Database Users

Frustrating battery problems

/I posted this in another thread but I'm desperate for help at this point.
At one point last week, my Nexus 7 had been running on eight hours from a full charge, screen had only been on for 1:15 and Android OS had kept the device awake for almost five hours, and used 50 minutes of CPU total. My battery was at 71%.
After receiving advice to do a factory reset, I did so on Friday and my battery life improved dramatically over the weekend. Android OS was using a much less percentage and keeping the device awake less. My battery lasted over two days with +4 hours of screen time. But once I commuted to work this morning, my problems started again. Android OS' percentage used and time kept awake shot up and my battery is down to 61% in 22 hours (1:11 of screen time) and Android OS has kept the device awake for over 6 hours.
Is this an operating system problem? Does anyone else commute to work and use Google Now for public transit updates? I have Latitude updating off but otherwise all GPS, etc. is turned on.
I am absolutely baffled and would love some help. Thanks in advance.

crazygameofpoker said:
(...) I have Latitude updating off but otherwise all GPS, etc. is turned on. (...)
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Click to collapse
That seems to be the culprit. Try turning ALL options in the Location services off (Google's location service, GPS satellites, Location & Google search) and turn them only on when you need them.
This did the trick for me.
Otherwise use the tools CPU Spy and BetterBatteryStats (both available in the Google Play store) to get a better idea what exactly is causing the battery drain on your device.

Cybermancer said:
That seems to be the culprit. Try turning ALL options in the Location services off (Google's location service, GPS satellites, Location & Google search) and turn them only on when you need them.
This did the trick for me.
Otherwise use the tools CPU Spy and BetterBatteryStats (both available in the Google Play store) to get a better idea what exactly is causing the battery drain on your device.
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Click to collapse
Thanks for the response. That's probably my last resort. I mean, I bought this device because of features on Jelly Bean such as Google Now, which relies heavily on location services, and I have to turn all of them off? That disappoints me.
It's interesting to me that I had all of these services on at home over the weekend, yet it did not have this effect on my battery. Only because my device leaves the house should it freak out. That's a serious flaw.

crazygameofpoker said:
Thanks for the response. That's probably my last resort. I mean, I bought this device because of features on Jelly Bean such as Google Now, which relies heavily on location services, and I have to turn all of them off? That disappoints me.
It's interesting to me that I had all of these services on at home over the weekend, yet it did not have this effect on my battery. Only because my device leaves the house should it freak out. That's a serious flaw.
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This may or may not help, but I too was having battery problems but narrowed it down to being only when I was away from any Wi-Fi connection whether I was connected or not. I think there is a bug whereby if the tablet cannot establish your location from nearby Wi-Fi access points, rather than giving up it just keeps on trying to the detriment of your battery. I solved this issue by using an app called Automateit to instruct my Wi-Fi to turn off when the screen is off (as it would be the majority of the time while travelling). These kinds of apps allow all kinds of qualifiers, for example my Wi-Fi doesn't turn off if Spotify is in focus as I am streaming music using Wi-Fi. Give this a go and see if it helps.

akalias1981 said:
This may or may not help, but I too was having battery problems but narrowed it down to being only when I was away from any Wi-Fi connection whether I was connected or not. I think there is a bug whereby if the tablet cannot establish your location from nearby Wi-Fi access points, rather than giving up it just keeps on trying to the detriment of your battery. I solved this issue by using an app called Automateit to instruct my Wi-Fi to turn off when the screen is off (as it would be the majority of the time while travelling). These kinds of apps allow all kinds of qualifiers, for example my Wi-Fi doesn't turn off if Spotify is in focus as I am streaming music using Wi-Fi. Give this a go and see if it helps.
Click to expand...
Click to collapse
Thanks. When I'm at work it stays connected to the same WiFi access point as far as I know.

Here's an update to the situation: I looked at my data usage over the last few days. Over the weekend, Android OS used virtually no data. Since then, it has used about 50 MB of data in the background. I work at a university so maybe it's trying to connect with other access points on campus even when I'm in my office. Any ideas? Thanks.
Edit: At work, the down arrow on my WiFi signal is constantly on, like it's always doing something. At home, not.

WIFI turns on and off constantly

when turning my wifi off it seems it goes into some weird loop of turning on and off constantly by itself, it doesn't seem to be trying to connect just flipping the wifi switch on and off none stop.
noticed it because i had a huge battery daring overnight and while trying to fix it i saw the switch going off and on all the time.
when turning it back on it seems to connect normally .
did a network setting rest but it did nothing ...
I'm guessing a factory rest will fix the problem but I'm hoping to avoid such a overkill solution :crying:
does anyone else had this problem and can help me fix it?
thanx!

avivzamir said:
when turning my wifi off it seems it goes into some weird loop of turning on and off constantly by itself, it doesn't seem to be trying to connect just flipping the wifi switch on and off none stop.
noticed it because i had a huge battery daring overnight and while trying to fix it i saw the switch going off and on all the time.
when turning it back on it seems to connect normally .
did a network setting rest but it did nothing ...
I'm guessing a factory rest will fix the problem but I'm hoping to avoid such a overkill solution :crying:
does anyone else had this problem and can help me fix it?
thanx!
Click to expand...
Click to collapse
This was on a new custom rom ?
Or did it just happend on a rom that have worked perfect for days?
And have you seen which app or system app been casuing the drain?

LyLu said:
This was on a new custom rom ?
Or did it just happend on a rom that have worked perfect for days?
And have you seen which app or system app been casuing the drain?
Click to expand...
Click to collapse
original samsung rom.
just happened (i have the device for a a while everything was fine) its the android system that drains the battery in the battery status.
when i leave the wifi on it stops and works fine ...

Have you turned off ''Keep Wifi During Sleep''? I know this can drain battery.
It's not so easy to troubleshoot on an orginal none rooted phone.
You can try clearing dalvik and cache.
Turn it off and then on holding power and vol down button, then clear cach/dalvik and restart.

Try uninstall update beaming service for samsung then restart
If still persistent try uninstall update microsoft onedrive and skype then restart, just in case
I found it after factory reset (forgot internal data backup :crying and update all apps, this problem occuring after the last 3 updates (beaming, onedrive, & skype) which more suspect beaming service update make that problem

Your not alone
You're not the only one who suffer from this exact problem, on Friday or Saturday the same problem started occurring with my phone too, WiFi turns on and off in a loop and huge battery drain!
I saw an increase of 6% of battery drain per hour, so I ended up on 9% total drain every hour. :crying:
I have original Samsung Rom and phone worked prefect until now, no settings or apps installed before this happened either.

What rom version are you guys on?

I'm having the same issue. However, I'm on PhoenixX Rom. Major battery killer and has only just started happening within the past few days.
Since my phone has been unplugged, 3 hours ago, looking at BetterBatteryStats, It is showing com.google.android.gms as having quite a LOT of wakeups. 40 per hour (everything else is about 2). Don't know if this is normal as I don't remember it before the Wifi issue.
Looking into what the wake ups are caused from, Location and heartbeat were the major culprits. So i have turned of WIFI scanning when not on and also the body sensors for Google Play. We shall see.

LyLu said:
What rom version are you guys on?
Click to expand...
Click to collapse
See attachment.

Easy fix. Just disable Wi-Fi scanning.

the_scotsman said:
Easy fix. Just disable Wi-Fi scanning.
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Click to collapse
its not a fix at all . it dosnt scan for wifi , just turning it on and off non stop.
like pressing the light switch agin and agin

I had this after installing "GoodLock" software from Samsung! Uninstalled and everything is ok

same here, just noticed I wasnt on Wifi and the switch is just flicking on and off by itself. Standard S7 with all the updates installed

Been struggling with the same for some days (4 - 5) I haven't been able to get exactly whats triggering this. I'm on stock rom with root. I've reinstalled firmware clean again and re downloaded my apps but it is still happening randomly. Some times after a few attempts to switch wifi on (even when it is toggling by itself) it manages to keep on. Sometimes restarting makes it work again. One thing I'm almost certain its that this usually happens after I turn wifi OFF and then try to turn it back on.
It's been crazy and the phone starts to overheat after a while off this on-off loop.
Any ideas?

its very wierd it started to all of us in the past few days-weeks . seems like samsung has a bug they need to hurry up and fix.

AT&T just pushed out the October Security update for the S7 family, I'm guessing something that came along with it is creating the problem.

mine did a software update last week and I've been away in airplane mode so it could have started then. I've just disabled scanning and that seems to have got round the issue and I'm now connected to WifI

I'm not sure whether it is a Samsung Issue or a Third party one... It is true that something recently affected all of us, but as far as I know, it could be a third party app that wasn't well developed for our phone.

I've noticed the same problem on my phone and it's also only started up in the last few days. On stock Sammy rom, unrooted. Will be monitoring this thread to see if the experts here can narrow down the culprit.

I had the same issue and I was able to stop the toggle by turning off the wifi scanning in Location - Improve Accuracy - WiFi scanning. It's a fix for now. I think it may be an app that may have been updates that is persistently looking for location updates.

Wifi will not reaquire home network and Bluetooth LE does not appear to work on Pie

I have searched here and other forums a bit with no real luck finding a real answer.
Before Pie I believe my PH-1 was working fine. Since updating to Pie it seems if I leave the house the phone will not automatically reconnect to my home network. I have played with a number of setting recommended with Wifi, Location and Battery with no luck.
From what I have picked up Pie can be problematic, not sure if these issues are being worked on in the background?
I also think there may be an issue with WIfi distance, but have not confirmed this 100% yet.
I have a Bluetooth LE interface that I recall working before Pie, but it does not appear that the phone can find the Bluetooth LE interface now.
Any help, suggestions or solutions would be appreciated.

jfoj said:
I have searched here and other forums a bit with no real luck finding a real answer.
Before Pie I believe my PH-1 was working fine. Since updating to Pie it seems if I leave the house the phone will not automatically reconnect to my home network. I have played with a number of setting recommended with Wifi, Location and Battery with no luck.
From what I have picked up Pie can be problematic, not sure if these issues are being worked on in the background?
I also think there may be an issue with WIfi distance, but have not confirmed this 100% yet.
I have a Bluetooth LE interface that I recall working before Pie, but it does not appear that the phone can find the Bluetooth LE interface now.
Any help, suggestions or solutions would be appreciated.
Click to expand...
Click to collapse
When in doubt... A factory reset gets everyone on the same page...
If not... Delete the /sdcard/Android/ directory and wipe data in TWRP and see if that fixes it

Just wanted to update this thread that I ended up resetting phone to factory defaults and the Wifi connection issues seem to have been resolved. Now if I can find out why the charging LED indicator is no longer working. Seems after a brief search this may be an issue with Android Pie/9?

jfoj said:
Just wanted to update this thread that I ended up resetting phone to factory defaults and the Wifi connection issues seem to have been resolved. Now if I can find out why the charging LED indicator is no longer working. Seems after a brief search this may be an issue with Android Pie/9?
Click to expand...
Click to collapse
LED works for me. Did you turn it on? I think it's in display or notification settings

The charging LED worked fine before the Pie/9 update. If there is a place for changing/setting this feature I have looked and looked and cannot find it.
I believe I found it in earlier Android versions but for the life of me, I cannot find a setting.
Anyone have some suggestions?

Not sure why I was not able to find the Battery Charge setting. It was probably because it was at the top of the screen and I must of have started to scroll down immediately.
Access your Settings Menu
Select Apps & Notifications
Select Notifications
Turn on Battery Charging Light

GPS lock issues with Android Auto?

Anyone else having an issue where when using Android Auto, the Waze app won't get a correct location until I switch to the Google maps app first and then go back and everything is fine. I've tried reinstalling all apps involved and still same outcome. Not deal break but still annoying

Yes, I do the exact same thing to "fix" the problem. I originally had the problem, it went away for a period of time, now it's back again. It seems Waze wants to use GPS but is in the background/goes to sleep - due to Android auto where the phone screen is off.
As a side note, my Waze also looks like it's got green hues everywhere now both in day and night modes. It makes the map background seem less crisp around roads and road names.

Same here for waze

This only happens to me when I connect the device when its asleep.

Dark Nightmare said:
This only happens to me when I connect the device when its asleep.
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Click to collapse
Hmm I've only ever connected it while its asleep. I'll try and see if connecting with it awake fixes it.
I've also tried having Waze and android auto being ignored by the battery optimization and still no luck.

I have also this problem... Still... It's very annoying as Google maps is working so I guess it has something to do with waze itself and not Android auto. I hope they fix this problem. I use waze for speedtraps etc...

What is turning off my GPS / Location Service?

When I go to use Google Maps for navigation, I often get the message "To continue turn on device location which uses Google's location service". The problem also affects ViewRanger, an app I use for walking. GPS appears to turn off during a walk so I lose the track of my route. In this case the message is "GPS is disabled in the settings. Please enable it."
I recognise this happens after the phone has been "asleep" for a while but have not been able to measure how long it must be asleep before the problem arises. I think it is at least 30 mins.
It feels like a "battery saver" problem, but I can't see any obvious power saving setting to turn off. ViewRanger is set in App Power-saver to have no optimisation policies.
I have had my Axon 7 since Jan 2018 and this problem has only occurred in the last few weeks. My model is A2017G on stock Oreo B03 and unrooted. The problem did not emerge when I first moved to Oreo. It may have started when I moved to B03 though I think GPS was fine for a while after I moved to B03.
Something is turning off location services in the background; how do I find out what it is? Is there some sort of log I can read? What other solutions are there? Many thanks in advance, Evan

I moved from stock Oreo B03 to B04 (via B02) and wiped the cache. All now seems to be well; ViewRanger recorded a 4 hour track with no problem yesterday. Slightly strange though as I had previously wiped cache while on B03 and found that didn't fix my problem.

Too good to be true
grantem2000 said:
I moved from stock Oreo B03 to B04 (via B02) and wiped the cache. All now seems to be well; ViewRanger recorded a 4 hour track with no problem yesterday. Slightly strange though as I had previously wiped cache while on B03 and found that didn't fix my problem.
Click to expand...
Click to collapse
It did all seem a little too good to be true and, sadly, Location Services again began "turning off automatically" only a few days after my upgrade to B04. I have attached 2 screenshots from the notification log for when I started recording a route in ViewRanger at 15:07 and again 3 mins later at 15:10 when tracking appeared to stop. The logs mean nothing to me, so any insight would be very welcome.
In the meantime, I uninstalled ViewRanger, deleted all ViewRanger directories, restarted the phone, re-installed ViewRanger and wiped cache again. After that, for now at least, Location Services are again behaving.
As all this appears to point the finger at ViewRanger, I will raise direct with the application owners too.

grantem2000 said:
As all this appears to point the finger at ViewRanger, I will raise direct with the application owners too.
Click to expand...
Click to collapse
ViewRanger, support were very responsive and supportive. They made a convincing case that the problem is not caused by ViewRanger, not least as the app has no capability to turn off Location Services.
But something is still turning off Location Services when the phone goes to sleep. How can I tell what is doing this?
In the meantime, wiping cache solves the problem for a few days, but, so far, it has always come back.

I have the same issue and that's why I think this phone's gps is useless. I find this gps not in accurate way to detect the coordinates even in all previous firmwares (nougat, all ver of oreo)
The auto turned off gps services maybe the case of software, but I think the hardware is bad either.
This is the worst part as I work using GPS a lot but I still love this guy's music features. I ended up using secondary phone/tablet to run some geographical apps, sad cant have em running in one phone only.
Update: my GPS get fixed on B04 with locked bootloader, it seems fine and fast to get POI. It's usable now. Guess the previous rom has bugs on GPS or it's broken by other apps I used before