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Old March 24th, 2010, 04:40 AM   #1 (permalink)
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Default GPS problem on SPICA

I have problem with my original, not upgraded, spica (i5700xxil2). SPICA is keeping turning GPS module off always when display goes off (typically after minute). In this case I am unable to use tracking software, like my tracks. There is always only information at the beginning of track when I wait for first GPS fix and then when I checked my speed or something. Phone should in these cases keep GPS module working on background, but it seems that SPICA keeps turning it off completely. I have to always wait for new GPS fix when the phone is unlocked even with google maps (lot of time lost!). Itís very annoying and makes this phone unusable for me! Donít you know if this is because of the phone stupid design, firmware version, or bad GPS module on my specific piece?

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There is also another issue, that is also sad, but does not make my angry so much. It seems that GPS module in SPICA is not providing GPS time for Software. In many tracking software you have bad time stamps, or time is missing completely from tracking records.

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Old March 24th, 2010, 12:33 PM   #2 (permalink)
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I have the same issue, but its because I have put my phone in my pocket. It needs to be able to "see" the satellite otherwise it can't accurately fix your position.

If you are driving put it on the dash board. If cycling or walking maybe putting it around your neck or inside your pocket if you have thin material trousers and no long coat on.

I don't know though, just suggestions.
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Old March 25th, 2010, 01:29 AM   #3 (permalink)
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I’m sure that it’s not a problem with GPS satellite visibility. I tested several times and proved on my piece of SPICA that GPS module is turned off completely if you push lock-screen button. I spoke with Tatoo owner yesterday and he said that is pretty sure that GPS module is not turned off when he lock screen in his HTC. I’m convinced that there is something wrong with SPICA in this case. I’m trying to find out if this is a problem of hardware or firmware, or my specific device is working wrong…
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Old March 25th, 2010, 06:28 AM   #4 (permalink)
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Quote:
Originally Posted by gurik View Post
Iím sure that itís not a problem with GPS satellite visibility. I tested several times and proved on my piece of SPICA that GPS module is turned off completely if you push lock-screen button. I spoke with Tatoo owner yesterday and he said that is pretty sure that GPS module is not turned off when he lock screen in his HTC. Iím convinced that there is something wrong with SPICA in this case. Iím trying to find out if this is a problem of hardware or firmware, or my specific device is working wrongÖ

I have tried what you have said and it looks to be an issue. I am not sure if it is the phone issue, or a software issue.

What i did:
- installed GPS Status from the market
- started the GPS
- started GPS Status
- wait for it to get a satellite lock
- lock the screen
- wait a few seconds ( i think no more then 10)
- unlock the screen

GPS Status was on, but the satellite lock was gone.

The GPS however was shown as active in the phone settings and in the Power widget from the screen.

So, it might be both, the phone's problem (it stops the GPS when it is locked, or a software problem (GPS status looses the connection with the GPS receiver when it is locked, or Android itself cuts the GPS connection (for power saving reasons)).

Then i have done a different test:
- started GPS Status
- wait for it to get a satellite lock
- send GPS Status in background (press home button)
- wait a few seconds ( i think no more then 10)
- get GPS Status back

There was again no signal shown on it. The lock was obtained faster than if i had locked the phone, however.

I think this means that the software behaves wrongly in GPS Status case.

Maybe you can do the same tests with your software, it might be the software fault and not the phone's.

I hope all of this helps you somehow ...
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Old March 25th, 2010, 09:28 AM   #5 (permalink)
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Quote:
Originally Posted by dancat View Post
I have tried what you have said and it looks to be an issue. I am not sure if it is the phone issue, or a software issue.
Dancat> Thanks a lot for your answer. This confirmed me that it’s not an issue of my phone. You exactly described what is happening to me. In your second test – with home button pressed: I think it is normal behavior most of the software using GPS that in the background stops logging GPS information (in this case android probably turns off module to save your battery). Tracking software (I use "My Tracks") uses classes that allow them to log GPS also in the background (and on HTC phone also in the case of locked phone) when tracks your route. For testing GPS module I use “GPS test” downloaded from market.

Dancat> what firmware are you using? Still 1.5?

Is here anyone who can confirm this SPICA behavior on any 2.1 firmware installed on it?
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Old March 25th, 2010, 09:40 AM   #6 (permalink)
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Dancat> what firmware are you using? Still 1.5?

Is here anyone who can confirm this SPICA behavior on any 2.1 firmware installed on it?[/quote]


I have 2.1 installed.

And i think you should try to do another test using Google Maps.

Just start it, let it get the satellite lock then lock the screen and walk a little (i think some hundred meters will do it). Then check your phone and see if your location is properly updated.
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Old March 25th, 2010, 10:25 AM   #7 (permalink)
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Quote:
Originally Posted by dancat View Post
Is here anyone who can confirm this SPICA behavior on any 2.1 firmware installed on it?


I have 2.1 installed.
This is bad news for me, because it means that firmware upgrade is not a solution for SPICA. On the other hand, I found a forum in Czech rep., where is a SPICA user which uses sport tracking software also with locked phone (still 1.5 firmware). She complains about GPS time problem, which is probably another SPICA GPS issue. So I am confused. Anybody with same / opposite experiences?
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Old March 25th, 2010, 11:56 AM   #8 (permalink)
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This happens to me too; at first I thought i was having GPS reception problems but my spica does exactly what the others have reported, both with the GPS Test and Cardiotrainer apps. It worked fine if I set the display to never time out, but then I accidentally called someone while running today, so it's not the best solution...
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Old March 26th, 2010, 04:05 AM   #9 (permalink)
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I think the GPS issue is also due to really low signal reception of the SPICA. Many GPS softwares can't get an accurate lock at all, though Google Maps often does. Use the app "GPS Test" from "Chartcross Limited" to see the signal strength from each satellite in view. Post your signal levels here?
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Old March 27th, 2010, 01:58 PM   #10 (permalink)
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As i recall, I had 4-5 satellites locked. Strength was in the yellow, about 30-40.
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Old March 28th, 2010, 07:07 AM   #11 (permalink)
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Quote:
Originally Posted by PenguinsControl View Post
As i recall, I had 4-5 satellites locked. Strength was in the yellow, about 30-40.
Yes, mine are in the red-yellow range all the time too here... perhaps sometimes slightly higher..... Still many/most GPS software just wont work reliably or at all.
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Old March 28th, 2010, 05:08 PM   #12 (permalink)
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I would not blame the hardware. I had used it during the weekend with iGo (iGO My way for Android - The ultimate navigation for Android) and it worked fine.
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Old March 29th, 2010, 11:24 AM   #13 (permalink)
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iGo keeps the screen from timing out doesn't it? Maybe it's some sort of battery saving feature to stop the GPS while the phone is locked. I've noticed it doing the same thing with WiFi.
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Old March 29th, 2010, 12:25 PM   #14 (permalink)
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Quote:
Originally Posted by PenguinsControl View Post
iGo keeps the screen from timing out doesn't it? Maybe it's some sort of battery saving feature to stop the GPS while the phone is locked. I've noticed it doing the same thing with WiFi.
If you want it to, it does. But i have minimize it (if you press the home button, it won't stop like other applications, it will just move in the notification area) and then locked the screen. The screen stays locked, but when you will open it and raise iGo it will have the updated position.

And yes, i also think that it is a power saving feature and all depends on how the software uses the hardware. I don't believe it is a hardware fault.
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Old March 30th, 2010, 05:58 AM   #15 (permalink)
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I have a fun problem with the GPS on my Spica/Portal.

It keeps thinking I'm a couple of hundred miles away, always the same little industrial estate just north of Coventry.

I think it's the aGPS rather than the straight GPS (haven't really tested that out yet). It's not a huge problem but does confuse a few people on Latitude when I move around so quickly!
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Old April 1st, 2010, 11:30 AM   #16 (permalink)
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Quote:
Originally Posted by karnka View Post
I have a fun problem with the GPS on my Spica/Portal.

It keeps thinking I'm a couple of hundred miles away, always the same little industrial estate just north of Coventry.

I think it's the aGPS rather than the straight GPS (haven't really tested that out yet). It's not a huge problem but does confuse a few people on Latitude when I move around so quickly!
I have that exact problem and its doing my head in!!

At first I thought it was because I didn't have the "use wireless networks" option to detect locations set but then I noticed the map would show Coventry but it would say (in the speech bubble overhead) that I am in Manchester!!

I have to then go in to latitude and select my location then show on map and it updates itself! Its very weird and I only pray that 2.1 fixes it (if it ever gets released)
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Old April 16th, 2010, 05:21 PM   #17 (permalink)
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I have the same problem with my Spica using the My Track application. It can log the track only if I configure the display to never turn off. I tried G1 before with My Track, that worked just fine.
In GPS Test the SNR is never better then "yellow", the time cannot be read from the GPS module.
Additionally the G sensors are not calibrated and cannot be calibrated. Only if the application can calibrate it. But for example Layar cannot.
After using the phone for one week I'm really disappointed.
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Old April 18th, 2010, 10:06 PM   #18 (permalink)
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I've been having problems with the GPS on my phone as well. I'm trying to use it with c:geo to geocashe and it's always way out and doesn't always find my locations. Think it must have a very weak GPS signal. Very disapointing!
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Old June 28th, 2010, 03:41 PM   #19 (permalink)
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Just to bump this one up, really, as I've been trying to use MyTracks, but as soon as the screen locks the GPS signal goes, very very frustrating!
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Old August 28th, 2010, 05:16 PM   #20 (permalink)
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Just updated to official 2.1 and now GPS doesn't work at all. It won't lock on even with satellites in range.
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Old December 5th, 2011, 08:36 PM   #21 (permalink)
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I am trying to use tracking software to go hiking, and my Samsung Galaxy Indulge would keep GPS lock when I lock the screen. My friend's Droid X also keeps the GPS lock. The Samsung Stratosphere loses the GPS lock as soon as I locked the screen. This is REAL bad for me, enough to make me switch phones and/or carriers breaking contracts if needed unless there's a solution for this soon. =( Pretty disappointed with Android software for dropping the GPS every time I lock my screen.
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