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[Q] Phone charges intermittently and bad battery life

My Z3 is fairly new to me, just got it on Friday. So far love the phone. Only problem is with charging... and battery life.
So far I'm not getting anywhere close to advertised battery life. I hardly used it at all yesterday and took it off charge around 11:00am from 100% and when I put it on charge at 1:00am it was at 23%. I had no phone calls, played a game for about 20 minutes, and did some facebook messaging in the afternoon for a little bit. Didn't watch no movies, didn't stream any media... very odd. It was paired with my Moto 360 all day however... could that kill the battery that fast? Stamina mode was not activated.
The biggest issue however has been charging. I turned the phone OFF when I put it on charge at 1:00am and this morning when I turned it on it still read 23%. When I plugged the charger in before I went down for bed the phone lit up saying it was connected and receiving power and the light turned orange. Same thing happened Friday night when I put it on charge, except for the phone was ON, and it dropped from 30% to 20% overnight while in airplane mode.
I used two different chargers both nights.
During the day the charger I used Friday night seemed to work fine as it charged it up from 8:00am till 11:00am Saturday morning. It's a Blackberry Playbook charger, so it puts out a lot more juice (don't have it next to me so don't know the spec), and it charged up my tablet just fine. The cable I used to charge it overnight last night is currently charging it as I type this. So why won't it charge overnight?

I had the same issue on my old Samsung Galaxy S3 Neo, but I resolved switching charger and plug.
Did you try changing plug?

Yes I've used three different cables

Might be a long shot, but check that your WiFi isn't on all the time, either when screen off and sleep mode, or always scanning and sending...WiFi advanced settings...that can cause rapid drain..also Sony products are very particular in charge mode, and will only charge fully and properly if using Sony chargers...best fit is to use charger supplied...had same issue with my S4, and Nexus 7..hope this helps
Sent from my Lenovo B6000-F using XDA Free mobile app

wired335 said:
My Z3 is fairly new to me, just got it on Friday. So far love the phone. Only problem is with charging... and battery life.
So far I'm not getting anywhere close to advertised battery life. I hardly used it at all yesterday and took it off charge around 11:00am from 100% and when I put it on charge at 1:00am it was at 23%. I had no phone calls, played a game for about 20 minutes, and did some facebook messaging in the afternoon for a little bit. Didn't watch no movies, didn't stream any media... very odd. It was paired with my Moto 360 all day however... could that kill the battery that fast? Stamina mode was not activated.
The biggest issue however has been charging. I turned the phone OFF when I put it on charge at 1:00am and this morning when I turned it on it still read 23%. When I plugged the charger in before I went down for bed the phone lit up saying it was connected and receiving power and the light turned orange. Same thing happened Friday night when I put it on charge, except for the phone was ON, and it dropped from 30% to 20% overnight while in airplane mode.
I used two different chargers both nights.
During the day the charger I used Friday night seemed to work fine as it charged it up from 8:00am till 11:00am Saturday morning. It's a Blackberry Playbook charger, so it puts out a lot more juice (don't have it next to me so don't know the spec), and it charged up my tablet just fine. The cable I used to charge it overnight last night is currently charging it as I type this. So why won't it charge overnight?
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Hey buddy, I have had the EXACT same problem.
I have watched tons of reviews for this phone on YouTube and users feedback on how great battery life is, and I have owned this phone for a week but I was struggling to make it to 4 1/2 hours of on screen time and the phone would take forever to charge. But just tonight, like literally a couple of hours ago, I noticed my phone charging was odd. Phone was charging till 99% then it would drop to 97% while still charging then go up to 98% then back down to 97% then back up to a 100% in all taking about 30 min. Now, I can tell, battery life seems to be much better. Not sure if the phone was calibrating itself but I have been using the phone heavily since I took it off charge nearly 3 hours ago and I have more than an hour of screen time with 86% left. Before I would be around 73% probably. So give it some time, try using the phone till it dies completely then recharge it and repeat the process 3-4 times, I think the battery will calibrate itself.
Edit: Also, I went to settings, power management and app power consumption and noticed that a couple of apps that I barely use are the ones using the most background data so I uninstalled them as well. But give it time, the phone will eventually go to normal and give you that insane battery life. Also use the oem USB cable and wall plug, I have been using a cheap 3rd party one.
Sent from my D6603 using Tapatalk

Why don't you try without pairing with the Moto 360. Check the battery life without pairing to your smartwatch for a day. We can at least exclude the culprit. IF its the phone, then get a replacement done.

yes, I'm going all day today without having the Moto 360 paired up. already after two hours off charge and hardly any on screen time and it's down to 85%. Not even my iphone 5s drained that fast and usually I was out of power by lunch on that thing (one of the reasons I grabbed the Z3)
I charged it off the factory charger last night and with the phone off and that seemed to work, it charged up nicely this morning.
We will see what happens.... seems like Lifelog draws a lot of power according to the battery stat meter, gonna uninstall that and see if that helps.

so the phone died off at 8:30 or so last night to 0%. from about 3:30-7:00 the phone was untouched, not paired to my watch, and wifi/bluetooth were turned off. It dropped from about 50% to 30% during that time. From about 8:00-8:30 I played a game to just kill it, when I started playing battery was at 21%
I had stamina mode on from 9:00am till 7:00pm yesterday too. This seems very strange to kill that fast.
Even this morning, took it off the charger, confirmed 100% charge, did my morning routine (without touching the phone) and even after 30min it dropped to 90% already.
There has to be something robbing power...
Lifelog is off. BBM is on. stamina mode only allows BBM and push email through. I made sure BeWeather is setup to only refresh on screen unlock.
the good news is... charging is working!

Just to make sure it isn't BBM i would suggest you don't allow it for stamina mode. What other apps have you installed? They might be draining too..

crazymister said:
Just to make sure it isn't BBM i would suggest you don't allow it for stamina mode. What other apps have you installed? They might be draining too..
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I'll shut BBM off for today and see what happens.
EDIT: you also asked what other apps I have installed...
allcast
adobe reader
android wear
angry birds transfomers
Rogers wireless bloatware
google calendar
beweather pro
cam scanner
google camera
chromecast
cinplex odeon
dopbox
edmonton journal
edmonton public library
facer
feedly
facebook
facebook messenger
google hangouts
kijiji
instagram
flickr
google fit
fuel buddy
golden hour
indigo books an dmusic
google maps
passwallet
adobe photoshop
edmonton oilers
quadrant standard
shazam
sleep like adroid
snapseed
snapchat
guitar tabs
ultimate guitar tools
swiftkey
tapatalk
bank app
scoremobile
xbox one smartglass
various games
Yesterday, 2.5hr screen on time, had the screen dimness at aprox 20% all day, no phone calls, no gaming, no bluetooth aside from from my 20min commute to and from work, wifi at home from 6:00-7:30. got from 6:50am till 8:30pm until the phone died. Was on stamina mode.
Took it off the charger this morning and in 20 minutes lost 10%.
I'm ordering a replacement phone as this seems very high.
I'm seeing people use their phone pretty close to max settings without stamina mode in the battery thread I was reading yesterday (and I will probably take this conversation there), and they are getting much longer life it seems than I am.

I've been having issues on my Bell Canada Z3 as well (I've had it for 3 weeks). Battery Stats was blaming it on GMail (25%). I wiped GMail's data and cache today, so I'm hoping that will help. I also noticed a couple of times this week that my phone was running very slow and starting to get hot. In that scenario /usr/sdcard seemed to be the culprit. Got out of that by unmounting and remounting the sdcard. Seems really unstable in general, I hope Lollipop fixes things.

SERIOUS Battery Drain

i know there are a lot of other threads out there, but I haven't found one that talked about the problem deeper and has a fix. anyways, I'm experiencing a serious battery drain where I charge my phone up to 100, unplug it in the morning, go to school and leave it in my pocket for 2 hours, and it ends up being 70-80% and the screen on time isn't even on the battery stats because I've barely used my phone to have it show up. As im typing this on my phone, ive even lost 2%. Is anyone experiencing something similar and is there a fix for this? At 33% now, according to the battery usage, cell standby is at the top of the list with 10% and screen on time is 25 minutes . Thanks so much

Please post some screenshots of battery stats and someone may be able to help
Sent from my SM-G920V using Tapatalk

My phone is the same way. Even with the latest update that made cell standby way better where it sits at 1-3% my phone drains like crazy. It's been off the charger for 3 hours and 1 hour of screen on time and it's at 57%. They need a bigger battery in the s7.

Check to see if you have a VPN app installed, Firefox, Candy Crush (or other King app), or a weather app. Many use mdnsd that eats power. King apps send data all the time. And there may be some adware that you have that is eating power. Hope this helps...
Sent from my SM-G920V using Tapatalk

Battery Drain
I have had the same problem. With the earlier update I had the issue with (what I consider) excessive drain caused by cell phone standby. With the latest update cell phone standby has taken a back seat to Android System. Here is a screenshot from today. As you can see Android System has more than twice the percentage of anything else. I reset the phone a couple of days ago but that had absolutely no effect. Went to a local Verizon store to complain which naturally went nowhere.

brw9100 said:
I have had the same problem. With the earlier update I had the issue with (what I consider) excessive drain caused by cell phone standby. With the latest update cell phone standby has taken a back seat to Android System. Here is a screenshot from today. As you can see Android System has more than twice the percentage of anything else. I reset the phone a couple of days ago but that had absolutely no effect. Went to a local Verizon store to complain which naturally went nowhere.
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I did a factory reset in recovery wiped cache twice and rebooted I have had much better battery. 20-30% higher when I leave work. I also kept WiFi calling turned off not sure if that was the drainer.

poor battery life?

Hi,
I received my gear S2 classic yesterday but I don't seem to be getting the battery life of 2 days. I took it off charge this morning at 11:30 am and it's now 12 noon and it's down to 89%. Is this normal? I've turned off the auto heart rate monitor and NFC and Wifi. It's constantly connected to my note 4 and the brightness is set to 5.
I've had a fair few notifications and haven't really used apps on it today so far but seems to be draining quicker than what I was expecting, just wondering if this is normal or not? I understand it's a small battery but when it's supposed to get 2 days and it doesn't seem like I'd get one day out of it if I was to take it off charge early in the morning like at 8 AM for example.

In 30 min it drained 11%? Seems like a lot. Restart it perhaps? I have wifi off, s voie off, and screen brightness set to 5 as well and it lasts 2+ days. I'd give a couple more days, if it doesn't improve then I would exchange it.

nightf0x said:
In 30 min it drained 11%? Seems like a lot. Restart it perhaps? I have wifi off, s voie off, and screen brightness set to 5 as well and it lasts 2+ days. I'd give a couple more days, if it doesn't improve then I would exchange it.
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Click to collapse
Think it's okay (ish) been off charge now for about 11 and a half hours and it's at 46% though this still is only barely a day of battery life not 2. Should be able to live with it though I normally put my phone on charge at night when I go bed anyway regardless of the charge I have left and I do the same with the S2. Speaking of phone is there anything I can do with it's battery life? Having bluetooth on 24/7 really takes a hit on my battery life on my note 4. Is there anyway I could put it into some kinda low powered bluetooth mode so maybe it's not quite as fast but still some kind of connection?

mikesaa309 said:
Think it's okay (ish) been off charge now for about 11 and a half hours and it's at 46% though this still is only barely a day of battery life not 2. Should be able to live with it though I normally put my phone on charge at night when I go bed anyway regardless of the charge I have left and I do the same with the S2. Speaking of phone is there anything I can do with it's battery life? Having bluetooth on 24/7 really takes a hit on my battery life on my note 4. Is there anyway I could put it into some kinda low powered bluetooth mode so maybe it's not quite as fast but still some kind of connection?
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Click to collapse
I had pretty bad battery life with watch connected too. It turned out it was a misbehaving app with bluetooth, GasBuddy in mycase. Uninstalled it and battery life went back to normal. I suspect something similar may be happening in your case.
Sent from my SM-T320 using Tapatalk

nightf0x said:
I had pretty bad battery life with watch connected too. It turned out it was a misbehaving app with bluetooth, GasBuddy in mycase. Uninstalled it and battery life went back to normal. I suspect something similar may be happening in your case.
Sent from my SM-T320 using Tapatalk
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+1 for the misbehaving app as the likely cause. For comparison: My Classic goes on at 9am and off around 9pm with about 60% left, consistently. Connected with bt...Wifi off and max brightness all day.

Battery App Misbehavior
sefrcoko said:
+1 for the misbehaving app as the likely cause. For comparison: My Classic goes on at 9am and off around 9pm with about 60% left, consistently. Connected with bt...Wifi off and max brightness all day.
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How did you determine the app causing issues? Do you have the clock always on or gestures on? it seems i am draining awfull fast too. Took off charger at 7am and now at 10 i am at 85% is this normal?

mapobean said:
How did you determine the app causing issues? Do you have the clock always on or gestures on? it seems i am draining awfull fast too. Took off charger at 7am and now at 10 i am at 85% is this normal?
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Click to collapse
That drain seems a little fast to me but not too bad compared to the experience of others posted here.
Usually you'll notice the drain soon after installing troublesome apps, so the offender is likely one of the last few you installed. To fix this I just uninstall the last few apps I downloaded and test from there. If the battery issue is still not resolved after a while of usage, then I uninstall the ones before it. I don't know of any other way to test on the Gear S2 like we do on android phones (e.g. with bbs, wakelock detector, etc.).
The battery life I mentioned for my Classic is with gesture mide turned on, and always-on mode turned off.

Battery problems after s3 update

Hi, I installed the S3 update over the air to my Korean S2 a couple of days ago. Everything seems fine except for issues with the battery. I Can take the watch of the charger after an overnight charge and wear it all day, powering it off before i go to bed in the evening. When i shut it down the charge can be over 50% but when i power it back on in the morning the charge is just over 10%. If i leave it powered on but not on charge the percentage will increase over the next couple of hours back to just under 50%. The problem is i can never be sure what the true state of charge is, so i am unsure whether it will last the day.
Anyone else having this issue or know how to fix it?

I have problem with battery. Battery is discharging really fast.

That's weird. My battery life seems pretty good. My watch has been off the charger for 5 hrs and I'm still at 94%
Sent from my ONEPLUS A3000 using Tapatalk

Yeah, it looks like that first 2-3 charging cycles were not good, but today I have really good battery life. ... So my problem is solved.

On the old firmware I could wear it 16 hours and put it back on the charger with over 60% left. Since the update I am down to 20% in four hours. I've done 2 hard and one soft reset to no avail. The battery thing on the phone app says its my watchface and I should use a dark one but I am. This, frankly, is a show stopper. I can't recharge 2 or 3 times a day. Any idea how to reinstall the R734XXU2DPG1 firmware? That worked.

Apparently a couple of recharges fixes the battery issue. Don't know why but it does. So far at least.

Hi
I just updated my gear s2 classic yesterday with the new ota, my battery doesn't even last for 2 hours now, before it gave me 1_1.5 days. In battery usage it shows 22% usage by contacts and 19% watchface even though I'm using the stock with no customization and even the background is same as default for menus.
I've denied the permission for gear plug in for contacts even then the drain is too fast.
How can we fix this, any ideas.

Question Overnight battery drain issue

I am totally in love with my GW4 (Classic 46mm Model) as it's my first smartwatch but there is still one thing that bothers me, the unreasonable battery drain overnight. I charged up my watch last night, put the watch on my desk, came back in the morning and saw about 10% battery drain in 8 hours! That's insane considering the fact that I've disabled everything and even enabled battery saver, I thought after all these years I can finally get a full fledged Wear OS smartwatch and be happy with the battery but Wear OS is still the same OS as it was.

I've got the same issue. I thought it was the sleep tracking but I was wrong

And the funny fact is that the battery life is reasonably good when you actually using the watch, but as soon as you put it away it starts to drink juice weirdly, looks like there is no deep sleep kicking in no matter what, even disabling everything and enabling airplane mode.

UnknownWolf said:
I am totally in love with my GW4 as it's my first smartwatch but there is still one thing that bothers me, the unreasonable battery drain overnight. I charged up my watch last night, put the watch on my desk, came back in the morning and saw about 10% battery drain in 8 hours! That's insane considering the fact that I've disabled everything and even enabled battery saver, I thought after all these years I can finally get a full fledged Wear OS smartwatch and be happy with the battery but Wear OS is still the same OS as it was.
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Click to collapse
Which version/size do you have? How many times have you fully charged the watch? I have Classic 46mm. My battery drains 4 -6 % during the night. I have watch on my wrist when I sleep. I always put watch into bedtime mode before I go to bed. I don't disable anything or put on power saving mode. I think the bedtime mode simply turns off notifications and stops watch face from automatically turning on.

fliptwister said:
Which version/size do you have? How many times have you fully charged the watch? I have Classic 46mm. My battery drains 4 -6 % during the night. I have watch on my wrist when I sleep. I always put watch into bedtime mode before I go to bed. I don't disable anything or put on power saving mode. I think the bedtime mode simply turns off notifications and stops watch face from automatically turning on.
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Click to collapse
Oh sorry for not mentioning it, It's the same as yours classic 46mm. I have the watch for almost 1 week now but I always charge it whenever it gets to 50% so it's a half cycle charge. Do you think I should let it fully discharged and recharge it for a full cycle?

I have the non classic 44mm LTE and I have always used bedtime mode and I've tried nothing all the way to disabling everything and enabling battery saver and still lose quite a bit at night

UnknownWolf said:
Oh sorry for not mentioning it, It's the same as yours classic 46mm. I have the watch for almost 1 week now but I always charge it whenever it gets to 50% so it's a half cycle charge. Do you think I should let it fully discharged and recharge it for a full cycle?
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Click to collapse
It seems to me that the battery lasted longer after doing some full cycle charges but I could be wrong. I definitely have seen improvement in battery life since the first few days I had watch. Not sure what it is.

spart0n said:
I've got the same issue. I thought it was the sleep tracking but I was wrong
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Click to collapse
How do you know it was not sleep tracking?
For me, I went to bed yesterday with almost 100% battery. The overnight drain was 15%, flight mode enabled, good night mode enabled and spO2 while sleeping on.
My watch is 40mm, BT modell.
Tonight I will try only the automatic good night mode.
What about Bluetooth when my phone is in airplane mode? Will it consume more battery searching for the device? My wifi will also be disabled in the night...

I am seeing this same thing
13% drain with airplane mode, good night mode, and battery saver modes on.
13-14% drain with battery saver mode and good night mode on.
This is for an 8 hour window.
Using the watch during the day, the battery does seem to last longer and I don't see the drain, even when using it to track workouts and such.

Last night my battery used 11%. I'm not sure what the difference is. I know I have been in the 4-6% range in the past but I always do not pay attention. Possibly related to how fully charged the watch is. Why do we think 10% is bad? I did a search on-line and I have to say that 10% seems very good compared to some other watches. The reality for me as that I'm typically getting 2 days plus on a charge unless I'm heavy on GPS. Currently I'm at 50% and I charged the watch 1 day and 9 hours ago. I came from a GW1 which had significantly more battery time but I'm still very happy with the GW4.

My drain is 20% overnight - despite watch being in bedtime mode.

UnknownWolf said:
I am totally in love with my GW4 (Classic 46mm Model) as it's my first smartwatch but there is still one thing that bothers me, the unreasonable battery drain overnight. I charged up my watch last night, put the watch on my desk, came back in the morning and saw about 10% battery drain in 8 hours! That's insane considering the fact that I've disabled everything and even enabled battery saver, I thought after all these years I can finally get a full fledged Wear OS smartwatch and be happy with the battery but Wear OS is still the same OS as it was.
Click to expand...
Click to collapse
If your watch is on your desk and turned on, it's constantly searching for your wrist. If you are not wearing it, turn it off.

I have the same issue about battery drain.
I lose between 15-20% each night with everything off (no SpO2, no snoring, etc)
I have the LTE 46 classic model
But based on people and comments I'm guessing the issue comes because I'm not using a Samsung phone and bed time is not synced with the watch and is still "online" all the night

Geez I thought my 3-5 percent drain was horrible. I have the 44mm Bluetooth only model. The first night it drained horrible but I had every sensor on. I noticed I got much better battery after disabling location. I've had mine paired since 7am this morning (it's now 3pm) responding to texts, wifi on and using Spotify on it at 75 percent brightness and it's at 79 percent now. Maybe I got lucky or something? The only sensors I have are the step counter as well as heart rate when resting more than 10 minutes and I never like to use battery saver mode on mine

Second night and I got about 20% drain overnight with everything turned on. I got a similar battery consumption like adj998. Spotify on first place.
I will try do disable GPS tonight and see if anything changes, but I guess it's a normal behaviour. One thing I could try is to turn the spO2 sensor off.

Read somewhere that unlocked ADB is the culprit. So I have unlocked it.
Let me watch how it helps my 20% overnight drain.

sjgoel said:
Read somewhere that unlocked ADB is the culprit. So I have unlocked it.
Let me watch how it helps my 20% overnight drain.
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Interesting. I'm betting that this drain is related to certain apps as well. When I did my post yesterday about the 11% drain the previous night I noticed the Altimeter app was listed at 4.5%. I immediately uninstalled this app. I had used it once the previous day and apparently it was still using battery. Results: much battery time last night. I would say 3%. In fact, when I looked earlier this morning I still had 41% battery. Yesterday morning I was at 50%. 25 hours and 9% battery used. I have not been very active these last couple days (long days at work). Still putting in about 5,000 steps a day. I have notifications on (gmail, texts, meesenger), use bedtime mode, spO2 sensor off, and do not have watch always on.

fliptwister said:
Interesting. I'm betting that this drain is related to certain apps as well. When I did my post yesterday about the 11% drain the previous night I noticed the Altimeter app was listed at 4.5%. I immediately uninstalled this app. I had used it once the previous day and apparently it was still using battery. Results: much battery time last night. I would say 3%. In fact, when I looked earlier this morning I still had 41% battery. Yesterday morning I was at 50%. 25 hours and 9% battery used. I have not been very active these last couple days (long days at work). Still putting in about 5,000 steps a day. I have notifications on (gmail, texts, meesenger), use bedtime mode, spO2 sensor off, and do not have watch always on. View attachment 5405809
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Click to collapse
Read on Reddit that altimeter drain was a known issue, in earlier models as well.

With people that are having excessive battery drain on their watch: are there any apps which are listed in Wear app -> Watch settings -> Battery that seem like a high percent of battery usage?

fliptwister said:
With people that are having excessive battery drain on their watch: are there any apps which are listed in Wear app -> Watch settings -> Battery that seem like a high percent of battery usage?
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Click to collapse
Actually yeah, for me it's Spotify. I installed it and connected it to my account but did not use it...