[Q] Strange GPS behaviour on Huawei Ascend Y550 - Android Q&A, Help & Troubleshooting

Hi all,
this is my very first post here on xda, so please forgive me if this is not the proper section for my thread. I searched for other thread about similar issues, but I didn't find anyone. I'm Italian, so I even hope to not being wrong in English writing.
I recently bought (on November 2014) an Huawei Ascend Y550-L01 (Android 4.4.4, EMUI 2.3, ROM B137), coming from a (Portuguese) Samsung Galaxy Y Pro GT-B5512. Soon I experienced a very strange GPS behaviour: GPS turns itself off. No problem in signal fixing, nor in quality or precision. It simply deactivates.
First I noticed this using the OruxMaps app (which works fine on many phones, even my old one), simply recording the track. Indeed, at the beginning the app was being killed (because of the integrated task-killer) when screen was off, but after setting it as a "protected" app, when I record a track, GPS works while screen is on and, if screen turns off, then most of the times (not always) GPS is deactivated from within Android settings.
I even received (from the purchasing time) some GPS errors while in the home screen... I don't remember exactly that error, but in a fast Internet search it was told being caused from the weather widget, precisely from the "actual position" setting. I deactivated it and added manually my town and those errors were gone.
Then I noted another strange behaviour: GPS turns off even in standby, during night. It is on "extreme precision" on evening and it's off at morning. Sometimes I notice these deactivation (in the notification menu or into the energy saving widget) while I'm using the phone (but always when screens is off), without any error or message popping out... It simply gets deactivated.
Any other experiencing this strange issue? What could be the cause? I sent a mail to official support, but they asked me to take the phone in a service point... I can't stay without phone, so I would like to avoid this if it's not strictly needed.
I think it's a ROM issue (said that even in the mail), but unfortunately still there is no alternative one (or at least I found none). I think also that (almost) every app that uses GPS suffers for the same behaviour I faced using OruxMaps.
PS: phone IS rooted by a couple of week, but I'm facing this issue from the first day.
What the hell is going on? Any help, idea or trying suggestion is appreciated...
Many thanks!

Up?

I also see strange problems on the Y550-L01 connected to GPS.
In my case the GPS does not disconnect completely, but during car navigation the signal gets lost from time to time (tested with different navigation apps).
This is only the case when the Y550 is NOT connected to the charger. If I connect it to the power supply, GPS works quite reliable and accurate!
For me this sounds like a software problem (maybe connected to a power saving mode?). I hope a firmware update will fix this soon.

Even to me this is a firmware issue. Before of your answer, I was really beginning to think it's a fault of my phone. Now that I'm not the only one, I went back to think of a bug.

If it is a power save problem, then try to use this app to stop the power save mode :
https://play.google.com/store/apps/details?id=eu.thedarken.wl
(ultra light : 35K, free/no adds)
"Wake Lock gives you control over the Android Power- and WifiManager.
For example, you can force the PowerManager to keep the screen on or have the CPU still running in standby mode or make sure the Wifi connection keeps running at full performance.
You can use it on any android phone or tablet.
Use it to keep the screen on in full brightness or dimmed mode during movies or slideshows.
To make sure the CPU is still running in the background doing your tasks when you press the standby button."
Thank you for the report.

It seems that the new huaweï G620S has the same GPS problem :
https://www.google.fr/search?q=G620S+GPS+problem+fix
Any news of an Huaweï update ? Hope yes...

magooz85 said:
Hi all,
this is my very first post here on xda, so please forgive me if this is not the proper section for my thread. I searched for other thread about similar issues, but I didn't find anyone. I'm Italian, so I even hope to not being wrong in English writing.
I recently bought (on November 2014) an Huawei Ascend Y550-L01 (Android 4.4.4, EMUI 2.3, ROM B137), coming from a (Portuguese) Samsung Galaxy Y Pro GT-B5512. Soon I experienced a very strange GPS behaviour: GPS turns itself off. No problem in signal fixing, nor in quality or precision. It simply deactivates.
First I noticed this using the OruxMaps app (which works fine on many phones, even my old one), simply recording the track. Indeed, at the beginning the app was being killed (because of the integrated task-killer) when screen was off, but after setting it as a "protected" app, when I record a track, GPS works while screen is on and, if screen turns off, then most of the times (not always) GPS is deactivated from within Android settings.
I even received (from the purchasing time) some GPS errors while in the home screen... I don't remember exactly that error, but in a fast Internet search it was told being caused from the weather widget, precisely from the "actual position" setting. I deactivated it and added manually my town and those errors were gone.
Then I noted another strange behaviour: GPS turns off even in standby, during night. It is on "extreme precision" on evening and it's off at morning. Sometimes I notice these deactivation (in the notification menu or into the energy saving widget) while I'm using the phone (but always when screens is off), without any error or message popping out... It simply gets deactivated.
Any other experiencing this strange issue? What could be the cause? I sent a mail to official support, but they asked me to take the phone in a service point... I can't stay without phone, so I would like to avoid this if it's not strictly needed.
I think it's a ROM issue (said that even in the mail), but unfortunately still there is no alternative one (or at least I found none). I think also that (almost) every app that uses GPS suffers for the same behaviour I faced using OruxMaps.
PS: phone IS rooted by a couple of week, but I'm facing this issue from the first day.
What the hell is going on? Any help, idea or trying suggestion is appreciated...
Many thanks!
Click to expand...
Click to collapse
Hi! Better post your question in our small Huawei Ascend Y550 thread. Maybe there someone of us can help.

If you understand German:
http://www.android-hilfe.de/huawei-...gation-unzuverlaessig-nur-im-akkubetrieb.html
These folks have the same proplem, but no solution.
Try it while a charger is attached.

Related

Push Notifications Don't Work With Screen Off (Gmail, Talk, Voice, etc.)

Recently I disabled the best wi-fi performance option (I enabled it on accident while messing around with settings on launch day) which obviously increased my battery life dramatically by actually allowing my phone to go into deep sleep. But now I hit a new issue.
Before I go on, I want to state that I DID apply the SmartSync fix and that my data IS working while my phone is in deep sleep.
New emails I receive with Gmail app do not get pushed to my phone as they should. They are anywhere from 5-15 minutes late if they even show up at all. If I happen to turn my screen on, automatically I get the notification of new emails.
Is anyone else having this issue with Gmail or any other app? I find it strange that while I have data (wi-fi/3g) enabled and working with the screen off, emails still come in delayed.
Any help would be appreciated. I have searched around and most of the answers I came up with (regarding HTC devices like the One X) had to do with SmartSync messing up the connection or someone not having the notifications enabled. I'm at a loss 0.0
EDIT: I tested this with Google Talk had my main account up in Gmail and in another browser windows my other Gmail account. Added both of them, talked to my self, if my device screen was off, I would either get it 1-2 minutes late or not at all. Once I turned my screen back on, the notifications poured in. I also tried the same scenario with my main Gmail account logged off (in case it was canceling out the messages to my phone, which it wasn't) and I had the same outcome. I edited the title to reflect that this isn't a Gmail only issue.
EDIT 2: Did more tests, I tried turning Wi-Fi off completely and running the same tests as above to my surprise everything worked as expected. I initially thought it might be because of my 5Ghz Wi-Fi band, so I tried it all again on my 2.4Ghz channel -- had the same problems as before. Somehow the issue pertains to your screen being off and Wi-Fi being on.
EDIT 3: I just tried streaming Pandora and shutting the screen off (maybe WiFi WAS somehow shutting off) Pandora kept playing no problem. I messaged myself on Talk, got the notification right away. This is very bizarre 0.0 But it might confirm this only happens when the phone is in deep sleep mode... Still doesn't answer why it doesn't happen on 3G or why notifications sometimes still come through.
EDIT 4: Still no fix but I have discovered that for some reason if the screen is off ANY data doesn't go through. Let me explain better:
If I have some thing like Pandora running then it will continue to run once I shut my screen off. But if WiFi isn't being used and I turn my screen off and then lets say I try to connect to it with Cerberus or ping it from my PC or something it will not even though the router reports it as connected.
Very strange behavior.
This is interesting...maybe the wifi performance toggle is associated to the smartsync, and all?.....I will say that with it unchecked I am getting some really really good battery life here compared to previous phones....but I also notice at times when emails are not pushed till I wake the screen during the day....Also the fact my wifi doesn't automatically reconnect to my house when I get back from work till I wake the screen...little things like that...
Havent messed with the best performance setting but will try it today now...
Racer Of All said:
Recently I disabled the best wi-fi performance option (I enabled it on accident while messing around with settings on launch day) which obviously increased my battery life dramatically by actually allowing my phone to go into deep sleep. But now I hit a new issue.
Before I go on, I want to state that I DID apply the SmartSync fix and that my data IS working while my phone is in deep sleep.
New emails I receive with Gmail app do not get pushed to my phone as they should. They are anywhere from 5-15 minutes late if they even show up at all. If I happen to turn my screen on, automatically I get the notification of new emails.
Is anyone else having this issue with Gmail or any other app? I find it strange that while I have data (wi-fi/3g) enabled and working with the screen off, emails still come in delayed.
Any help would be appreciated. I have searched around and most of the answers I came up with (regarding HTC devices like the One X) had to do with SmartSync messing up the connection or someone not having the notifications enabled. I'm at a loss 0.0
EDIT: I tested this with Google Talk had my main account up in Gmail and in another browser windows my other Gmail account. Added both of them, talked to my self, if my device screen was off, I would either get it 1-2 minutes late or not at all. Once I turned my screen back on, the notifications poured in. I also tried the same scenario with my main Gmail account logged off (in case it was canceling out the messages to my phone, which it wasn't) and I had the same outcome. I edited the title to reflect that this isn't a Gmail only issue.
EDIT 2: Did more tests, I tried turning Wi-Fi off completely and running the same tests as above to my surprise everything worked as expected. I initially thought it might be because of my 5Ghz Wi-Fi band, so I tried it all again on my 2.4Ghz channel -- had the same problems as before. Somehow the issue pertains to your screen being off and Wi-Fi being on.
Click to expand...
Click to collapse
Try installing this https://play.google.com/store/apps/details?id=com.logicvoid.powersaversettings&hl=en and unchecking "put data connection to sleep." It may not solve the issue but its worth a shot.
Okay, I just tried streaming Pandora and shutting the screen off (maybe WiFi WAS somehow shutting off) Pandora kept playing no problem. I messaged myself on Talk, got the notification right away. This is very bizarre 0.0 But it might confirm this only happens when the phone is in deep sleep mode... Still doesn't answer why it doesn't happen on 3G or why notifications sometimes still come through.
njfoses said:
Try installing this https://play.google.com/store/apps/details?id=com.logicvoid.powersaversettings&hl=en and unchecking "put data connection to sleep." It may not solve the issue but its worth a shot.
Click to expand...
Click to collapse
Have it, and it is unchecked. That's the weird thing, wi fi doesn't actually turn all the way off because SOMETIMES I do get the push notifications (late, however).
sgt. slaughter said:
This is interesting...maybe the wifi performance toggle is associated to the smartsync, and all?.....I will say that with it unchecked I am getting some really really good battery life here compared to previous phones....but I also notice at times when emails are not pushed till I wake the screen during the day....Also the fact my wifi doesn't automatically reconnect to my house when I get back from work till I wake the screen...little things like that...
Havent messed with the best performance setting but will try it today now...
Click to expand...
Click to collapse
Let me know if that works, if so at least I know I'm not the only one xD
Racer Of All said:
I DID apply the SmartSync fix
Click to expand...
Click to collapse
what is the smart sync fix?
When I installed this app, my cpu reduction and frame rate reduction was enabled. Does that mean this is standard with this phone. Does using this app to disable those setting improve the performance?
Issue continued overnight, tried various other things and nothing seems to fix it. I want to get my notifications but I don't want to destroy my battery life xD is anyone else having this issue?
djscissorhands said:
what is the smart sync fix?
Click to expand...
Click to collapse
This one:
http://forum.xda-developers.com/showthread.php?t=1697375&highlight=smartsync
I have the same problem on my 2nd evo as well after returning the 1st. Going to try a rom with the fix tomorrow. I'll report back with what I find. Hopefully I won't have to return again....
Sent from my EVO using xda premium
AardvarkAttack said:
I have the same problem on my 2nd evo as well after returning the 1st. Going to try a rom with the fix tomorrow. I'll report back with what I find. Hopefully I won't have to return again....
Sent from my EVO using xda premium
Click to expand...
Click to collapse
It's definitely not a hardware problem because if that was the case the phone wouldn't work with wi fi almost at all. My wi-fi connection is rock solid even when the screen is off, just for some reason it won't notify I have the messages until the screen gets turned on.
I did some tests on my gf's stock phone and she's having the same issues, I told her to do some tests on her parents wi-fi when she goes there. I wonder if sgt slaughter has any news.
Btw if you definitely need them on time and need to be on wi fi but don't care about battery life that much just enable best wi fi performance.
djscissorhands said:
what is the smart sync fix?
Click to expand...
Click to collapse
Actually more like a Smart Sync break ... The built in settings/app put your data connections to sleep when your phone goes to deep sleep; this is done to save battery when phone not in use for extended period.
Some folks hate losing the data connections so a flashable "fix" is available for the "problem" ... Look around; you'll find it
Sent from my EVO using XDA
its a sense problem, there's a thread in the one x forums on how to fix it. I'll post when I get home if I can find it. it shuts down to a 'power save' mode after a while plus after midnight or 11 or something.
Just wanted to update that I installed a custom rom that contains the WiFi fix mentioned and although my WiFi doesn't seem to drop how it did before (at least after one day) my notifications are anywhere between 4-10 minutes late on average through WiFi. This seems to be across the board for Exchange email, Gmail & Google Voice.
AardvarkAttack said:
Just wanted to update that I installed a custom rom that contains the WiFi fix mentioned and although my WiFi doesn't seem to drop how it did before (at least after one day) my notifications are anywhere between 4-10 minutes late on average through WiFi. This seems to be across the board for Exchange email, Gmail & Google Voice.
Click to expand...
Click to collapse
Yes my setup also had the wi-fi fix, I can even see my phone connected to the router when the screen is off, the connection is strong.
I had a suspicion it was probably the basic transfer rate of the browser and for some reason I could not adjust this on my fancy 100 dollar router with dd-wrt flashed onto it so I set up a repeater with my older router on stock settings. It seems like the notifications are coming through better now (albeit not instantly) but at least I don't have to turn my screen on every time. It might be a placebo effect or just luck (because at times it does work even with my other router).
EDIT: Ignore the italicized sentence. It was just a stroke of luck, the problem came back.
I'm out of ideas at this point xD
I am having a similar issue as well.
I am rooted and running Fresh Evo LTE 5.1.1 which has the "Disabled SmartSync deep sleep mode" already installed. I also leave my WiFi off (for the same reason as the OP outlines - messages are just plain not arriving or if they do it's after I turn the screen on).
I use gtalk as my primary form of communication on my phone and what seems to be happening is messages from my two closest friends are never arriving. It's hit or miss but seems to be ~45mins after my screen turns off that they send a message and I never get it. One is on Sprint on my family plan and the other is on Verizon. The weird thing is that if I look in my gmail > conversations the messages aren't there either.
I haven't been able to verify any SMS messages that I haven't received but I have noticed that my email notifications seemed a bit wonky but this issue may be fixed with changing my "push" hours (which is retarded to have factory set to only push email between 8am - 8pm).
Question for the smart kids in the class: When does the phone reach "deep sleep"? Is it around ~45mins after the screen turns off?
batgrrlx said:
I am having a similar issue as well.
I am rooted and running Fresh Evo LTE 5.1.1 which has the "Disabled SmartSync deep sleep mode" already installed. I also leave my WiFi off (for the same reason as the OP outlines - messages are just plain not arriving or if they do it's after I turn the screen on).
I use gtalk as my primary form of communication on my phone and what seems to be happening is messages from my two closest friends are never arriving. It's hit or miss but seems to be ~45mins after my screen turns off that they send a message and I never get it. One is on Sprint on my family plan and the other is on Verizon. The weird thing is that if I look in my gmail > conversations the messages aren't there either.
I haven't been able to verify any SMS messages that I haven't received but I have noticed that my email notifications seemed a bit wonky but this issue may be fixed with changing my "push" hours (which is retarded to have factory set to only push email between 8am - 8pm).
Question for the smart kids in the class: When does the phone reach "deep sleep"? Is it around ~45mins after the screen turns off?
Click to expand...
Click to collapse
I also have the dual core mod which I BELIEVE sets my deep sleep right away which is probably why I have the problem more often than you do. One question just so we can start gathering facts large scale, if you're on 3G do you have the problem still? What if you turn 'best wi-fi performance'?
Racer Of All said:
I also have the dual core mod which I BELIEVE sets my deep sleep right away which is probably why I have the problem more often than you do. One question just so we can start gathering facts large scale, if you're on 3G do you have the problem still? What if you turn 'best wi-fi performance'?
Click to expand...
Click to collapse
Correct - I have this problem on 3G. I run on only 3G because the problem is more prevalent on WiFi, but still very common on only 3G.
Currently I have "best wifi performance" turned off. Do you want me to test with it on or off?
batgrrlx said:
Correct - I have this problem on 3G. I run on only 3G because the problem is more prevalent on WiFi, but still very common on only 3G.
Currently I have "best wifi performance" turned off. Do you want me to test with it on or off?
Click to expand...
Click to collapse
On. When I turn it on it pretty much eliminates the issue, it acts just like 3G. But for me 3G is almost perfect (a couple seconds of delay but I can deal with that). Remember though that if you leave it ticked on it will destroy your battery life.
WiFi is on, best WiFi performance is on as well.. I'll run it this way a couple of days and see if I can replicate the problem.
I just wanted to say that I've been having similar issues. I have tried turning on best wifi performance, but I don't think that is helping. For one thing, when I have that turned on, when I wake the phone, the wifi is often times not connected, and it shows 3G. Then it will connect to wifi shortly after I wake the phone. On top of that, I'm still not getting notifications on time. I was notified of an email when I woke the phone that actually came in 10 minutes earlier. Hopefully HTC/Sprint is aware and working on a fix.
Still no fix but I have discovered that for some reason if the screen is off ANY data doesn't go through. Let me explain better:
If I have some thing like Pandora running then it will continue to run once I shut my screen off. But if WiFi isn't being used and I turn my screen off and then lets say I try to connect to it with Cerberus or ping it from my PC or something it will not even though the router reports it as connected.
Very strange behavior.

[Q]Sensors staying active and draining battery after app is closed?

I've noticed something strange which seems to drain my battery faster when it happens.
Some apps that use sensors seem to leave the sensor active after closing the app itself (even with force close from app manager).
I've first noticed this problem with the app "GPS Essentials", then "GPS Status" the next day, they left the "Magnetic Field" sensor active after manually force closing them.
After a few hours, in Badass Battery Monitor, I could see that the Apps were eating about 75% of the battery, and when looking at the details, "GPS Essentials" was using about 45%, more than the kernel and android system), and it said that it had been using the "Magnetic Field" sensor for more than 5 hours, although the app was manually force closed about 20 minutes after I've started it.
That was in the stock ROM.
Since then, I've installed a custom ROM (CheckROM V2, so it's still based on Samsung's base ROM), and the problem is appearing again.
This time, I've had the same problem with Sygic that left the "Orientation" sensor active, and continued using it according to Badass Battery Monitor, even after force closing Sygic.
Did anyone else notice that or is it a problem with my phone?
Is there a solution besides rebooting every time after using any of these apps?
Thanks!
I've found a similar problem, and explanations on why it's happening, but it says that it appeared in Gingerbread but has been corrected in Honeycomb and ICS.
It does seem like the exact same problem with the same symptoms though, so I wonder if it really is gone...
Here is the page where I found the info :
http://fivasim.pcriot.com/androsensor.html
And here is a quote from that page :
Update: After many months of testing and debugging I haven't found a way to fix the battery issue for good. Perhaps I shouldn't... It's not really my issue but a general android problem (just google for "gingerbread battery drain"). And it happens with EVERY app that makes use of the sensors that are the root of the problem.
The battery leakage comes from android sensors that are not well supported by the kernel or the android OS. Most usually the accelerometer sensor causes the issue but sometimes the light sensor and the proximity sensor can cause this issue as well. Other sensors seem to have nothing to do with battery drain.
However I have found what's causing it and ways to `patch` over it (unfortunately, no way to permanently fix it).
Trying to invoke a sensor with such a problem, will cause the sensor to stay open even after the app is stoped and disposed of memory.
Another common issue is a conflict. Two apps register the same sensor, then one app unregisters but fails because the sensor is in use by the other app. The sensor stays in use by one of the two apps and this will remain even after both apps are killed.
In most cases there is a way to fix this:
- In the first case, you may just find which sensor is misbehaving (strange readings, very slow response or 'Failed to start' error etc.). Go to AndroSensor's settings and disable that sensor. Then reboot, run AndroSensor once and wait to see if the problem persists. Most usually the light and the proximity sensors are to blame for this issue. Sometimes the issue is caused only if both light and proximity are enabled, but disappears after disabling any of the two.
- If you don't have a misbehaving sensor then there is probably some conflict. Conflicts can be caused (usually in Gingerbread) when having auto-rotate (accelerometer use) or auto-brightness on.
Solution: Go to your device's display settings and disable auto-brightness and auto-rotation. Then reboot, run AndroSensor once and wait to see if the battery drain continues. If the problem persists then there is probably a conflict with some hidden/system service. Most usual is the conflict with SGS and SGS2 secret menu ( by dialling "*#0*#" on the dialer ). I have found no way to bypass this and it can only be solved by disabling the accelerometer and orientation sensors in AndroSensor, then reboot (orientation sensor makes seemless use of the accelerometer).
The only good thing about this, is that in HoneyComb and ICS the issue seems to have disappeared for good!
Am I really the only one with the problem?
Mithrandir007 said:
I've noticed something strange which seems to drain my battery faster when it happens.
Some apps that use sensors seem to leave the sensor active after closing the app itself (even with force close from app manager).
I've first noticed this problem with the app "GPS Essentials", then "GPS Status" the next day, they left the "Magnetic Field" sensor active after manually force closing them.
After a few hours, in Badass Battery Monitor, I could see that the Apps were eating about 75% of the battery, and when looking at the details, "GPS Essentials" was using about 45%, more than the kernel and android system), and it said that it had been using the "Magnetic Field" sensor for more than 5 hours, although the app was manually force closed about 20 minutes after I've started it.
That was in the stock ROM.
Since then, I've installed a custom ROM (CheckROM V2, so it's still based on Samsung's base ROM), and the problem is appearing again.
This time, I've had the same problem with Sygic that left the "Orientation" sensor active, and continued using it according to Badass Battery Monitor, even after force closing Sygic.
Did anyone else notice that or is it a problem with my phone?
Is there a solution besides rebooting every time after using any of these apps?
Thanks!
Click to expand...
Click to collapse
Does CPU Spy confirm that problem, showing awake instead of deep sleep?
chamonix said:
Does CPU Spy confirm that problem, showing awake instead of deep sleep?
Click to expand...
Click to collapse
It does seem to go to deep sleep, but I still see a big difference in battery life between when it happens (around 7-10%/hour), and after I reboot (~ 1%/hour).
Before I start applications using those sensors, the battery life is normal as well, so I don't think it's something else.
I've just made a few screenshots to show what's happening.
Last night, before going to bed, I've rebooted the phone, then started Sygic and AndroSensor, exited the apps, then manually force closed them to make sure.
Then I left the phone charging for the night.
This morning, I remove the phone from the charger, and Badass Battery Monitor starts from that point to calculate the battery drain from everything (so I'm sure neither Sygic nor AndroSensor have been running at all since I unplugged the phone).
Since then, a bit less than 2 hours have passed (I've barely used my phone during that period since I was getting ready then driving to work).
There was a 5% discharge (which is strangely not as much as I had yesterday, but still more than the usual 1%/hour when in standby) and we can clearly see what's eating the battery the most in Badass Battery Monitor.
The "Orientation", "Pressure", "Magnetic Field" and "Accelerometer" sensors have been running the whole time since it was unplugged.
What do you think, is this normal behavior?
I've now installed another custom ROM (Omega 8, with the new samsung firmware update), and the problem seems to remain..
If I'm the only one with the problem, I'm starting to think it might be something hardware (or an app I've installed every time maybe), since I've had the problem with every ROM I've installed...
Switching to another kernel didn't seem to help either.. I'm really starting to wonder if this is something I can fix.
Does no one else have the problem?
I think I've found the reason but now I wonder why no one else seems to have the problem (or maybe I'm the only one who actually cares ).
It looks like it's a battery usage reporting bug in the Samsung firmwares, not an actual drain.
Whenever you run an app which uses sensors (like GPS Status, AndroSensors, Sygic, ...), there is a good chance that when quitting the app, Android will not register the sensors as "stopped", even though they are not running anymore.
This means that the current battery life calculation takes those sensors into account as if they were still running, and the battery % drops faster than it should.
Here's a post from the creator of GPS Status, explaining the problem :
http://forum.xda-developers.com/showpost.php?p=23106668&postcount=491
There is also a small explanation from the author on the Google Play page for GPS Status, I'll quote :
"KNOWN FIRMWARE ISSUES (please do not report them):
- Samsung phones: Because of a firmware bug those phones may report extreme battery consumption for GPS Status (and for other programs using sensors) even if it is not running. This is harmless and no power is consumed! Just ignore it and let's hope that a future firmware upgrade will fix this."
So I'm still wondering if this is something we can fix, or if we have to wait for Samsung to correct that bug?
Mithrandir007 said:
I think I've found the reason but now I wonder why no one else seems to have the problem (or maybe I'm the only one who actually cares ).
Click to expand...
Click to collapse
Yes I care. Thanks very much for posting this. I've noticed exactly the same thing and it's been driving me crazy. Good to know it's just a false alarm. With ICS 4.0.4 coming to the Galaxy S2 soon, maybe it will be fix there.
Mithrandir007 said:
I think I've found the reason but now I wonder why no one else seems to have the problem (or maybe I'm the only one who actually cares ).
It looks like it's a battery usage reporting bug in the Samsung firmwares, not an actual drain.
Whenever you run an app which uses sensors (like GPS Status, AndroSensors, Sygic, ...), there is a good chance that when quitting the app, Android will not register the sensors as "stopped", even though they are not running anymore.
This means that the current battery life calculation takes those sensors into account as if they were still running, and the battery % drops faster than it should.
Here's a post from the creator of GPS Status, explaining the problem :
http://forum.xda-developers.com/showpost.php?p=23106668&postcount=491
There is also a small explanation from the author on the Google Play page for GPS Status, I'll quote :
"KNOWN FIRMWARE ISSUES (please do not report them):
- Samsung phones: Because of a firmware bug those phones may report extreme battery consumption for GPS Status (and for other programs using sensors) even if it is not running. This is harmless and no power is consumed! Just ignore it and let's hope that a future firmware upgrade will fix this."
So I'm still wondering if this is something we can fix, or if we have to wait for Samsung to correct that bug?
Click to expand...
Click to collapse
If this is really the problem that would be an deep in Android or between the hardware and android as it is the 'batteryinfo' service reporting sensors data.
Indeed, I don't think there is an easy fix for this one, unless someone has already worked on that part ((un)registration of sensors from the battery measurement service).
Hopefully it'll be fixed in a future version of the firmware, or in Jelly Bean.
XDA-Usr : maybe it'll be fixed in that version, indeed..
It is just a false alarm, although it still leads to inaccuracy of the battery level.
Mithrandir007 said:
I think I've found the reason but now I wonder why no one else seems to have the problem (or maybe I'm the only one who actually cares ).
It looks like it's a battery usage reporting bug in the Samsung firmwares, not an actual drain.
Whenever you run an app which uses sensors (like GPS Status, AndroSensors, Sygic, ...), there is a good chance that when quitting the app, Android will not register the sensors as "stopped", even though they are not running anymore.
This means that the current battery life calculation takes those sensors into account as if they were still running, and the battery % drops faster than it should.
Here's a post from the creator of GPS Status, explaining the problem :
http://forum.xda-developers.com/showpost.php?p=23106668&postcount=491
There is also a small explanation from the author on the Google Play page for GPS Status, I'll quote :
"KNOWN FIRMWARE ISSUES (please do not report them):
- Samsung phones: Because of a firmware bug those phones may report extreme battery consumption for GPS Status (and for other programs using sensors) even if it is not running. This is harmless and no power is consumed! Just ignore it and let's hope that a future firmware upgrade will fix this."
So I'm still wondering if this is something we can fix, or if we have to wait for Samsung to correct that bug?
Click to expand...
Click to collapse
Now 1 year has past since your original post. I'm still experiencing the same problem on my Galaxy Note 2. :silly:
luzok said:
Now 1 year has past since your original post. I'm still experiencing the same problem on my Galaxy Note 2. :silly:
Click to expand...
Click to collapse
On my Galaxy S4, the problem seems to be gone, so hopefully it'll be gone on your device as well once Samsung releases the 4.2.2 update.
Sent from my GT-I9500 using xda app-developers app

[Q] WiFi locks turning on, cell signal lost (sometimes comes back, or needs reboot)

Hello, folks!
I have a rooted I9100 (Android 4.0.3 stock from Vivo, baseband I9100VILP3, kernel 3.0.15-I9100VJLP7-CL371396 [email protected] #3, compilation IML74K.VJLP7, CSC I9100UVILP3).
Sometimes I have problems turning on WiFi, it keeps always turning on and neither become active nor allow me to turn it off again. I then need to reboot phone to fix it (when it reboots, WiFi comes turned on and gets on normally).
Another problem I have with it is that sometimes (average of 4 - 5 times a day) phone loses registration with carrier. It completely loses* signal and shows a "prohibited" icon where signal strength is shown at status bar. (Edit) Sometimes it comes back again in a few seconds and sometimes it stays at that state, making me have to reboot it to fix the problem (turning on and off airplane mode doesn't work; in fact, with registration lost and trying to use airplane mode, it doesn't turn off and only fixes with reboot).
*Actually, it doesn't lose signal (can be seen in "settings - about phone - state" screen uploaded), but only unregisters from carrier.
(Edit: screen/phone language is Brazilian Portuguese)
I've downloaded another modem driver but never had time to test it.
I don't know if both problems can have the same cause, but both of them are very annoying (especially signal loss) and I'd like to make some tries to fix them, so if anyone knows what can I do (even data collection to investigate them), your help is very appreciated.
Thanks
Additional test (ServiceMode)
When I was in the forum to post this thread, I've noticed this other thread and I've decided to use ServiceMode code (*#0011#) to investigate further at the next time my cell lose signal. Unfortunately, it showed absolutely nothing. Literally nothing (just "ServiceMode" caption and no text on the screen below).
I just spent the time to post this because I know that, even if it has shown no information (on screen), maybe it still can be a clue for the cause of the problem.
Thanks
Pls help!
Does anyone have some light to shed on this case?
Please, I do really need to fix it, at least the signal loss problem.
Thanks.
Same Issue in the US on Tmobile
Mine started doing this just a day or two ago. Exact same issue. I can kind of operate on the EDGE network but 4G fails, only WiFi seems to work. T-mobile doesn't seem to have a fix for it.
Changed to MIUI
I've just changed to MIUI (reflashed modem also – now it is ZSLPE instead of previous VILP3).
I still have issues with carrier register loss, but until now it always reconnected after a few seconds. Maybe it is a carrier issue and not a phone one.
I don't turn on WiFi a lot, but all times I've tested it, it worked well.
Another thing I've noticed with this change is that battery temperature while charging used to reach 48°C (118°F) or even 50°C (122°F) while battery level was low (less than 50%), but now it stayed around 35°C (95°F), which is completely acceptable.

[Q] Disconnected message when searching

Many times when searching via voice I'm getting a "disconnected" error with a list of other things to tap (like when you tap the clock to see a list of actions).
The phone is within a few feet, on a solid wifi connection. Droid Maxx from Verizon, stock ROM. Watch is the LG G Watch, including the update that came out today.
Any thoughts?
mickmel said:
Many times when searching via voice I'm getting a "disconnected" error with a list of other things to tap (like when you tap the clock to see a list of actions).
The phone is within a few feet, on a solid wifi connection. Droid Maxx from Verizon, stock ROM. Watch is the LG G Watch, including the update that came out today.
Any thoughts?
Click to expand...
Click to collapse
My LG G watch seems to be encountering the disconnected error a fair amount as well. It is paired with a Nexus 5.
It appears the bluetooth link is going down between the two, while the phone shows the watch as being connected if I use the Android Wear app on the phone to disconnect and then reconnect it gets stuck re-connecting. Rebooting the watch lets it connect again.
On other occasions it has reconnected itself after a while.
EDIT:
PS. It is worth noting that the watch does NOT display the disconnect icon when this happens (usually if you walk out of range you get a little cloud with a line through it)
Azarin said:
My LG G watch seems to be encountering the disconnected error a fair amount as well. It is paired with a Nexus 5.
It appears the bluetooth link is going down between the two, while the phone shows the watch as being connected if I use the Android Wear app on the phone to disconnect and then reconnect it gets stuck re-connecting. Rebooting the watch lets it connect again.
On other occasions it has reconnected itself after a while.
Click to expand...
Click to collapse
I'm not getting extended disconnects; just failing to answer questions about half the time. If it fails, I can try again and it often works.
mickmel said:
Many times when searching via voice I'm getting a "disconnected" error with a list of other things to tap (like when you tap the clock to see a list of actions).
The phone is within a few feet, on a solid wifi connection. Droid Maxx from Verizon, stock ROM. Watch is the LG G Watch, including the update that came out today.
Any thoughts?
Click to expand...
Click to collapse
I just got my LG G Watch and paired it with my stock Moto X running 4.4. It paired no problem but I would say 95% of the time I get a disconnected message when doing a voice search. It is pretty infuriating.
Notifications still seem to come through and I still get served cards but voice search fails almost all the time. When I initially went from Wifi to 4g it worked for one search and then back to disconnected. It doesn't seem to be a phone problem since people on here are using a number of different phones. This is a bug that needs to get fixed ASAP by Google.
I am disappointed but hopeful they can get this quickly fixed.
I'm experiencing the exact same thing on my Gear Live. Its paired with stock S5. I just tried for like 5 minutes to get it to save a note and it would think for a while and then just disconnect.
mosi76 said:
I just got my LG G Watch and paired it with my stock Moto X running 4.4. It paired no problem but I would say 95% of the time I get a disconnected message when doing a voice search. It is pretty infuriating.
Notifications still seem to come through and I still get served cards but voice search fails almost all the time. When I initially went from Wifi to 4g it worked for one search and then back to disconnected. It doesn't seem to be a phone problem since people on here are using a number of different phones. This is a bug that needs to get fixed ASAP by Google.
I am disappointed but hopeful they can get this quickly fixed.
Click to expand...
Click to collapse
This is exactly everything I've noticed as well.. Seems to have gotten waaaaay worse after yesterday's update
Azarin said:
My LG G watch seems to be encountering the disconnected error a fair amount as well. It is paired with a Nexus 5.
It appears the bluetooth link is going down between the two, while the phone shows the watch as being connected if I use the Android Wear app on the phone to disconnect and then reconnect it gets stuck re-connecting. Rebooting the watch lets it connect again.
On other occasions it has reconnected itself after a while.
EDIT:
PS. It is worth noting that the watch does NOT display the disconnect icon when this happens (usually if you walk out of range you get a little cloud with a line through it)
Click to expand...
Click to collapse
Happens to me, too. Completely random though. Repairing the watch fixes it, but it is indeed annoying. We will have to wait for Google to fix this together with all the other bugs.
I found a small fix for this issue if anyone still needs help. I just set a tasker task to disconnect and reconnect bluetooth every hour. I haven't encounter this issue after doing so. It takes about 10 seconds and works great for me.
iHelp101 said:
I found a small fix for this issue if anyone still needs help. I just set a tasker task to disconnect and reconnect bluetooth every hour. I haven't encounter this issue after doing so. It takes about 10 seconds and works great for me.
Click to expand...
Click to collapse
Thanks, I'll give it a shot.
What about trying to reply using voice within a received Hangout or email? I'm always getting an error "Can't reach Google at the moment". Am I the only one? But if I select a default reply from the available list, I can reply with no problems...
iHelp101 said:
I found a small fix for this issue if anyone still needs help. I just set a tasker task to disconnect and reconnect bluetooth every hour. I haven't encounter this issue after doing so. It takes about 10 seconds and works great for me.
Click to expand...
Click to collapse
Nice idea, however it doesn't fix the issue for me (I bought Tasker specifically for this). Is this still working for you, or is it just improving things slightly?
Trouble is I don't use the voice search in public often (people stare!), but when I do want to show-off my watch's features, it fails - I look like a nob! Anyone found any sign that Google are looking at this? Does the Gear Live have this problem?
barkside said:
Nice idea, however it doesn't fix the issue for me (I bought Tasker specifically for this). Is this still working for you, or is it just improving things slightly?
Trouble is I don't use the voice search in public often (people stare!), but when I do want to show-off my watch's features, it fails - I look like a nob! Anyone found any sign that Google are looking at this? Does the Gear Live have this problem?
Click to expand...
Click to collapse
I found it only improves it a little, but it's not a full fix. Sometimes my watch works the whole day without connection problems and then suddenly multiple times in a short period of time.
I've read that the gear live has the same problem, so I guess it's android wear wide. Hopefully google is going to bring out an update soon which fixes all the annoying bugs.
barkside said:
Nice idea, however it doesn't fix the issue for me (I bought Tasker specifically for this). Is this still working for you, or is it just improving things slightly?
Trouble is I don't use the voice search in public often (people stare!), but when I do want to show-off my watch's features, it fails - I look like a nob! Anyone found any sign that Google are looking at this? Does the Gear Live have this problem?
Click to expand...
Click to collapse
Like stated by the previous post this is a simple fix. The only one that can truly fix the issue is Google. I have used this for a week and not had any issues relating to bluetooth disconnecting. One issue I noticed was Google Search sometimes breaks after using it multiple times in a short amount of time. I usually have to just force stop Google Search every 3 days also.
This has always been an issue I had even before Android Wear. If I used Google Now too much I couldn't get the "Okay Google" command to work. It seems this also happen when using wear too much. A simple force stop fixed it, but it is annoying when you want it to just work. Another thing I noticed was custom roms are having issues with Android Wear in my case.
Every time I use a custom rom on my Nexus 5 and try to use my LG G Watch I have constant disconnects and Google Search issues. Maybe Android Wear isn't playing nice with custom roms, but after using rooted stock for the last week I am experience very few issues compared to when using different custom roms. I noticed whenever I used a custom rom I got the "Connected, running sync loop". I have no idea if this causes the constant disconnects, but on stock with the simple "Connected" I have no issues.
I started out with the same problem using a Gear Live with a Sony Xperia Z1 Compact. The thing that fixed it for me was turning off battery saving mode on the phone - called stamina on the Xperia - that was turning off BT to save power. Now I rarely see the disconnected message.
Anyone found a solution to this problem?
My lg g watch also disconnects 90% of the time from my note 4. Anything from ok google to search or ser a reminder or or or
SIlvRav said:
Anyone found a solution to this problem?
My lg g watch also disconnects 90% of the time from my note 4. Anything from ok google to search or ser a reminder or or or
Click to expand...
Click to collapse
I have found this issue for Android Wear for my LG G watch R and Galaxy Note 3. If I use watchmaker, I have it set to vibrate twice upon disconnect and vibrate once upon connect. It is constantly disconnecting and immediately reconnecting (2 vibrations, followed immediately by a single vibration). This is extremely annoying and I see the same problem stated in the beginning, the voice search is constantly disconnected or cannot reach the server.
Cheers,
B.D.

Mate 10 Pro - GPS issues

Hi,
as soon as I bought this phone I am struggling with making the GPS receiver working properly in app such as Starava and Endomondo. Mate constantly drops the signal for couple of seconds. I tried different solutions such as:
apps->ignore battery optimization
manage the apps (running in the background) manually
Strava works without autopause
last used apps -> padlock is set to locked
Below you will see a compare of a proper signal (red) and Mate's (blue) with a lot of losses.
Please help as it is very annoying 'feature'.
Nobody?
Huawei Mate 10 GPS performance is poor
Cameyo said:
Nobody?
Click to expand...
Click to collapse
I have exactly the same experience. My (new) Mate 10 Pro has far worse GPS accuracy than my (previous) Galaxy S7 Edge.
Tried many possible solutions, nothing helps. Shame on you, Huawei!! :crying:
I don't use these apps but I remember the same complaints about Mate 9. A joke that it hasn't been sorted out yet!
Mate 10 lite garbage gps
Same issues with endomondo amd my huawei mate 10 lite.... Gps loosing signal when running in the park, but no issues with gps driving applications... Instead of 3.14 km it shows me only 2 km, it is loosing signal every 5 mins.
Same thing here, bought mate 10 pro (bla-l29) 3 weeks ago and besides its great camera and other stuff, this problem with gps and strava is so annoying.
Here are two pics, first from a bike ride, with numerous spikes, and other, walking, where red line is gps track from the mate and cyan is actual track that I was walking.
I have sent a question today to the official croatian huawei forum, but I don't expect some remedy. Maybe a new Android Pie and EMUI 9,which is scheduled to arrive in my country on 14 December fixes that issue, otherwise I'm thinking on selling the thing, because I'm quite often on my bike and trekking in nature.
Edit: Since I'm a new member, can't post external links to pics, sorry.
My mate 10 works great with GPS.. In the car or walking. Even in the train..
Is GPS dropping only while the screen is off (or app in background)? If rooted, the solution is to disable the Power Genius app using either Titanium Backup or Service Disabler (and then reboot). If not rooted, you can try via ADB but I'm not sure it will work.
"Ignore Battery Optimization" affects Android's built-in battery optimization. Power Genius is responsible for Huawei's built-in battery optimization features - which don't increase your battery life but do cause issues with GPS, music playback, screen brightness, etc.
thref23 said:
Is GPS dropping only while the screen is off (or app in background)? If rooted, the solution is to disable the Power Genius app using either Titanium Backup or Service Disabler (and then reboot). If not rooted, you can try via ADB but I'm not sure it will work.
"Ignore Battery Optimization" affects Android's built-in battery optimization. Power Genius is responsible for Huawei's built-in battery optimization features - which don't increase your battery life but do cause issues with GPS, music playback, screen brightness, etc.
Click to expand...
Click to collapse
There are two things which can be done, one is to manage apps manually (via battery settings) and other with that "Ignore Battery Optimization".
So you are saying both are standard android features, nothing to do with Power Genius service?
Yesterday I've allowed "Ignore Battery Optimization" for Strava, restarted the phone (as suggested on many places after this), and went for a short test ride. It seems that there are definitely less spikes than before, but still there were two of them on a 5km trip. And the GPS accuracy is still not satisfying. The screen was locked, as was always on my previous Samsung A5 and all iPhones before that.
I've tried disabling the lock screen few days before, but during walking. Half trip the screen was on, half off. I didn't notice any difference. During walking there were no spikes, but the accuracy was very bad, the track had two very strange off-paths in order of 40-50 meters.
Static accuracy of GPS is always ok, in several apps. But dinamic gps tracking is bad.
I'll try Endomondo, other app for the same purpose and post results here.
"Ignore Battery Optimization" is an Android feature.
"Launch" (manage apps manually) is an EMUI feature.
"Power Genius" is a separate EMUI feature. Amongst other things, it uses an algorithm to determine what apps and processes should be killed off when they are in the background. But it is artificial intelligence that is not intelligent - when you are streaming music, it kills processes necessary for bluetooth music playback. If you use an app like Google Maps, it gets killed off like clockwork after so many minutes in the background.
There are sometimes ways to manipulate it, i.e. I think it looks at how long a process has been running, how many apps are running in the background, whether the phone is being charged. But generally, there is no downside to disabling it if you are rooted.
I am relatively new to Huawei, Power Genius is the main reason I would never be inclined to recommend a Huawei device to a lay person who did not intend to root it, or what not.
Oh, bummer.
Well, I'll test some more, with Strava and Endomondo, and if nothing improves, I'll see whether to consider rooting, or that ADB thing, or replacing it for Samsung S8.
I don't have experience with rooting, but I jailbreaked every iPhone I had, my occupation is software developer, recently changed the firm and now beginning to develop under Android studio, so i think I could do that. But I'm afraid it could be pure GPS problem, either hardware or software, I'm not sure.
If I leave the screen on during the ride, and problems persist, can we exclude Power Genius and blame GPS receiver or code responsible for it?
The phone has a problem with the GPS, thats for sure. Even after the Pie update, nothing changed. I personally had no issues with killing apps, but overall GPS accuracy is very poor. For example, Im walking down the road on a left sidewalk, google maps says Im on the right side of the road. Thats about 10 meters away ! And in a open space with no obsticles. Definitely a HW issue

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