Develop Bugs

Do I have a bad battery or phone?

I get 3-4 hours battery life at best I see people saying they get 10 hours I don't see how that is possible? Is my phone a dud or what this is very frustrating. It does the samething On the extended 2100mah battery. I'm running aopk milestone 4 and glados kernel
Sent from my Galaxy Nexus using xda premium

It looks like you were had screen on for close to 2 hours and made a phone call, albeit short. This is normal battery life for as much as you use the device.

You should try manually sync or set the syncing interval as high as possible.
Wifi always ON doesn't affect the battery life unless your wireless connection is weak/unstable.
Lower your screen's brightness or use Auto Brightness.
Fully charge your phone and let it alone for 2, 3 hours and check how much battery drains. If it drains 3-4% in idle mode, it's normal. Check also if your phone wakes up a lot, maybe some apps are running in the background and they wake your phone up frequently.
Hope it helps.

I used to have really poor battery life and like you wondered how people managed to get the stats I was seeing here.
I recently decided to do a factory reset for a different reason and to my surprise my battery life has improved incredibly. Yesterday I got over 18 hours in total with over 4 hours on screen time. This was with the stock gsm battery. Granted I was using wifi throughout but I was lucky to get 8 hours before the reset, even with wifi. With 3g I'm now getting 14 hours easily with over 3 hours screen time.
My point is if you've never done a factory reset, you may want to give it a go.
Sent from my Galaxy Nexus using Tapatalk

It's a bit hard to diagnose the problem based on only a screenshot of your battery stats.
Since your screen is using over 50% of your battery life, my guess is that you just had your screen on for about two hours of the total two hours and forty-five minutes. It's normal to not get more than about two hours of screen time. (Tap on the Screen part of battery stats to get more info on how long the screen was on for.)
In my experience with three Android phones (MyTouch 3G, MyTouch 4G, Galaxy Nexus), all the usual tips to conserve battery life pretty much do nothing to improve battery life: turning off syncing and background data, turning off wireless, don't use widgets, turn off GPS, etc.
Pretty much there are two big battery suckers on Android phones and particularly the Galaxy Nexus--the screen being on and LTE being on. If you dim the screen or just keep it off, you will seriously prolong the battery life. And if you use CDMA only, you will also seriously prolong your phone's battery life.
That said, it's also possible something is wrong with your phone... or your battery. We can't know just from the screenshot you posted.

This looks normal. How much screen on time do you have?
Sent from my Galaxy Nexus using XDA

My screen on time is about 1h 30 minutes with WiFi ON.. 3g/sync/gps off auto brightness

I can't stress this enough, every time.
PUT YOU PHONE DOWN
AND PAY ATTENTION

Smokeey said:
I can't stress this enough, every time.
PUT YOU PHONE DOWN
AND PAY ATTENTION
Click to expand...
Click to collapse
These kids these days...

battery issue

I've been an owner of the Samsung galaxy s 2 since may from a nexus one which I had for two years...
Since I got this phone, noticed I've been having issues with the battery life on this phone. If I unplug from full charge at like 2pm, and use it, I wouldn't say a lot but not like not at all, the battery would be dead before midnight. That's a battery life of less than 10 hours.... that sucks...
My data is usually on most of the time considering I have 5gb and can't use it all... I tether near end of bill cycle to use it up... lol
GPS is rarely ever on... Bluetooth is only turned on when I plan to use my plantronics voyager pro bt headset
I look at my advanced task killer,, on avg of 15+ things are open, 1/2 of which I don't use or touch....
Any way to improve on the battery life without rooting/custom rom?.?

iandroo888 said:
I've been an owner of the Samsung galaxy s 2 since may from a nexus one which I had for two years...
Since I got this phone, noticed I've been having issues with the battery life on this phone. If I unplug from full charge at like 2pm, and use it, I wouldn't say a lot but not like not at all, the battery would be dead before midnight. That's a battery life of less than 10 hours.... that sucks...
My data is usually on most of the time considering I have 5gb and can't use it all... I tether near end of bill cycle to use it up... lol
GPS is rarely ever on... Bluetooth is only turned on when I plan to use my plantronics voyager pro bt headset
I look at my advanced task killer,, on avg of 15+ things are open, 1/2 of which I don't use or touch....
Any way to improve on the battery life without rooting/custom rom?.?
Click to expand...
Click to collapse
Well i got my battery to last 17+ hours on average. Granted yes i am running a custom ROM, but you should be able to hit pretty close to that. I had to teach myself about wakelocks and installed and used a combo of GSam Battery Monitor, Better Battery Stats and a CPU Spy.
I have a drop of 5% for 3 hours last i really tracked it. Since you don't want to root....you cannot use better battery stats which shows you more in depth what is keeping your phone awake. But luckily GSam Battery Monitor can see wakelocks too, just not in depth. then use CPU spy to see how often the phone goes into deep sleep. GSam can also show you what apps (like Facebook) is constantly running.
What i noticed is you save alot of battery by putting everything on manual sync and turning Google sync off. Put phone screen brightness down to 20-40% ( don't always need it at 100%). BTW Bluetooth does kill alot of battery
Don't use task killers, 99% of everything shown is task killers are active processes, if you kill those tasks.....they will restart and waste battery trying to restart. you can only stop those from running when you are rooted.

[Q] Standby Battery life woes

So Does anyone get good standby battery? Lately, not using it, it only lasts about 2-3 days. My wife's iPad at the same point in time has about 80% charge left if it isn't used.
Thinking about switching back to Apple on the tablets for just this reason.

DId you see what causes such huge draining
Hi, did you check what is causing this huge draining? My tablet is fine, taking just 2-3% overnight.

My P600 drops 5-10% over a 24 hour period, but only drops 2-3% if airplane mode is on.

Probably you installed an app that causing wake lock. There are a lot of theads about wake lock, but for you to know is some background process that don't allow your device to enter in deep sleep. Unfortunaly, android is like that, if you install a bad app you going to have issues.

Yeah maybe, but with KitKat and no root, ferreting out problems is much harder. Seemed to be mostly fine before the last two updates I got.

Thats crazy ... Android OS should not be anywhere near that high a percentage. Have you tried reatrting your tablet a few times if not I'd say factory reset and see what happens. I must say this Tablet has had A LOT of people complaining about battery issues - seems like a product fault somewhere. Fortunatly mine is still gojng strong hopefully that doesnt change.
Sent via Note 10.1 2014 Edition on Tapatalk

Yeah, it restarts itself when I pick it up and the battery was completely drained. Yesterday I had 6minutes screen on time, and was dead within 2 days of unplugging it. Bought an iPad for Christmas. Can't decide what to do here. Android seems to always have battery issues with the solution being "Factory Reset it". Annoys the heck out of me.

So, after a data wipe. Minimally installed and syncing apps, the 2 day drain is gone, replaced by losing about 3-4% at night. Now decisions. The deal was I was suppose to sell my Android tab here, and buy an iPad due to battery frustration woes. Well, it was the deal with my wife. Now I am thinking of just keeping both of them. Wonder how long I can hide it. iPad still destroys the Note 10.1 2014 on battery life....but there are a few Android things I want, e.g. Stylus, Share menu, that I believe Apple or app developers on iPad will fix soon.

Battery life stinks? What gives?

Ok so I bought my White Note 4 when it launched and so far, I've been less then impressed by the battery life. What's weird is my wife has the exact same phone and hers seems to last WAY longer even though we have about the same things turned on (I keep bluetooth on and location on but only when I'm opening like facebook or google maps does the location icon ever appear).
Here is my battery life in a nutshell. 5 hours off of charger and only 1 hour of on screen time and its at 76%. For whatever reason photobucket isn't letting me upload my screenshot.
Screen is 24% (1hr 7minutes)
android os 16%
android system 15%
facebook 9%
cell standby 6%
and so on.
Signal strength in my office where I have been all morning is -110 dbm. Phone has been on wifi all day, bluetooth is left on, location on, but thats pretty much it. Turning off bluetooth didn't seem to change it at all btw.
What gives? Anything I can do? I see guys posting screen shots of there battery life that is SOO much better than mine.
Thanks for the help!

that's not terrible...you would be looking at 20+ hours of uptime and 4.5 hours of SOT. You could probably improve it with no WiFi/BT/location and bringing your screen brightness down.
I get about 30 hours up and 5-6 hours of SOT. I greenified everything that doesn't need to be active and I use automateit to turn GPS on and off only as apps that require it are in use (root only for that).
The problem with comparing battery life is that there are so many variables. Go airplane mode with screen at 5% and you can probably get 10 hours of SOT. Conversely if you are anywhere where signal isn't great or even if it is but switches towers a lot and the battery life will be terrible. 5 hours or so of SOT should be plenty for the vast majority of users between charges ( zero lemon thread participants exempted).

thegipper said:
Ok so I bought my White Note 4 when it launched and so far, I've been less then impressed by the battery life. What's weird is my wife has the exact same phone and hers seems to last WAY longer even though we have about the same things turned on (I keep bluetooth on and location on but only when I'm opening like facebook or google maps does the location icon ever appear).
Here is my battery life in a nutshell. 5 hours off of charger and only 1 hour of on screen time and its at 76%. For whatever reason photobucket isn't letting me upload my screenshot.
Screen is 24% (1hr 7minutes)
android os 16%
android system 15%
facebook 9%
cell standby 6%
and so on.
Signal strength in my office where I have been all morning is -110 dbm. Phone has been on wifi all day, bluetooth is left on, location on, but thats pretty much it. Turning off bluetooth didn't seem to change it at all btw.
What gives? Anything I can do? I see guys posting screen shots of there battery life that is SOO much better than mine.
Thanks for the help!
Click to expand...
Click to collapse
Battery life varies per device as no two users have the phones setup the exact same way with the same apps. I averaged at least 6 hours of SOT when connected to wifi and about 5 to 5 1/2 hours of SOT when using LTE. I never use bluetooth, location is set to high accuracy.

BT is designed to be low power when not connected. Location on is your biggest drain. Set to "battery saving," and you'll be ok.

Doesn't greenify need root access? I have the retail version so no root here. I've used it with my note 2 and it did help a lot but it doesn't look like root will be coming to the note 4 any time soon unfortunately.

thegipper said:
Doesn't greenify need root access? I have the retail version so no root here. I've used it with my note 2 and it did help a lot but it doesn't look like root will be coming to the note 4 any time soon unfortunately.
Click to expand...
Click to collapse
No but you are limited to what you can hibernate. I use the paid version without root and am very happy with my battery stats. I get about 6 to 7 hours of screen time with about four days between charges. Try the unpaid version first.

Changing my location to Battery Saving has been the biggest jump in battery life for me. I do have Greenify installed but I don't think it really helps that much for my non-root phone.

I use widgetsoid and only use a few toggles off it but i keep my location off, bluetooth off, and use screen settings as follows in darkness 10%, regular light 40%, bright bright light 100%. I keep wifi on while using it and then turn it off when im out. My battery lasts me all day and then some. That includes Facebook and Twitter and other stuff. I haven't used greenify since switching from my note 2, but im sure theres even more I could do, especially with Tasker.

[Q] SM-T800 losing 6%/day when idle

Hey there, new member although I've been reading these forums for months.
I've owned an iPad for a couple of years now. I use it from time to time which requires me to charge it about once every 2 months. A couple of months ago, I bought a SM-T800 and thought the battery life was horrible. Keeping it completely idle for 24 hours still drained the battery 11%! After a while, I left it dead next to the iPad.
Hoping Lollipop would help this issue, I took the opportunity to completely wipe the tablet and restart from scratch. Each day, I attempted improvements (using BetterBatteryStats) and took notes of those changes. The best I could get is losing 6%/day while the tablet is off (that is, screen is off, not powered off).
Yes, I'm rooted. Not much is installed. According to BBS, com.google.android.gms is the worst with 1639 wakeups, but disabling Google Play Services didn't help.
Is 6%/day when idle considered normal? It amazes me that the iPad is losing about 1%/day.

Lyverbe said:
Hey there, new member although I've been reading these forums for months.
I've owned an iPad for a couple of years now. I use it from time to time which requires me to charge it about once every 2 months. A couple of months ago, I bought a SM-T800 and thought the battery life was horrible. Keeping it completely idle for 24 hours still drained the battery 11%! After a while, I left it dead next to the iPad.
Hoping Lollipop would help this issue, I took the opportunity to completely wipe the tablet and restart from scratch. Each day, I attempted improvements (using BetterBatteryStats) and took notes of those changes. The best I could get is losing 6%/day while the tablet is off (that is, screen is off, not powered off).
Yes, I'm rooted. Not much is installed. According to BBS, com.google.android.gms is the worst with 1639 wakeups, but disabling Google Play Services didn't help.
Is 6%/day when idle considered normal? It amazes me that the iPad is losing about 1%/day.
Click to expand...
Click to collapse
I've had on CM12 and it drained 0-1% while on idle. With touchwiz (lollipop or kk) I lost 6% on idle when I woke up from bed. So my result is that touchwiz usually has more drain than CM12. A few custom roms like Ironrom or Twdetox make it drain less from what I tested. But before you go through all that, I've seen a tweak to stop wake locks from Google services. I haven't test it throughly but seems promising.
Sent from my SM-T800 using Tapatalk

DUHAsianSKILLZ said:
I've had on CM12 and it drained 0-1% while on idle.
Click to expand...
Click to collapse
Wow. Me want that
DUHAsianSKILLZ said:
I've seen a tweak to stop wake locks from Google services. I haven't test it throughly but seems promising.
Click to expand...
Click to collapse
Tell me more about that tweak. I'll be very happy to test it out.

Lyverbe said:
Wow. Me want that
Tell me more about that tweak. I'll be very happy to test it out.
Click to expand...
Click to collapse
Here's the video. https://youtu.be/OU6knqCyvPI

I don't see what the problem of a small amount of battery being used if the device is on is?
It's obvious it's going to use some power, there are still things running in the background or you'd never get messages, emails, sync etc. Really the whole point of leaving it on.
Android itself is not the problem, it's more to do with Google services and apps.
If you don't want those things turn it off imo or completely remove gapps.

DUHAsianSKILLZ said:
I've had on CM12 and it drained 0-1% while on idle. With touchwiz (lollipop or kk) I lost 6% on idle when I woke up from bed. So my result is that touchwiz usually has more drain than CM12. A few custom roms like Ironrom or Twdetox make it drain less from what I tested. But before you go through all that, I've seen a tweak to stop wake locks from Google services. I haven't test it throughly but seems promising.
Sent from my SM-T800 using Tapatalk
Click to expand...
Click to collapse
I use TWDetox v3.0 on my 8.4 tab s the SM-T800 version is beta at best experimental at worst at this time but I can give you my own experiences on a similar device, YMMV. On kitkat stock with my brightness turned almost all the way down and auto on, I also used greenify I would lose about 5-6% by the time I woke up. On this rom same basic settings wifi still on, greenify still on, tab set to low brightness I would lose about 1-2% over the same 8h though this os a debloated rom so a lot of samsung "highly important" apps are missing like milk and watch on and yea basically all the junk no one wants that runs at startup all the time.

ashyx said:
I don't see what the problem of a small amount of battery being used if the device is on is?
It's obvious it's going to use some power, there are still things running in the background or you'd never get messages, emails, sync etc. Really the whole point of leaving it on.
Android itself is not the problem, it's more to do with Google services and apps.
If you don't want those things turn it off imo or completely remove gapps.
Click to expand...
Click to collapse
I'm not saying it's a problem. The question simply comes from the fact that I'm comparing my SM-T800's 6%/day loss versus iPad3's 1%/day and wonder if it's normal or not. After all, the iPad is also syncing stuff and it's barely using any battery. If everyone tell me their SM-T800 drains 1%/day too, then I'll know there's something wrong on my side. If not, I'll live with the fact that the SM-T800 drains 6%/day.
I went on Cyanogenmod's site and apparently the SM-T800 is not officially supported. I'll need to read http://forum.xda-developers.com/gal...rom-cyanogenmod-cm-12-0-sm-t800-16gb-t3005540.

I think 6% a day is normal, the tablet is doing quite a bit even when sleeping, I have an SM-T800 10.5" with a the stock UK rom.
Is sleeping wifi scanning enabled, the T800 has that does it not.
John.

Hi to all. I recently bought an SM-T700 and still playing around with it.
I have disabled everything you could imagine when I turn off the screen:
Wifi Off
No Wifi Scanning
No Sync
No BlueTooth
Everything is off
Anyway, I'm also loosing around 6 to 8% in 24 hrs of idle / screen off.
I also have an old S2. If I put it in flight mode, it won't even lose even 1% during all night stand by.
Is there anything I'm missing here?
I don't see why it shall lose 6% if everything is off. It's just on doing nothing!
Thanks in advance and sorry for my english!

pantezuma said:
I don't see why it shall lose 6% if everything is off. It's just on doing nothing!
Click to expand...
Click to collapse
I was worried too and that's why I came here to ask if this situation is considered normal. It apparently is, unfortunately.
It seems the stock OS is taking more juice if we're comparing it with CM (according to DUHAsianSKILLZ) which only takes 1%/day. If it's true, I fail to understand why the stock OS takes at least 6 times more than that for the same results. That can't be good and we can't blame everything on bloatware.

This is a screenshot I a few months ago. This was when I went to bed and woke up in the morning. I forget what I did but, I did do something I don't remember that would stop wakelocks. I think I did a few things in app ops. This was touchwiz Lollipop.
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"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
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Now here's CM12. I didn't change any settings and left it alone. It handled wake locks well and went to deep sleep. No drain after going to bed and waking up in morning.
Sent from my SM-T800 using Tapatalk

Thanks for your replies.
I bought this just two weeks ago and was amazed about how low was the standby battery consumption after upgrading to LL via OTA.
But suddenly (I installed a few apps) it started increasing the idle consumption.
I'm going to factory reset the tablet and turn everything off to see what happens (I have nothing important yet on it as I was just learning how to use it and hesitant about rooting ir or not, finally decided 'Not yet').
As I'm not rooted i feel there isn't much I can do about it (On my old S2 i use Greenify, Amplify, App Quarantine, Disable Services, etc.).
If somebody else have info regarding idle battery consumption on stock and non rooted I'd really appreciate it (Wifi off, location off, sync off, etc.)
Best regards
Mariano.

before I rooted and flashed cm I was only getting 2% drain overnight just by turning on airplane mode.
You could also try turning on ultra power saving mode before you sleep, I think it said it has something like 140 days battery life when I turned that mode on at full charge.

Pleske said:
You could also try turning on ultra power saving mode before you sleep, I think it said it has something like 140 days battery life when I turned that mode on at full charge.
Click to expand...
Click to collapse
I tried it during the last 24 hours and the battery still drained 6% by sitting on my desk in ultra power saving mode. I think this mode reduces the display which drains less battery but I don't think it has any effect on the processor itself. The wakelocks still happen.
I'll try the airplane mode for the next 24 hours but I fear it won't do much.

Oh my God!!!
Airplane mode during 24 hours. Battery drain result: 0%
How can this be? I remember once trying to simply disable WiFi and it didn't change a thing. I don't understand why activating airplane mode changes anything. Could it be that with WiFi off, Android's system still tries to access stuff (creating wakelocks) but, in airplane mode, it completely halts all data related activities (halt related wakelocks)?
I'm truly astonished by this test. Thank you very much Pleske for that suggestion!
Next test: Airplane mode on with WiFi on.

Airplane mode with WiFi enabled still drained 6%.
I installed "Timed Toggles" (https://play.google.com/store/apps/details?id=uk.co.ergodicity.timedtoggles) to automatically enable Airplane mode and disable WiFi at midnight. It's still not as impressive as the iPad, but it's incredibly better than losing 11% each day.

Lyverbe said:
Airplane mode with WiFi enabled still drained 6%.
I installed "Timed Toggles" (https://play.google.com/store/apps/details?id=uk.co.ergodicity.timedtoggles) to automatically enable Airplane mode and disable WiFi at midnight. It's still not as impressive as the iPad, but it's incredibly better than losing 11% each day.
Click to expand...
Click to collapse
Um...... well 3 small things.
1 Turning on wifi after you turn on airplane mode makes airplane mode pointless unless you also go around with bluetooth on all the time since on the t-800 those are the only 2 radios the tablet has.
2. Odds are you are getting attacked by the battery saving feature of the interactive governor that the galaxy tab s uses which when woken up instantly cranks the processors up to 1.9GHz to help deal with what woke it up and to be ready to be snappy and handle what ever it is that you want to do, unfortunatly if you are asleep it runs like this fpr a bit then goes back to sleep. Get enough annoying things telling your cpu "hey hey look at me... I need you look at me" and you get some drain happening. Not sure how the ipad handles waking up but it does have a far less powerful and therefore power hungry processor to wake up.
3. Greenify still works even if you are not rooted and do not have exposed, it just does not do as many things automatically for you and can not handle Samsungs very important system bloatware for you. You can still stop the apps yourself or freeze them yourself.

acdbrn2000 said:
Um...... well 3 small things.
1 Turning on wifi after you turn on airplane mode makes airplane mode pointless unless you also go around with bluetooth on all the time since on the t-800 those are the only 2 radios the tablet has.
2. Odds are you are getting attacked by the battery saving feature of the interactive governor that the galaxy tab s uses which when woken up instantly cranks the processors up to 1.9GHz to help deal with what woke it up and to be ready to be snappy and handle what ever it is that you want to do, unfortunatly if you are asleep it runs like this fpr a bit then goes back to sleep. Get enough annoying things telling your cpu "hey hey look at me... I need you look at me" and you get some drain happening. Not sure how the ipad handles waking up but it does have a far less powerful and therefore power hungry processor to wake up.
3. Greenify still works even if you are not rooted and do not have exposed, it just does not do as many things automatically for you and can not handle Samsungs very important system bloatware for you. You can still stop the apps yourself or freeze them yourself.
Click to expand...
Click to collapse
1. I remember trying to disable WiFi (not enabling Airplane mode) and it didn't change a thing. For some reason, activating Airplane mode does have a dramatic impact compared to just disabling WiFi. Bluetooth has never been activated.
2. iPad's CPU vs. T800.... good point. That should be a good reason why iPad's battery seems better but is it enough to justify T800's 6%/day? I wonder.
3. I do have Greenify installed and set up for a couple of apps. As for bloatware, I disabled all those I could think of.

Ipad 1 -- 1 GHz ARM Cortex-A8
Ipad 2/3 -- 1 GHz Dual Core ARM Cortex-A9 (different gpu though between the 2)
Ipad 4 -- 1.4GHz Dual Core ARM processor
Those are the regular Ipads the Ipad air 2 comes the closest to the tab s with a tri cor 1.5GHz processor
That is just the differences with the processor when you also factor in that IOS is a very regulated system of what can and can not be installed, what apps can make what system calls, and general management that makes Apple very annoying for a PC makes IOS a very fast responsive and stable OS for phones and tablets even with much less powerful hardware. It is the basis of the difference between a specialized and a general computing platform. Apple products will get better battery life on average and be more compatabile with less issues then android until (and I would hate it if it happened) Google makes one device with only slight differences for screen size or storage and that is it. Also all apps would have to come from the store and be screened far more then they currently are.
The big advantage android has is with root and custom roms our performance increases where as jailbreaking ios devices either keeps performance the same or can even degrade it.

Apple products have amazing battery life in general. Maybe except for Macbooks (non-air), which still have great battery life. Apple's phones, tablets, and MP3 players have amazing battery life compared to similar products from other brands. I don't know what they do, but there's some magic to their battery and power consumption. I'm not surprised every Samsung device I owned had lower battery life than it's contemporary Apple equivalent.
iPad Air 2 vs T800 specs relating to power consumption:
mAh: 7340 vs 7900
Cores: Tri 1.5 vs quad 1.9 + quad 1.3
RAM: 2 vs 3
http://www.gsmarena.com/compare.php3?idPhone1=6742&idPhone2=6438