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I've just got the Vario III new from T-Mobile UK, and I just can't the GPS get to receive any signals. I guess there is no "in box" way of testing the GPS, so I downloaded MS Live Search, and in there the "Centre on GPS". Previously, I set the hardware to COM0, 4800 Baud, autostart GPS by appilcation. In Live Search, I equally set it to COM0.
When is press the "centra on GPS", the righ hand side orange LED starts blinking, and the message inside Live Search is something like "retrieving GPS datat", but that's it. Nothing more happens.
I've also tried it with TomTom, but no result here either, other than the message "invalid GPS data".
I've called T-Mobile support to find out if there's anything on their side that needs doing, but apparently not.
So, I'm pretty stuck. Does anyone have an idea what I could try? Thanks!
First off, never ever go into the External GPS settings in the control panel. The general consensus around here is that it almost always requires a hard reset after messing with that. If you did, make sure it's set to COM4, 4800 baud.
Make sure your apps are set to COM4, 4800 baud. If that fails, a hard reset may be in order.
Why did you set it to COM0? Did someone tell you to do that?
I set it to to COM0 just to try SOMETHING.
I guess a hard reset is in order
So I just leave the GPS settings be and don't even touch them, yes?
Ok, so I've just done a hard reset.
The one and only thing I've done is install Live Search.
In the prefs of it, COM4 was automatically selected.
Hit "centre on GPS", with absolutely no reaction other than "Getting GPS position".
Any further thoughts? Hardware fault? Software issue?
The signal from GPS satellites is very low powered. ANY obstructions to the sky can cause a failure. My handheld Garmin GPSs and my Tilt will not get a lock in the house. Outside; buildings, trees, land masses and clouds all prevent a good lock. From my experiences with the Tilt, I have to get out into the open and wait 5-10 minutes or more for a lock.
Download the new google mobile maps and try that. It seems to get a fix quickly and doesnt time out as quickly as the older version (and some other gps enabled apps).
Cool, I got it to work. I left the device outside on the balcony for 10 minutes, and Live Search did lock in on me.
I now downloaded Google Mobile Maps, but couldn't locate a GPS function (I downloaded it from their website). Am I blind?
The thing that worked for me was to install GPS Viewer (freeware, you can Google it) and then open GPS from there. It takes about a minute to connect but then it stays on and interfaces with Tomtom very well. Prior to running it, please also download and run QuickGPS (it comes as loaded software with Kaiser, you may have to download it also as freeware, helps keep the connection steady; it is advised to download QuickGPS once a week, this is as long as its effect lasts, don't know why). The combination of QuickGPS and GPSViewer works very well.
naujoks said:
I now downloaded Google Mobile Maps, but couldn't locate a GPS function (I downloaded it from their website). Am I blind?
Click to expand...
Click to collapse
Menu | Track Location
Hmm no, I dont have that menu item. Maybe I got an older version of it after all?
It's "Menu | Show My Location" on mine.
BTW, I saw a trick on another thread which worked very well for me. Enable the GPS Photo option (by using Kaiser Tweak or tweaking the registry) and open that first. It seems to get a fix very quickly. Once it's got one, you can close it and open any other GPS program like google maps and it tracks instantly. I also have QuickGPS installed and updated so that probably helps too.
After hard resetting twice, I have never run the QuickGPS program and I get a fix every time in less than a minute, even inside my house (by a window).
One program I highly recommend never using until it is updated is Map4PDA. It killed my GPS, requiring a hard reset.
Download GPS Test, run and confirm signal strength by satellite. That should solve your issue or at least answer the question of functionality.
Hello,
I bought a brand new 'HTC - Kaiser' (precisely a 'HTC - TyTN II' directly from Orange in France), in order to replace my old 'HTC - Hermes'.
First, I was surprised not to see a GPS option in the 'Communication Manager'. As you can switch ON/OFF wifi or bluetooth, you should be able to switch ON/OFF the GPS, isn't it ?
Secondly, I installed Tomtom v6.032 on my PPC, but I could not get any signal at all. I went in the options, and tried with all GPS option devices, with no success.
With 'Built-in GPS receiver' and 'Other NMEA GPS receiver' options, I always have "No valid GPS signal !". Do I have to start GPS somewhere on my PPC before starting TomTom ?
Thirdly, I looked for help on xda-developers.com here: http://forum.xda-developers.com/showpost.php?p=1735972&postcount=112
I followed his recommendations, I changed:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\GPS Intermediate Driver\Drivers\GPSOnePort]
"CommPort"="COM1:" (instead of: "COM0:")
[HKEY_LOCAL_MACHINE\System\CurrentControlSet\GPS Intermediate Driver\Multiplexer]
"DriverInterface"="COM0:" (instead of "COM4:"
And it after this I could have some signal. But then after shutting down Tomtom and reopen or after a soft reset, it does not work any more, at all ! What happens ? I don't understand.
Why my GPS just not work out of the box ?
Please help ! I switch to the Kaiser for the GPS feature, and it does not work :'(
I tried all my test outside with a clear weather, waiting for about 3 minutes each time.
it should work right out of the box.
for me (i have a tilt) gps is on com4. i use tomtom and you have to make sure the correct com port.
I could be wrong but I believe that in tomtom if you get the message "no valid GPS signal" that actually means every thing is set up correctly. you just need to wait, could take some time. tomtom starts the gps itself. watch the leds on the phone. when GPS is on the right LED will flash.
you may want to check out some other programs. tomtom does seem to take a little longer to get a fix in my opinion.
BTW check out my signature, you can use navizon and make some money once you get that gps working
There's no seperate GPS connection. The GPS just uses your data connection. If you can connect to 3G, then your GPS will also work. Try using Google Maps and clicking "Use GPS", leave your phone in one spot for a few minutes and see if you can get some sattelites that way.
As always, someome smarter can correct me if I'm wrong, but this is from my experience.
There is no way to "turn on" gps, programs access it when they need it, and it's off when they don't
Your first fix can take up to 45 minutes, although min eonly took about 5.
If you look in the extracted HTC cabs threads, you can find a program called "HTC GPS tool" Run this and select "clear memory" as the option, and that'll get a fix after a while. after that, After soft resets you should use "cold start", I think...
After this has fgot a fix you can use other programs on the COM4 channel.
Hope this helps
I have had my Tilt for about 2 months. Recently, I took a trip from L.A. to N.Y.C. As soon as I got to NYC, I ran QuickGPS, but was entirely unable to get GPS to work at all during the week I was there (queens, manhattan, roads, etc).
I posted an inquiry about backing up and hard resets. Rather than getting an answer to the question, I was given direction to make sure my GPS really didn't work.
That chain pushed me to GPS Test v1.04 by Chartcross. It is free, and can found on the web and on this forum. In NY I could not get a signal no matter what even running it.
When I landed in LA I ran it again ... it stayed at "Starting Up" for a while, but then miraculously started showing bars.
So --- I recommend that you (1) run Quick GPS, (2) install this program, and (3) let it run and run and run. Also make sure you are in an area where GPS is accessible.
It can take a very long time to get GPS to work on the tilt. Many times, it takes longer to find a signal than the trip you were hoping to TomTom through. Its the nature of the beast.
chris247 said:
I tried all my test outside with a clear weather, waiting for about 3 minutes each time.
Click to expand...
Click to collapse
Yep, like all the others have said leave it fore longer. 3 mins isn't enough time. If after 30-45mins of being left in one place (no moving it around!) with a clear view of the sky for the first time and TomTom is still saying "No valid GPS signal" then start worrying...
Thank for your enthusiasm. I carefully read your post, here is want I discovered:
You mentionned about having a 3G data connection. First I was wondering why do you talked about that: this as nothing to do with GPS. Then I thought I should give it a try. Up to now, I haven't yet put my SIM card in my brand new 'HTC - Kaiser'. I didn't mention it in my 1st post, as I though it could not have a link with my GPS problem. I put the SIM card in the phone, then started Tomtom, I was surprised to see that a 3G data connection was automatically started, and a few seconds later, the GPS worked perfectly.
I can't believe it, I could not have the GPS working because there was no SIM card in my phone !
First I thought that the data connection was for retrieving Tomtom traffic info online, but then I discoved that even with 'HTC - GPS Tool v1.1.1.0', a 3G data connection is started prior to getting my localization.
I read about QuickGPS, and learnt that it is the thing that causes the 3G data connection to start prior to getting my localization.
Why is QuickGPS starting automatically ? Is QuickGPS compulsory for localization ? Can I stop this behavior and have everything running through GPS ?
Chris
MAYBE IF YOU TR THIS ONE
I HAD THE SAME PROBLEM AND IT WORKED FOR ME
JUST ASSIGN THE INCOMING PORT TO COM4, AND OUTGOING VIRTUAL COM5
http://www.plunder.com/GPSGate-download-37727.htm
GPS and 3G have nothing to do with each other. They are too completely different things.
GPS does not need 3G to function!
Some GPS programs (like google maps), do require a internet connection to download data, thats when 3G comes in (not necessary, could use wifi and gprs instead).
What is strange is that in Orange ROM (at least in France), a GPRS connection is made automatically each time you want to use your GPS. If the GPRS connection is NOT successful, you can not use the GPS (with tomtom, or any other testing GPS tool). How can I change this behavior ? I do not have an unlimited GPRS subscription !
chris247 said:
What is strange is that in Orange ROM (at least in France), a GPRS connection is made automatically each time you want to use your GPS. If the GPRS connection is NOT successful, you can not use the GPS (with tomtom, or any other testing GPS tool). How can I change this behavior ? I do not have an unlimited GPRS subscription !
Click to expand...
Click to collapse
It's required GPRS connection because you might have selected tomtom plus services such as Traffic, Weather. Just to be sure, take out your SIM or turn off the radio to see what happen. BTW, flash a different ROM is another choice.
Did you installed Google Navigator as my Kaisers GPS unit stopped to work after i installed GN?
On Orange ROM (in France), everytime you want to get GPS, you first have to connect to the Internet. It is not link with TomTom Plus, because even with HTC GPS tool software, you need to let the phone automatically connect to the Orange network prior to getting your location with the GPS. If you do NOT have a SIM card and the possibility to connect online with your phone, you get NO GPS location.
Please, help
chris247 said:
On Orange ROM (in France), everytime you want to get GPS, you first have to connect to the Internet. It is not link with TomTom Plus, because even with HTC GPS tool software, you need to let the phone automatically connect to the Orange network prior to getting your location with the GPS. If you do NOT have a SIM card and the possibility to connect online with your phone, you get NO GPS location.
Please, help
Click to expand...
Click to collapse
As NGHIEM said above, flash a new ROM and this behaviour will stop. Try Duttys or Schaps for best stability etc.
I am using an AT&T Tilt with Garmin Mobile XT and there is an option to turn off Internet Data (Traffic, weather, etc.) in Garmin. If I want to use the GPS with no radios on I have to disable the Internet Data option otherwise the program tries to make that connection first and never acquires a fix. That may be part of your problem. I also just tried the HTC GPS Tool with no SIM card in flight mode and it got a fix in under 2 minutes inside my house by a window. Garmin also started fine. The GPS is an independent receiver and should require no other data. It appears that some other program is starting along with the GPS and trying to access the Internet. Like others have said before you can probably solve your problem by flashing a new rom.
I think I have found the solution:
- In the registry change:
[HKEY_LOCAL_MACHINE\Software\HTC\SUPL AGPS]
"EnableAGPS"=0 (instead of: 1)
Now everytime I use my GPS (with HTC GPS Tool, or Tomtom), the automatic GPRS connection is not started !
Please give your feedback about this.
Que_EN_Unlock_All_.zip file
Hi,
I am looking for this file to do the Garmin mobile XT installation. This file, Que_EN_Unlock_All_.zip, is not available at rapidshare.
Can you help please?
Regards.
Pieter
pvblomm said:
Hi,
I am looking for this file to do the Garmin mobile XT installation. This file, Que_EN_Unlock_All_.zip, is not available at rapidshare.
Can you help please?
Regards.
Pieter
Click to expand...
Click to collapse
What is this file about ?
I've searched and searched but couldn't find it (only references to it in other ROMs). Could someone either please post the HTC GPS Tool.cab or point me in the right direction as to where I can find it?
I know it's in a couple of ROM releases, but I'm happy with what I have now and just want that file.
Thanks, guys!
EDIT: Nevermind, guys. I found it. Thanks!
No card is found
I have installed TomTom on my new Kaiser and downloaded the free citymap, but when I then run TomTom it says: No card is found. What am I doing wrong?
Hey, i've installed tomtom nav 6 and its failing to get a signal.
I'm running GPStest and its picked up the gps unit but says 'GPS starting up' with a yellow dot, suggesting perhaps that its not working properly? and then all the bars are right at the bottom, just a little bit of red visable.
don't really understand the top bits - HDOP: 0.00 and Fix: 1D
any ideas on what might be up with this? I'm new to GPS on't kaiser
ugh, gps can be tricky sometimes for some people, like myself. Everyday I plan on using gps I have to follow a similar pattern of instructions to get tomtom to work properly.
1) open gps router and enable com 4 baud 4800
2) open gps test
3) open tt6
4) open/download quickgps
5) close tt6
6) reopen tt6 and download quickgps again
I get less than a ten second fix following these operations that can be continously completed throughout the day. However, once my phone turns off, I usually need to follow these instructions again.
hope this helps. you may want to try a different radio see what other users in your area are using.
marksweb said:
Hey, i've installed tomtom nav 6 and its failing to get a signal.
I'm running GPStest and its picked up the gps unit but says 'GPS starting up' with a yellow dot, suggesting perhaps that its not working properly? and then all the bars are right at the bottom, just a little bit of red visable.
don't really understand the top bits - HDOP: 0.00 and Fix: 1D
any ideas on what might be up with this? I'm new to GPS on't kaiser
Click to expand...
Click to collapse
Try radio 1.64.08.21
I never have to do anything funny to get the GPS to work as long as I have visibility to the sky.. My Tilt takes a LOT longer to get a signal than my SirfIII bluetooth GPS does indoors, but outdoors it's not a lot of difference.
TomTom 6 will pick up a signal without doing anything else, but I usually fire up GPSTest and watch it until it gets a location then minimize it.
Can someone please help me?
I have tried these programs:
Tomtom 6
Tomtom 7
GPSdash
BeeLineGPS
WMMiniGPS
GPS tuner
Google maps
I'm using the latest TLR ROM. My GPS setting are default. Com4 Baud rate: 4800.
Here's the problem. The programs seem to find the receiver and seem to find the satellites. (10-15). But I can get absolutely no signal at all. Indoors or outdoors.
I'm getting quite desperate
Have you used any of the tweaks for GPS? I ask as I did but my signal kept dropping - so I turned the tweak off and now it is fine.
I would also suggest using the QuickGPS application to get the Satellite information quicker
I've tried disabling agps. Didn't help. And yes I have used QuickGPS... but no luck.
Any suggestions? : [
slicker said:
Any suggestions? : [
Click to expand...
Click to collapse
Was it the first try? When I tried first it was 6-8 minutes. Where do you try? In the outdoor?
Have you ever used it?
TB
Do you have correct setting "GPS is managed automatically" ?
When I set to GPS is managed manually, I could not found any way to power on builtin GPS. You have to check box "GPS is managed automatically". I think, it may be point of your problem
I had the exact same issue dude... TomTom 6 didn't work so I installed TomTOm 7... still no signal... even with QuickGPS ran...
Google Maps didn't work either....
I'm not sure what I did in the end... took out the battery, set GPS to 'let windows manage automatically' and ran Quick GPS again.. then run TomTOm 7, go to the 'GPS Status' screen which shows the sat signal charts and stand in a wide open area for 5 mins.. ever since then it has worked fine
all the best.
btw you have to make sure your system date and time are accurate coz otherwise it'll be searching for Sats with a wrong reference to the Sat almanac..
Yes, it's set to manage automatically. I've been trying to get a signal by the window, I left the device just sitting there for more than a half hour and still nothing. I guess I'll have to try longer while being outdoors. Hope it helps... but thanks for your help.
I did that too and it didn't work for me. You have to be outside for the 1st time GPS fix and make sure you run QuickGPS before that. Ohh yeah use TomTom 7 to detect the signal... I find that the most reliable somehow... and be sure it's configured to use the built-in GPS receiver...
I know it feels odd... I nearly sent my unit back for warranty because I was very convinced that the patch antenna was somehow disconnected from the chip. lol.
I had the same issue at one point, due to my fiddling and inadequate hacking attempts!
see if you can track down the HTC GPS tool (it's here on XDA somewhere, but i can't find a link at the mo) and run that.
Chipset should be set to Q7200 (yes i know its actually a 7201A but it works the same) and com port to com 4.
Tap the open port button and you should see the GOS info scrolling through the grey window in the program.
If you see nothing, check the external GPS settings
program tab should be com 4
hardware tab should be non and 4800
last tab should be ticked.
if you still get no GPS info scrolling through the gps tool, then it seems you have the same problem i did. Sadly, i had to hard reset it to get it working again, but it has been perfect ever since.
FYI, this started happening once i had turned aGPS on, and even turning it off did not work for me, so if you have to hard reset, i wouldn't bother ever turning the aGPS on again.
where's the option to turn aGPS on/off?
I just remembered how I resolved my issue... I put a SIM card in I had previously been trying to use it with WiFi (to update QuickGPS) but once I had a SIM in there, the GPS worked. Could it be because I'm now using aGPS? hmm...
you need to install schaps advanced config tool to get to the setting to turn aGPS on and off again.
it seems to be off by default btw.
rhedgehog said:
you need to install schaps advanced config tool to get to the setting to turn aGPS on and off again.
it seems to be off by default btw.
Click to expand...
Click to collapse
I also kept lossing the GPS signal with this on every few seconds. So I turned it off for good
did you maybe install voip on your diamond? If so that's your problem there. Hard reset you diamond don't install voip en there you go.
It worked! Thank you all.... I had to sit for half an hour in direct sunlight but it was well worth it... I'm new to gps... do you have to do this with every new gps receiver or is this just another great feature from HTC?
I'm, having the same probelm here.
I'm on my second diamond as the first one (a HK version) had a fault with the internal speeker. On the First phone the internal GPS worked fine with both TOMTOM 6 and Google maps. The initial setup only took about 30 secs.
With the new phone (UK spec) I have tried TT7, TT6 and Google maps. I have also run quiick GPS, hard reset and enabling and disabling assisted GPS using the advanced config tool.
Is there anything else I should try or is this likely to be another hardware issue?
Solution To Gps Problem
if you installed VOIP you should hard reset...gps dead...:-( no other solution.
Help! My Diamond GPS reception is MUCH worse than on my Touch Cruise
Hi,
I've just got a Touch Diamond, and the GPS reception is absolutely appalling. I have hard-reset twice, after which I've done nothing except download a QuickGPS update, but still the signal strength and its ability to connect to satellites is completely inconsistent and unreliable, even outdoors. I CAN get a good signal occasionally, but it's very rare. Most often I get no GPS signals whatsoever, or else I get just a couple of weak greyed-out signal bars in TomTom.
I can lay my Diamond down next to my Touch Cruise (both have identical TomTom 6 software loaded from the same CAB), and the Cruise always launches the app faster, finds the GPS device faster, AND finds adequate satellites faster. The Touch Cruise has a lot of problems, but the one thing it has always been very good at is GPS, and it has NEVER failed to find adequate satellites in TomTom 6, even indoors. It always takes well under a minute to do so, too. It's surely not unreasonable to expect at least the same level of performance from the next generation of device. Why should the Diamond's GPS performance be demonstrably so much worse?!!
Nine times out of ten, my Touch Diamond will simply sit there for an hour or more with the TomTom status bar reading 'Waiting for valid GPS signal...". Quite often when I open the GPS configuration option in TT6, it shows absolutely NO SHRED of a GPS signal whatsoever, even outdoors. (My Diamond and my Cruise have identical GPS settings in both Windows and TomTom, by the way).
The annoying thing is that the Diamond's GPS HAS worked on a couple of rare occasions, and the signal strength has been at least as good as on my Touch Cruise. The Diamond is much worse at holding the signal however, and is totally and utterly unreliable for navigation. It certainly isn't the 'Ultra-sensitive GPS' that HTC's marketing promised - it's nowhere near as good as the GPS on the Cruise, which is the previous generation! The Diamond's GPS DOES work well on very rare occasions - it's just that 95 times out of 100, I'm not getting anything at all. This makes me wonder if it isn't a WM 6.1 compatibility problem or a conflict of some kind. It's almost as if Windows is having difficulty activating/waking the GPS fully. When (and if) it finally gets going, reception is actually very good.
I have also downloaded the HTC GPS Tool as someone here suggested, and it reveals the same results as TomTom - I usually get either no satellites at all, or I get two or three red satellite status bars and a message saying 'Fix not available'. It ALWAYS shows a data stream coming from COM4 though, so there doesn't seem to be any problem actually finding the GPS device. On the rare occasions when I have got a usable GPS signal, the HTC Tool then shows two or three red status bars and three or four green ones as well. During those rare periods, Google Maps can also find anything from three to ten satellites, even indoors. However, the next few times I try the Diamond's GPS, nothing will happen at all - it's suddenly as if all the satellites have fallen out of the sky.
By the way, would QuickGPS make ANY difference on the Diamond? As other have pointed out, aGPS is disabled on the Diamond by default. Aren't QuickGPS and aGPS the same thing? I don't know. But if so, surely the QuickGPS data is useless on the Diamond?
Does anyone have ANY idea how to make GPS on the Diamond work as well as it does on the Touch Cruise? Does anyone know why it doesn't already? Has anyone else done a direct comparison between the Diamond and another HTC device using the same GPS software?
I really like the Diamond, but it's incredibly frustrating that the GPS is unreliable to the point of being unusable. At the moment, I'm having to carry the Cruise for GPS navigation and the Diamond for everything else! Certainly not what I paid for. It should do this stuff straight out of the box. Since it doesn't, I can only assume my device is faulty so if I can't get it fixed by the weekend, I'm returning it for a replacement.
Thanks,
Rob.
P.S. Sorry for such a long post, but I needed to vent.
Hi there, I'm having the same problem as RH Photography.
All the programs are trying to communicate, but no fix at all. Once I got a fix, but only 4 sattelites, when in my car GPS BT had fixed to 9!
Will try hard reset and install HTC GPS tool an try to fix
I managed to install TT and set all the setting that I saw in a post somewhere but I can't get a GPS signal. When I'm in the TT "Show GPS status" menu it shows that it found a satellite but when I switch back to the map it says "Waiting for a valid GPS signal...". I tried doing it outside with no luck. It just wont get the signal. Any help?
well, i know you said you followed some settings, TT works fine on my TP, so here are my settings;
->set to internal gps
in Settings/ External GPS
-> gps program port = com4
-> no gps hardware port
-> under access, make it manage gps auto.
hope this helps,
That's how I set my preferences. How long did you have to wait the first time to get a signal? And did you stay in one place?
I read somewhere that you need to run HTC GPS Tool prior to running TomTOm for the first time. I don't know if that is necessary or not, TT7 works on mine, but it takes a good 4-5 minutes before it acquires satellites. Garmin acquires much faster and I have heard that TT6 is quicker as well.
well, all i did was install TT, and run it. i did use the agps program at first and my gps acquires satelites within 30secs or under ... it does tend to lag a little (yest when i was driving, when i reached the turn, it said i had 5metres to go, but when i made the turn, it recognized that i did, so it was a small error)
Well it still doesn't get the signal. Ill try it another time when its warmer so i don't have to put my phone on the window. If that doesn't work its bye bye TT and than its either GArmin of iGo
jaszek said:
Well it still doesn't get the signal. Ill try it another time when its warmer so i don't have to put my phone on the window. If that doesn't work its bye bye TT and than its either GArmin of iGo
Click to expand...
Click to collapse
Make sure QuickGPS is updated and try again. I have TT running and it works great. I also use Google Maps without any issues. Able to get a lock under 1 minute.
change rom and radio.
would I have to change the rom and radio If I have the original, HTC Factory rom and radio? Bought mine unlocked.
well im using a different rom and radio as well .. that could be why ...
works perfect
always update your QuickGps, mine does it in 4-5 seconds
jaszek said:
I managed to install TT and set all the setting that I saw in a post somewhere but I can't get a GPS signal. When I'm in the TT "Show GPS status" menu it shows that it found a satellite but when I switch back to the map it says "Waiting for a valid GPS signal...". I tried doing it outside with no luck. It just wont get the signal. Any help?
Click to expand...
Click to collapse
it happen to me, just reset
jaszek said:
I managed to install TT and set all the setting that I saw in a post somewhere but I can't get a GPS signal. When I'm in the TT "Show GPS status" menu it shows that it found a satellite but when I switch back to the map it says "Waiting for a valid GPS signal...". I tried doing it outside with no luck. It just wont get the signal. Any help?
Click to expand...
Click to collapse
I saw many answers but noone mentioned the AGPS.
If you see all blue bars once and it turns back/forward to grey/blue bars; then dissable AGPS.
I think I have also similar problem... Sometimes it works and usualy it works if I run also GoogleMaps but without this I get only 5-10 gray bars with strong signal but they do not come blue.
Is only ROM and Radio update cure?