow to update and throws me everywhere.
I amthinking of returning the phone if Samsung doesn't make an announcement about s fix for this.
dial this from your phone:
*#*#1472365#*#*
Change startup from hot to cold.....worked for me. GPS locks much much faster
What are the settings on your phone Citznfish? My phone is off by anywhere from 100-500ft. Thanks!
Ok, I tried it again... In the house I'm about 500 ft off from where I really am and placed in a golf fairway. Outside I am FURTHER off: I'd estimate at least 5 blocks and placed in the middle of a different golf fairway. For comparision sake, my wife's iPhone 3Gs has her within 10-20' while inside the house. To me, this is unacceptable and a great cause for concern. What can I do???
Smalls2 said:
dial this from your phone:
*#*#1472365#*#*
Change startup from hot to cold.....worked for me. GPS locks much much faster
Click to expand...
Click to collapse
I'm having the same problem here. My iPhone 3GS GPS responded way quicker then this phone does. I have a Weather Channel widget up, and it doesn't find the location to display the weather for a good minute and a half after. Same goes for using Google Maps to find my location. Lot of times it says, "Your location is unavailable." I even tried switching the startup from hot to cold, and that didn't have much effect either.
When I was driving today, the GPS locator had a bad lag in it, I would be down two blocks before it would catch up, and I live in a 3G area, and not a giant city like NY or something.
I wonder if it's because it's so bloated with Samsung UI on it, or if it's just the a bug. Either way, if I'm still having issues with it, I'll see if AT&T will exchange it out for a different one. Otherwise back to the 3GS, which I really don't want to do since I'm loving Android right now.
What does hot start and cold start do?
skizzz said:
What does hot start and cold start do?
Click to expand...
Click to collapse
Hot Start - The GPS receiver remembers its last calculated position and which satellites were in view, the almanac used, and the UTC Time. It then performs a reset and attempts to acquire satellites and calculate a new position based upon the previous information.
Cold Start - The GPS receiver dumps all information and resets. It then attempts to locate satellites and then calculate a GPS lock. This takes the longest because there is no known information. The GPS receiver has to attempt to lock a satellite signal from all of the satellites, basically like polling, which takes a lot longer than knowing which satellites to look for.
Danm a cold start sounds like it would be slower. I tried it and I still can't get a lock within a reasonable range.
Sent from my SAMSUNG-SGH-I897 using XDA Appb
I've been reading online that the Galaxy S got a firmware update that greatly improved/fixed the GPS problems we are experiencing. I can only assume that we will have to wait as well for this firmware to completely fix the gps issue.
Try the fix/workaround in the Vibrant forum.
http://forum.xda-developers.com/showthread.php?t=728611
I went from seeing 1 satellite and none locked to 7-10 seen and 5-7 locked.
tbae2 said:
I've been reading online that the Galaxy S got a firmware update that greatly improved/fixed the GPS problems we are experiencing. I can only assume that we will have to wait as well for this firmware to completely fix the gps issue.
Click to expand...
Click to collapse
Where did you read this? I've been looking for something like this, preferably from Samsung.
i havent had too many problems with GPS here
Google maps usually locks me in a few seconds
Third party applications can take much longer, however
The problem might be the way the third party apps utilize the GPS
lyu370 said:
Try the fix/workaround in the Vibrant forum.
I went from seeing 1 satellite and none locked to 7-10 seen and 5-7 locked.
Click to expand...
Click to collapse
Actually that isn't a fix at all. It makes locking onto satellites much faster, but nothing to address the sensitivity issues, and there is definitely an issue. I 'found' 9 satellites, but could only lock onto two of them, for a few seconds at a time, then back to zero, out in the open.
Hopefully a software fix is on the way.
Source: /showthread.php?t=728611&page=5
This fix did help me so now i get a quick lock...as ling as i dint start moving around. It stays close enough to exact to use for driving around but not more accurate than that. The problem isn't really getting a lock so much as keeping it.
Sent from my SAMSUNG-SGH-I897 using XDA App
tdusen said:
Compare to my G1, the Captivate take about the same time to lock and GPStest says the SNR is better. I'm happy with it.
Click to expand...
Click to collapse
Well, I change my mind. While what I said still stands, I've since found that the GPS and the Compass don't track very well. I tried find a geocache using the same GeOrg software I use on my G1. The location seemed to be stuck as I was walking. From my experience with the Tilt, I'd say the GPS is running in "Static Navigation"
The clock is ticking, GPS has to be fixed in 28 days, or the phone gets returned.
lyu370 said:
Try the fix/workaround in the Vibrant forum.
http://forum.xda-developers.com/showthread.php?t=728611
I went from seeing 1 satellite and none locked to 7-10 seen and 5-7 locked.
Click to expand...
Click to collapse
I was having problems w/ GPS on my phone as well. Would be way off in Google Maps, Navigator took forever to lock, and geo-tagging photos was also way off. I did something similar - dialed the code to get to the GPS settings. However, all I did was turn Skyhook to ON and switched configuration from manual to auto. I don't seem to have any problems between yesterday and today. It locks incredibly quick and is very very accurate.
Some of you should try this method and see if it helps with anything. Good luck.

Nexus S GPS problem?

I bought a T-Mobile nexus s to try out at best buy before committing to dish out 600$ on the att version and noticing that my GPS is having a difficult time locking a signal. Could this be because I'm on edge signal or it shouldn't matter?
I had that captivate before and I had the same issue, does this problem also exist on the nexus s also? It's a great device but I don't think its worth it to me if the GPS isn't reliable
Sent from my Nexus S using XDA App
If the GPS is having trouble finding your location, then it's not your network's fault. It's your GPS's. Anyway, 2.3.4 should fix that, so just manual install 2.3.4 and you should be good to go.
i do note though, i have problems around areas densely populated with buildings and trees.
Not trying to be an ass, but do you even know how gps works? There's nothing to do with edge cellphone towers or anything... The phone receives signals from satellites that orbit earth and by comparing the time delay it takes to receive the signal from at least 3 different satellites it locks your location.
Now, because the signal is very weak you need to have a clear view of the sky. Buildings, trees, clouds, anything aside a blue clear sky can prevent your phone from getting a gps signal.
So every phone first use radio strength from cellphone towers to triangulate your position faster, but again it has nothing to do with 3g or edge stuff since it just compare the strength of radio signals from differents cellphone towers that have know locations.
So try out getting a gps fix in a clear day, if even in perfect conditions you don't get squat than replace the phone.
Sent from my Nexus S using XDA App
Well I was trying to use the gps on the express way with nothing but blue sits and I wasn't able to achieve a lock until half way to my destination. As much as I like the nexus s if I have to update my rom to get the gps to work then im thinking about returning it. Plus I bought the attic 4g and the gps works wonderfully!! And even though its not as open to run the latest roms I find it far smoother then the nexus s aside from the screen im really impressed with the phone.
gratti said:
Not trying to be an ass, but do you even know how gps works? ...anything aside a blue clear sky can prevent your phone from getting a gps signal.
Click to expand...
Click to collapse
Not trying to be an ass, but do you even know how gps works? it also works if the sky is black.
doug0365 said:
Well I was trying to use the gps on the express way with nothing but blue sits and I wasn't able to achieve a lock until half way to my destination. As much as I like the nexus s if I have to update my rom to get the gps to work then im thinking about returning it. Plus I bought the attic 4g and the gps works wonderfully!! And even though its not as open to run the latest roms I find it far smoother then the nexus s aside from the screen im really impressed with the phone.
Click to expand...
Click to collapse
I think the GPS lock time is decreased when you try to get it whilst moving. So if you were on express way, then that explains it. Just try to get a GPS lock in the park or standing still in an open environment. See if that helps.
MarkusPO said:
Not trying to be an ass, but do you even know how gps works? it also works if the sky is black.
Click to expand...
Click to collapse
You had to try hard to make that joke, eh?
There are 21 satellites up there sending signals at any giving moment, and yeah, that includes night time
Now back to topic, I don't think that you speed effect lock time since no matter how fast you are moving in your car it won't make a difference since area covered by a satellite is huge and the time stamp on those signals are in the order of 1x10^-6 seconds. And ofc a electro magnetic wave move practically at the speed of light.
There's always a visible delay when you are moving, like the position on the map is always a bit behind of where you really are, but that's because the phone only reflash your position each 2 to 4 seconds to save some battery.
Sent from my Nexus S using XDA App
Oh, ok gratti, thanks for the input. It was just a thought. So then what would be his problem ?
i'm gonna recommend you download gps status, go to the menu / tools / manage gps, and download the gps data - which is the location of the satellites. and this will help you get lock faster.
you're welcome.
lambda30 said:
Oh, ok gratti, thanks for the input. It was just a thought. So then what would be his problem ?
Click to expand...
Click to collapse
Well, hard to say. Most likely it's software related. He can try download "gps status" from market and use it's tool clear and redownload gps data. That seems to work most of the times... even tho I'm not sure it actually do something or if it's more like a placebo effect. If his phone can never get a location than better replace it and be done with it.
I had gps issues with all my phones at one point or another and most of the time it resolved by itself. One day it didn't worked the next worked like a charm.
As an electrical engineer it piss me off when my phone's gps simply can't locate me even with ideal conditions. It should work. Period. But like Lewis CK says "the ****tier cellphone is a god damn miracle" sooo...... yeah
Sent from my Nexus S using XDA App
Please, watch here : http://forum.frandroid.com/topic/52821-fix-gps-full-speed/
It's my topic (in french :/) but it's a fix full speed gps.
8/8 satelites in 15s !

[Q] GPS poll anyone?

Im seeing GPS complaints starting to crop up. My two day old Infuse does not get a GPS lock at all. Figured maybe we can start a poll and see what kind of leaning we get towards GPS performance on this device and show it to Samsung should it look like its a major problem.
i've had no issues at all with my GPS...
This is my third infuse. My first one had battery issues. Second woulndnt find a GPS in the vast sky. But this one is near perfection.
Sent from my SAMSUNG-SGH-I997 using XDA App
Infuse GPS - Location Difs?
I'm having a lot of trouble getting the Infuse to find the GPS. I keep getting messages that it's searching for the GPS. However, when it does find it, it works wonderfully. I live in Southern CA and having a difficult time here. It's not locating me correctly and is unable to provide navigation more than half the time. However, in Northern CA last week, it was working well. Do you think that the location makes a difference - or is it something with the individual phone?
Can't be I'm in sandy eggo. My second infuse didnt find any signal while my friend two feet away with an infuse had it working in two seconds.
Sent from my SAMSUNG-SGH-I997 using XDA App
dont try these side by side comparisons unless you clear nmea data on both devices before hand. it can be difficult for the gps chip to download the data from the satalites directly. another device may have downloded data that is still current at any time. side by side in only side by side if both devices have a cold start and are working in the same mode.
if you have trouble with initial locks go to the phone dialer and type *#*#3214789650#*#* it should take you to lbs test mode. it can also be launched with launcher pro activities. in lbs test mode delete gps data then go to supl/cp settings. write down the supl server and port. try a different supl server like supl.google.com with secure socket set to off and the port set to 7275. or you can set it to auto config. if none of that helps try setting the gps to msbased in application settings. msbased will use cell towers to download nmea data and give the gps chip a head start.
some phones (like my captivate) dont like ms based mode for tracking but my infuse works great with msbased and supl server set to auto config. if none of that helps trade in the phone, you have a defective unit.
there were situations where a factory reset helped on the captivate but mine suffered from a specific bug where the glgps daemon would crash with certain settings, wiping gps data did not solve the problem but a factory reset did. i dont think the infuse suffers from this bug but it couldnt hurt to try a factory reset.
Another GPS post. Fine, 7-8 gps locks no problem between 3 states. I guess if you can't beat them join them.
Sent from my SAMSUNG-SGH-I997 using XDA App
Second infuse, first had GPS issues
Even if it only works sometimes, it blows the doors off the Captivate.
MikeyMike01 said:
Even if it only works sometimes, it blows the doors off the Captivate.
Click to expand...
Click to collapse
I hope these are isolated incidents. I can't believe that Samsung would release another device with GPS issues.
After reading the OP's thread title, I was really hoping for something more exciting, haha
keitht said:
I hope these are isolated incidents. I can't believe that Samsung would release another device with GPS issues.
Click to expand...
Click to collapse
I think that it's likely there's some user issues. As in, "it doesn't lock on in the 3rd basement of my concrete and lead bunker, therefore it sucks".
MikeyMike01 said:
I think that it's likely there's some user issues. As in, "it doesn't lock on in the 3rd basement of my concrete and lead bunker, therefore it sucks".
Click to expand...
Click to collapse
Agree. And most people don't understand that the first seek time can take longer. So until the device learns your area it'll take longer to lock the first time in a certain area. I travel all over the world, and everywhere I go that I haven't been before a phone takes a bit longer to lock.
I think people forget about the days of the original GPS units that would take 5-7 minutes to lock on first use in a locale. Now if it takes 30 seconds they scream bloody murder.
EDIT: Why is it whenever there are polls like this people who click a negative, like something doesn't work or doesn't always work they almost never elaborate in comments? If I found this thread and had GPS issues, I'd vote, then elaborate on the problem to see if someone can help. My guess is you're spot on with user error.
My GPS was mediocre from day one. Today, did a factory reset, used tibu to restore all apps except maps, fresh install of maps from market. Had a lock in seconds. Will see what happens in the next week or two.
im not gonna say there arent bad units. and the settings could certainly be better, but i see these threads in every forum about every phone, and my friends complain about there phones. all i can say is that it get blown out of proportion.
i had a captivate and despite limited accuracy and agps that would hinder tracking it never steered me wrong after a few slight tweaks. every time i tried to follow someone elses mods it got worse. da_g's fix fixed the glgps deamon crashing while i was driving, though it only crashed if i used agps settings in the first place, so just changing the supl server and using the most recent modem.bin and setting secgps.conf to standalone to match lbs test mode was all it took to get a great tracking gps even on google maps.and it locked pretty good under cover.
the infuse is way more accurate getting <10meter locks quickly and showing the accuracy to the .01th of a meter rather than using multiples of 5 meters like the sgs. i can typically get 6 meter locks on the infuse sometimes less, with consistant altitude and 11 sats visable. if it gives you trouble i would blame google maps, it is clearly not a hardware issue. changing the lbs settings or secgps.conf may make it better but it is better to have a gps program that doesnt use data so before you complain replace maps with an application that has it's maps stored internally.
10 days in... Not one GPS issue. I just returned home from a 4 day business trip to Washington DC. During that trip, I used the Infuse often and enjoyed comparing it to the Garmin that came with the vehicle. The Infuse won hands down. The one huge triumph was the Google Navigation's ability to properly recognize traffic delays and re-route. I used it and it actually worked like a charm! The Garmin traffic portion didn't work at all. It basically didn't see the traffic that the Google Nav picked right up.
Dani897 said:
im not gonna say there arent bad units. and the settings could certainly be better, but i see these threads in every forum about every phone, and my friends complain about there phones. all i can say is that it get blown out of proportion.
i had a captivate and despite limited accuracy and agps that would hinder tracking it never steered me wrong after a few slight tweaks. every time i tried to follow someone elses mods it got worse. da_g's fix fixed the glgps deamon crashing while i was driving, though it only crashed if i used agps settings in the first place, so just changing the supl server and using the most recent modem.bin and setting secgps.conf to standalone to match lbs test mode was all it took to get a great tracking gps even on google maps.and it locked pretty good under cover.
the infuse is way more accurate getting <10meter locks quickly and showing the accuracy to the .01th of a meter rather than using multiples of 5 meters like the sgs. i can typically get 6 meter locks on the infuse sometimes less, with consistant altitude and 11 sats visable. if it gives you trouble i would blame google maps, it is clearly not a hardware issue. changing the lbs settings or secgps.conf may make it better but it is better to have a gps program that doesnt use data so before you complain replace maps with an application that has it's maps stored internally.
Click to expand...
Click to collapse
Could you post a link of changing the settings to lock in north America only please.
Sent from my SAMSUNG-SGH-I997 using XDA App
Working fine here, just hoping I'm not jinxing myself by saying so
I was using Google navigation yesterday on the Infuse while in Kissimmee and it moved a long with the car 95% of the time, it was great! Took me exactly where I needed to go without an issue. The Captivate couldn't do this at all!!
My GPS still doesn't work, indoors, outdoors, in my car etc. Guess ill need a replacement. Thanks for the input people. Thats what these forums are for. To either uncover or put to rest potential issues, amongst many other uses.. Sorry if i "offended" any internet elitists.. Again i appreciate the useful input though.

[Q] GPS issues is this normal?

I took a trip with the tf101 this weekend. Tethered to my phone got consistent wifi for email, but the only problem we noticed was that GPS was very difficult to get correct. I was in southern Illinois and it thought I was in map maps. So I rebooted and then I said I was in England. It seems to take a long time to sync to a GPS location regardless if it is correct or not. I downloaded an app called GPS status. On my atrix phone it syncs almost immediately. On the tf101, it will not sync even if I an outside with a clear sky. It takes a couple minutes if it does sync.odds this normal? My guess is that it has a marginal GPS antenna our mine is defective. Thoughts?
Keith
I've had exceptional reception on the GPS. Frankly, it the best GPS I've ever used. You may have a lemon or something screwed up.
Get "GPS Status" from the market. In addition to having a really cool display, it has the ablity to reset your AGPS data.
keithspg said:
I took a trip with the tf101 this weekend. Tethered to my phone got consistent wifi for email, but the only problem we noticed was that GPS was very difficult to get correct. I was in southern Illinois and it thought I was in map maps. So I rebooted and then I said I was in England. It seems to take a long time to sync to a GPS location regardless if it is correct or not. I downloaded an app called GPS status. On my atrix phone it syncs almost immediately. On the tf101, it will not sync even if I an outside with a clear sky. It takes a couple minutes if it does sync.odds this normal? My guess is that it has a marginal GPS antenna our mine is defective. Thoughts?
Keith
Click to expand...
Click to collapse
Your phone can use the cellular network to help fix it position. 3g tablets can do the same.
Your Wifi TF has no such aid and needs several minutes of clear sky to get the ephemeris. Once it has the ephemeris it will be quicker to get lock provide it is outside and it has not been more than a few days since the GPS last saw the sky and you have not moved too far since the GPS was last active.
Sent from my Transformer TF101
Go into settings then Location and security then under My Locations, uncheck Use wireless networks. If you have that checked, it will use the known location of the router ( in this case your phone) that is stored in an online database. In a fixed location ( ie home or office) this is usually correct. In a mobile location, this is almost always wrong as it is not a regularly updated parameter. With this unchecked, the location of the TF is determined by the TF GPS and not the stored location of the router( tethered phone) . For more information, see http://www.skyhookwireless.com/
dburckh said:
Get "GPS Status" from the market. In addition to having a really cool display, it has the ablity to reset your AGPS data.
Click to expand...
Click to collapse
This; launch GPS Status, go to settings and tap on Update AGPS. I always do this before I launch any navigation app on TF.
GwynBleidd said:
This; launch GPS Status, go to settings and tap on Update AGPS. I always do this before I launch any navigation app on TF.
Click to expand...
Click to collapse
There doesn't seem to be a "settings>update AGPS" setting.
I couldn't find anything like that.
Thanks for the posts. I will try these this evening. One thing I did note was that my Atrix has higher signal levels when running GPS Status than the TF101 as well as syncing faster. It also syncs much faster. I will attempt another test this evening with wifi turned off on both devices. I will put the phone in Airplane mode or pull the SIM card and reboot it to make it 'even'.
KeithG
keithspg said:
Thanks for the posts. I will try these this evening. One thing I did note was that my Atrix has higher signal levels when running GPS Status than the TF101 as well as syncing faster. It also syncs much faster. I will attempt another test this evening with wifi turned off on both devices. I will put the phone in Airplane mode or pull the SIM card and reboot it to make it 'even'.
KeithG
Click to expand...
Click to collapse
you dont need to turn wifi off just uncheck use router to set location
Well, it looks like it is pretty poor, at least as compared to my atrix. The atrix is sitting right next to me and is showing 7 of 7 sat / fix. It will get a fix in less than 30 seconds. On the tf,it is just spinning. I really don't like this. It should be decent. It was tough to try to use it to navigate because it kept losing sync. I posted a message to Asus as well. It may be sent back for repair. I have a B60 version, a I hope I don't lose the ability to root it.
Keith
Another response... If I load GPS Test, it shows the satellite number and each S/N ratio. On the Atrix sitting right next to it, there is a 20-40% increase in S/N on the Atrix compared to the TF. On the TF, they are all 15-25 and on the Atrix the same satellites are 22-40 (data from inside a building). If I were to guess, this appears to be an antenna problem more than anything software related. From the TF teardown pictures, the GPS antenna looks to be a very simple part and I wonder if it is optimized.
Older phones also had problems with GPS antennas (Nokia for example) so much so that there are hacks to increase its sensitivity by soldering a wire to it. I am wondering if we could appropriate an antenna for a phone and solder it in instead of the one already in the TF...
Still waiting for ASUS to respond to my query.
Keith
still nothing back from ASUS. This is a pic of the 2 devices side by side. I do not know if I am just noticing it now or not, but it is not very 'solid' of a lock ever with GPS. I recently turned off WiFi location, so it is now completely dependent on GPS and seldom knows where it is. Am I the only one with a weak GPS performance? Notice that my phone shows 0ft and the TF shows 45ft precision on location.
This is with the latest OTA update of 8.6.5.9.
Keith
keithspg said:
still nothing back from ASUS. This is a pic of the 2 devices side by side. I do not know if I am just noticing it now or not, but it is not very 'solid' of a lock ever with GPS. I recently turned off WiFi location, so it is now completely dependent on GPS and seldom knows where it is. Am I the only one with a weak GPS performance? Notice that my phone shows 0ft and the TF shows 45ft precision on location.
This is with the latest OTA update of 8.6.5.9.
Keith
Click to expand...
Click to collapse
I seem to have the same GPS issues as you do. The GPS reception is so weak that it is pretty much impossible to use Google Maps for navigation. I've tried it with and without the wireless option and it has made no difference. It takes about 15 minutes to get a lock with a view of the open sky, then 2 minutes later it is again searching for GPS. Yet GPS Status sees all the satellites quite quickly. When I did travel with it, it usually showed (on Google Maps) a GPS location hundreds of kilometers from where I was located in an area I had never been to. I had to give up trying to use it and use my phone instead.
I'll add to the list of problems when I once again send my tablet in on RMA (after a month without it, Asus repair broke it much worse than it was before I sent it).
Note that the percision number is a calculation done by an algorithm. Different algorithms result in different results but they are somewhat subjective. I do not believe any commercial gps will yield 0 error so it sounds like your phone is a little optomistic.
keithspg said:
still nothing back from ASUS. This is a pic of the 2 devices side by side. I do not know if I am just noticing it now or not, but it is not very 'solid' of a lock ever with GPS. I recently turned off WiFi location, so it is now completely dependent on GPS and seldom knows where it is. Am I the only one with a weak GPS performance? Notice that my phone shows 0ft and the TF shows 45ft precision on location.
This is with the latest OTA update of 8.6.5.9.
Keith
Click to expand...
Click to collapse
Try:
* Taking the third-party case off. No idea what the construction is, but it's conceivable it could contain materials that are shielding the tablet
* Performing the test outdoors with a clear view of the sky (as much of it as possible), and the devices a couple of feet apart, not sitting on top of each other
* Giving the tablet several minutes to download ephemeris data from the satellites before performing the test. Phones can pick up info from their cell towers that gives them a huge head start in determining a fix. Your tablet can't.
* Reenable the network detection. That's the next best thing to what your phone has, and it's not likely that you're going to see a single router with the same details (it looks at more than just the network SSID) in multiple locations. Unless you've intentionally set your routers that way, anyway.
AGPS is a red herring. There's no such thing as AGPS in the Transformer, and so there's nothing to "clear". The A stands for Assisted, and that's Assisted by the cell connectivity in a phone or connected tablet. The Transformer -- unless you have the 3G version -- doesn't have cell connectivity, so it doesn't (and can't) have AGPS either.
I get the same results with our without the case. It is leather over cardboard.
outdoors I get better numbers on both devices, but the TF is always lower in value than the atrix.
I have the wifi location turned off on both devices. (trying to make it a fair comparison.) Does the phone still use the cell tower data to get location even if I have "Use wireless data" turned off on the"location" setting on the phone.
As it is, my TF is useless for maps or navigation. I am curious as to what Asus will say. I have a feeling that the antenna is just not very good. I don't know if it is just mine our if it is on all of them.
Keith
keithspg said:
Does the phone still use the cell tower data to get location even if I have "Use wireless data" turned off on the"location" setting on the phone?
Click to expand...
Click to collapse
I would imagine so, yes. Wireless data isn't the same thing as AGPS data.
As it is, my TF is useless for maps or navigation. I am curious as to what Asus will say. I have a feeling that the antenna is just not very good. I don't know if it is just mine our if it is on all of them.
Click to expand...
Click to collapse
Mine is accurate enough to correctly show which corner of my two-bedroom house I'm standing in.
Just to give a reference, I'm 12 feet from the nearest windows and my Transformer locked on to 6/8 satelites in about 2 seconds. My Vibrant takes about 2-10 minutes to do the same with a clear line of sight. B50.
dburckh said:
Just to give a reference, I'm 12 feet from the nearest windows and my Transformer locked on to 6/8 satelites in about 2 seconds. My Vibrant takes about 2-10 minutes to do the same with a clear line of sight. B50.
Click to expand...
Click to collapse
If yours is more typical, it may be that I have a defective one. From the replies, it also seems that I an not alone. Mine is a B60 serial number if that is relevant.
What serial number is yours?
I really do like this tablet, but would like a functional GPS.
Keith
I took the plunge and popped it open. The WiFi and GPS share the same ultra simple antenna. I did a bit of google-ing on GPS antennas and it may be a decent idea to buy a GPS antenna, but I will try making a more appropriate antenna with a piece of wire, first.
Keith

Ingress and GPS lag/uncertainty

Has anyone experienced very bad Ingress performance while using this tablet?
On top of that, has anyone experienced incredibly bad GPS lag and/or position uncertainty? I've had times where it stops moving for a minute or more, even when I end up being a block or more away (in my small city, so no sky scrappers or any large buildings blocking the GPS signal either). It's getting to the point where Ingress is a lost hope for the tablet, which it wasn't when I was using my Nexus 7. It actually ran it much better than the TF700, surprisingly.
I've noticed the same problems in google maps and other various GPS programs as well.
Help?
No, I haven't noticed GPS issues. In fact I use my tab to navigate across Europe. Never had an issue. (other than the usual 'below ground or not enough satellites in range')
Then again I haven't tried Ingress. And I disabled Google Maps on day 1. It eats battery even when asleep! Also, that thing won't even work properly on a PC these days, my SGS3 can't find my position at all (let alone load the map itself) and frankly there are much better navigation apps available. (I highly reccomend NavFree.)
Are you sure it's not just a lack of signal strength?
ShadowLea said:
No, I haven't noticed GPS issues. In fact I use my tab to navigate across Europe. Never had an issue. (other than the usual 'below ground or not enough satellites in range')
Then again I haven't tried Ingress. And I disabled Google Maps on day 1. It eats battery even when asleep! Also, that thing won't even work properly on a PC these days, my SGS3 can't find my position at all (let alone load the map itself) and frankly there are much better navigation apps available. (I highly reccomend NavFree.)
Are you sure it's not just a lack of signal strength?
Click to expand...
Click to collapse
It could very well be a lack of signal strength, but how would I even begin to know that? There's not really an indication in any application what the signal strength is for the GPS.
try gps test plus app
Sent from my LG-E610 using xda premium
TF700 and GPS
darkhawkff said:
Has anyone experienced very bad Ingress performance while using this tablet?
On top of that, has anyone experienced incredibly bad GPS lag and/or position uncertainty? I've had times where it stops moving for a minute or more, even when I end up being a block or more away (in my small city, so no sky scrappers or any large buildings blocking the GPS signal either). It's getting to the point where Ingress is a lost hope for the tablet, which it wasn't when I was using my Nexus 7. It actually ran it much better than the TF700, surprisingly.
I've noticed the same problems in google maps and other various GPS programs as well.
Help?
Click to expand...
Click to collapse
I am having trouble with the GPS in the TF700. This morning it spent the whole time I was driving around (even tried tethering it to the iPhone) searching for a route.
It seems to me that it was sharper before this latest CleanRom update (CROMI-X 4.6.4 - 10.6.1.15.3/US DEODEXED).
Anyone have some insight? #GPS
Alexcwb said:
I am having trouble with the GPS in the TF700. This morning it spent the whole time I was driving around (even tried tethering it to the iPhone) searching for a route.
It seems to me that it was sharper before this latest CleanRom update (CROMI-X 4.6.4 - 10.6.1.15.3/US DEODEXED).
Anyone have some insight? #GPS
Click to expand...
Click to collapse
Why the hashtag? This isn't Twitter.
It has recently been taking ever longer to find my location. Used to be it could do it in about a minute, now it takes almost 30. I didn't change a thing on my system, not even an update.
There has been an increase in solar activity and geomagnetic interference over the last few months.
Phones and 3G enabled tablets do not have this issue, because the Internet signal is already tracking your position, making it easier to triangulate. (Try turning off 3G on your phone, it'll take equally long.)
Thanks - Understood
ShadowLea said:
Why the hashtag? This isn't Twitter.
It has recently been taking ever longer to find my location. Used to be it could do it in about a minute, now it takes almost 30. I didn't change a thing on my system, not even an update.
There has been an increase in solar activity and geomagnetic interference over the last few months.
Phones and 3G enabled tablets do not have this issue, because the Internet signal is already tracking your position, making it easier to triangulate. (Try turning off 3G on your phone, it'll take equally long.)
Click to expand...
Click to collapse
HASHTAG from copy G+
Thanks for help.
Honestly, I gave up on it.
MY TF700 isn't really good for Ingress anyway. There's way too much lag involved, and for whatever reason every now and then the GPS just seems to stop functioning. I don't really know why, it just stops at one location for about 2 or 3 minutes. I won't even bother getting into how inaccurate it is.
And just to note, this was before the increase in solar activity.....the solar activity just makes it even worse now.

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