Database Develop

[Q] GPS problem: fix -> lose fix -> fix -> lose fix

I'm using CM7 on my Nexus One. The issue happened twice; right now the GPS is working fine but I'd like to find what can be done to diagnose this, or if there's anyone out there who already knows a fix...
Here's what it looks like:
I turn on the GPS, open GNavigation (or Waze, or Maps). GPS gets a fix but when I start driving, it doesn't update my location. After a while, it loses the fix, the reacquires it, still doesn't update it, loses fix again, and this keeps happening as 5-minute long loops.
Here's how it looks like in the GPS Status app:
It's as if GPS gets a fix, then hangs (my coordinate are not updated in GPS Status app) without giving any errors, then turns itself off and on, gets a fix again, rinse and repeat.
What I tried:
Reset and download A-GPS state. Reset dalvik cache using recovery. Reset A-GPS state, turn off GPS, turn off phone, turn on phone (and variations of this). Didn't work...
What worked:
Finally I got sick of it and took out my real GPS device. I didn't turn off nexus' navigation (wanted to torture it a bit out of spite and frustration).
After driving for 40 minutes (and nexus finding, losing, finding ... GPS fixes as I was driving), suddenly it got a fix, and it just started working again without problems.
Anyone know what's happening here and how to fix it? Thanks so much in advance

You are not alone
Rebooting almost always fixes it for me. Unfortunately it takes several minutes.
Airplane mode also instantly fixes it, but then you lose A-GPS and all communications.

Radio updating may fix the problem.
Try flashing a latest radio image.

Latest radio
Thanks. I guess a new, functioning radio would indeed solve the problem.
However, I already have the latest radio flashed: 32.50.0032U_5.12.00.08 for the Nexus One. Earlier radios have other heavy shortcomings, so they are not a good option.

i wold know if it was good be4
cuz it was worked fine but now ive same problem
i thought this problem form rom
but now i dont know the reson
sorry 4 broken eng
thx

I am waiting for ICS and hope that will fix it.

GPS behavior - normal after reboot or from cold?

Can someone help me confirm if this is normal GPS behavior? I'm rooted on ANG3 with the latest maps 9.2.0.
If I start maps after a reboot, or when GPS is "cold" like using for the first time in the morning, the GPS indicator in the status bar will come on for a second or two, then just turn off - at which time maps stops updating my location. It does this same behavior with other GPS apps, including navigation. I found out if I wait like 10 seconds, the GPS status bar indicator comes back on and remains on - from then on behaving normally. After that, I can close maps, reopen, use navigation, use GPS status or GPS test apps, etc., all normally.
I had initially been closing whatever GPS app I was using and reopening when this happened, and the problems kept repeating...but if I found out if I just wait for those 10 seconds or so, then the problem is completely resolved until the next reboot or cold start (like if I wait 10 hours to use a GPS app again).
So do other people have that same GPS behavior immediately after a reboot or from a cold GPS start - where GPS only comes on for a second or two, then turns off for 10 seconds or so, then comes back on and will remain on and work normally?
If not, any idea what the problem might be? I've tried clearing cache of gps apps and clearing dalvik cache...but maybe this is normal behavior?

No problems with my gps here, i personally keep it turned off until i need to though so not sure if that factors in to it, you may need to take it in because that sounds like a possible hardware issue. Have you tried a factory reset/reflashing?
Sent from my SM-G900A using Tapatalk

Thanks for the reply. Yeah, I wonder if leaving your gps off mostly, and only turning it on when needed might affect the behavior I'm talking about. I haven't tried a factory reset yet...was hoping to avoid that, and especially didn't want to do it if others have the same gps behavior. Maybe someone else who leaves gps enabled can test this out by rebooting and opening maps?

netter123 said:
Thanks for the reply. Yeah, I wonder if leaving your gps off mostly, and only turning it on when needed might affect the behavior I'm talking about. I haven't tried a factory reset yet...was hoping to avoid that, and especially didn't want to do it if others have the same gps behavior. Maybe someone else who leaves gps enabled can test this out by rebooting and opening maps?
Click to expand...
Click to collapse
Hate to be the bearer of bad news and all that, but i feel like if it was that big of an issue there would be more people posting about it. I know you don't want to but a factory reset fixes most issues, i may be wrong though so feel free to wait it out and see if someone has a solution :/
Sent from my SM-G900A using Tapatalk

I had a chance to check the behavior of my wife's Galaxy Alpha (uprooted). Actually, her gps seems to act similarly except that the period of time it spontaneously turns off is more like 5 seconds instead of 10. But that leading me to think what I'm seeing is normal. I'd still appreciate some confirmation though, so if someone could:
1. Turn on gps
2. Reboot
3. Open maps and observe the gps indicator in the status bar for about 30 seconds
4. Report if the indicator disappears during that time and for how long

netter123 said:
I had a chance to check the behavior of my wife's Galaxy Alpha (uprooted). Actually, her gps seems to act similarly except that the period of time it spontaneously turns off is more like 5 seconds instead of 10. But that leading me to think what I'm seeing is normal. I'd still appreciate some confirmation though, so if someone could:
1. Turn on gps
2. Reboot
3. Open maps and observe the gps indicator in the status bar for about 30 seconds
4. Report if the indicator disappears during that time and for how long
Click to expand...
Click to collapse
I gave it a shot, no issues here, im no where near stock though so im not sure how much thats worth.
Sent from my SM-G900A using Tapatalk

netter123 said:
Can someone help me confirm if this is normal GPS behavior? I'm rooted on ANG3 with the latest maps 9.2.0.
If I start maps after a reboot, or when GPS is "cold" like using for the first time in the morning, the GPS indicator in the status bar will come on for a second or two, then just turn off - at which time maps stops updating my location. It does this same behavior with other GPS apps, including navigation. I found out if I wait like 10 seconds, the GPS status bar indicator comes back on and remains on - from then on behaving normally. After that, I can close maps, reopen, use navigation, use GPS status or GPS test apps, etc., all normally.
I had initially been closing whatever GPS app I was using and reopening when this happened, and the problems kept repeating...but if I found out if I just wait for those 10 seconds or so, then the problem is completely resolved until the next reboot or cold start (like if I wait 10 hours to use a GPS app again).
So do other people have that same GPS behavior immediately after a reboot or from a cold GPS start - where GPS only comes on for a second or two, then turns off for 10 seconds or so, then comes back on and will remain on and work normally?
If not, any idea what the problem might be? I've tried clearing cache of gps apps and clearing dalvik cache...but maybe this is normal behavior?
Click to expand...
Click to collapse
Try this : http://forum.xda-developers.com/showthread.php?p=56982923
Sent from my SAMSUNG-SM-N910A using XDA Premium HD app

Thanks for the suggestions. I'm not sure what's going on, because I haven't really tweaked anything but it's now acting normal most of the time even after fresh reboots. But I did still replicate the behavior several times on my wife's stock Galaxy Alpha. Anyway, I'm going to be keeping my eye on it and trying to see if I can figure out what variables seem to be causing the behavior. If anyone else ever notices this though, please post.

Just an update: the behavior had seemed to fix itself, but this was while I was traveling out of town for the holidays. Back home now, and the behavior returned. Since I've replicated this with my wife's stock Galaxy Alpha, I'm wondering if this has something to do with my home location being set in maps...or? Seems weird that it resolved while traveling but continues when back home. Really surprised nobody else has noticed this. Maybe it's something specific to my home location? Guess I will keep checking on it and report back if I figure anything further out.

GPS doesn't work while driving in Waze or Google Maps

Hello I'm having a problem with my GPS signal. I followed this guide to fix it but still have the problem: http://androidforums.com/threads/gps...-guide.761247/
I have NO PROBLEM getting my accurate location within 1-5 seconds when sharing location on whatsapp/telegram or other apps. Even opening Google Maps or Waze, they also detect my location very very fast. I'm taking less than 5 seconds and it's very accurate.
The problem comes when I try to NAVIGATE with Waze or Google Maps. This is when I'm outdoors in my car of course. My phone doesn't get a GPS signal. It takes a very very long time, sometimes 10 minutes to get a lock on. The funny thing is that when I followed this guide and I put the airplane mode on, the apps got a lockon on the GPS, but as soon as the airplane mode was off they lost GPS signal and had a problem locking on.
I have the GPS TOOL app installed and outside I get a lockon of about 10-15 satellites of 22 but it doesn't happen instantly. It takes from 10 to 60 seconds to get a lockon. But that is not even the problem. I could live with that, but the real issue is that the signal comes and goes. So sometimes the apps have a lockon for 1 minute and then they lose it for 3 minutes and again and again.
When I'm indoors it takes about 30 minutes to get a lockon on but I get from 1 to up to 6 satellites even though my apartment is the one on the top. There are no other apartments above it so I should have a bit more of a chance to get a signal. But it barely connects and sometimes never. The issue is the same. It may connect sometimes but it loses signal. 1 minute it remains connected and them loses it for 5 minutes and so on.
I attached some screenshots of how waze never has a GPS connection (unless I turn airplane mode on. I'll test this later on the road trying to get some place and I'll update if this really makes the GPS lockon but it's not ideal to have to use airplane mode to get a lock on GPS but not have internet for anyethign else). I have also attached the specifications of my phone. I hope you can help me out. It's a samsung galaxy s5 mini. And mainly I want to know if this could be because of the KITKAT firmware because I have read that many phones have GPS problems now, or if this could actually be a problem with my phone. I hope not becuase it's a new phone. I have one month with it and I'm in Mexico.

I have the exact same problem with my Samsung galaxy S5 Mini - Found this thread while looking for suggestions. So you're not alone!
My workaround is kind of annoying. I run Waze and the GPS Tool from the Play store at the same time. When Waze loses GPS, I switch back to the GPS Tool and wait for it to re-establish 3D Fix. Then switch back to Waze and it's stable for a few minutes. Then back and forth...

I have similar issues with Sygic, samsung support was not very helpful. But it seems that it is a hardware issue with S5 mini
Check out also this thread http://forum.xda-developers.com/galaxy-s5-mini/help/gps-issue-t2871145

gps issues

Looking around is there a GPS problem with the mi 8

Nope.
There was a permission related google maps issue. Workarounds were either uninstalling google maps updates / installing an old version via apk or revoking google location access, and then starting google maps again and allowing location access again.

There is. I have issue with GPS. Not Google maps. No App that uses GPS is getting coordinates some time. And when that happens, compass is non functional. It is frozen on some angle, no matter what i do. Also gravity Sensor (for fliping screen, on YouTube for example) is non functional. And when i try to reboot phone freeze on Black screen and i must force reboot by holding powerbutton for 10 seconds.

Yeah that's not a general issue or known bug.... somethings wrong on your device.

But it is software Bug on mine device. Right after reboot everything works as expected. After some time (3 to 5 days) it goes bad. I have the phone for around one month. I didnt do any mods only updated everything to latest version. So i think it is bug.

Search around, there's a couple things you can try.
.) Edit/fix agps settings
.) Fix google maps through revoking google location access
.) if all else fails factory reset
*edit*
https://forum.xda-developers.com/mi-8/help/issue-mi-8-gps-t3822926/page9 read this thread backwards

It is very rare. First time i have noticed it when i started waze and for 5 minutes it doesnt showed movement and i was going 130km/h. After quick reboot with powerbutton hold sorted it. Then in 3 days i couldnt rotate YouTube video. And i had a little time so i looked it up, and compass showed 349 degrees no matter what direction phone was pointed. And i also checked GPS test App, and 0 satellites were available. That all was week ago. Now everything is working fine. And i also noticed one small problem. When phone switch from 4G of home provider to roaming 2g or 3g data wont work. I need to activate airplane mode for a while, then it register again in roaming network and it works fine.

Question WiFi Issues

Good day everyone, I'm having a really frustrating problem since I got my phone a month ago. I hope I can get some help here.
From day 1 I've had issues with network on my WiFi. No issues connecting to it, no issues using the internet, let me explain. I first noticed it on MIUI Themes. That was the first thing I went into after setting up my phone. It kept saying "can't connect to network". I figured it was a bug and will be fixed in the 12.5 update (spoiler alert: it didn't). Then I started to notice during setting up of my accounts, discord, reddit, etc. that the login was incredible slow the first time. It would just keep loading when I hit next. Not long after, I downloaded a game and it refused to update saying "can't connect to server". I had to start the process with my data then switch back to WiFi. For clarity, once I'm in the game itself there's no issues, the stability never drops, I never lag, etc.
It became truly evident it wasn't isolated incidents when I would open one of my online shopping apps. It loads the main screen instantly but when I switch the tab to see notifications, the page would load but the notifications would take up to 30 seconds to load. If I clicked on it, the next page would take another 30 seconds to load. Since I've used this app on my previous phone/ipad on the same WiFi I could tell there was something wrong. It should be instant. I opened up MI Community app and I kid you not, it must have taken me 10 - 15 minutes to create an account with all the loading/lag. Every single time I open the app, it takes at least 40 seconds to a minute to load with other pages lagging as well.
I started this long process of trying everything I could find that talks about it which was not much and usually about older phones. I tried everything I could find except factory reset (some have said it doesn't fix it after trying it themselves). I tried all the WiFi adjustments, traffic mode, off private DNS, developer mode options, and obviously reset networks/router/reboot multiple times.
After spending a couple of hours trying to find every mention of this whether it's Youtube, websites or Reddit and trying them (I would switch them back to default after testing the suggestions as they didn't work), my PC started giving WiFi problems. It NEVER gives problems but I figured maybe it was due to the turning on/off router multiple times. I was so frustrated, I was like, screw this I'm done.
I restarted my PC and switched to my PS4 (which runs on the same WiFi with no issues ever in 3 years). As my PS4 booted up, I picked up my phone to check the delivery status on my shopping app and BAAM! For the first time since I downloaded the app, my notifications appeared instantly like it should, the next page loaded immediately. I was like, hold up... I went into MI Community app and BOOM! it loaded immediately, I was shook. One final test, MIUI Themes that has never worked properly since day 1 with its constant "can't connect to network". BLAAM! Every page, instant, clean sweet speed. It felt like a whole new phone, like the new phone that I was supposed to feel all along.
I enjoyed a good 6 hours of bliss, constantly checking my shopping status just as an excuse to enjoy witnessing the speed. He giveth and then he taketh away and as luck would have it, there was a power outage midday. When the power was back on and the WiFi was up, we were back to the suffering. I tried to restart my PC as that was the key trigger and it worked for about a minute and then was the end of it. No amount of shutting down / restarting PC/router fixed it again.
There's something blocking the connection between my router and phone I believe. I figured the initial restart PC fix stopped the connection to the PC and gave the priority to my phone, if you will. That's rubbish I know because my WiFi runs on 4 other devices and never lags.
I'm no tech expert, in fact, I'm the opposite of that, it's embarrassing. I hope y'all can see something I'm unaware of and guide me. I'm certain the phone isn't defective and my WiFi is fine on every other device not to mention it ran flawlessly for 6 hours while other devices were also using the same WiFi.
If you've read this far, thank you very much. I apologize the post is very long, I wanted to get everything in so it paints a clear picture of the issue. I'll add a TLDR just incase.
TLDR: WiFi issues from day 1 in 2/3 of apps mostly with initial connections. 1 month later a chance restart of my PC fixed it. Power outage later that day, problem returned.
T