Develop Bugs

Ughh battery drain definitely too fast.

I feel like I make a thread for each phone I go through. First Blackberries, then Droid X, now Galaxy Nexus.
I am getting pretty horrible battery drain that is definitely worse than others' Nexuses. I have gone to the extended battery now for a few days, yet in the morning, when I unplug from charger (says 98% but charged?), with brightness only a quarter of the way up from lowest, I can literally watch the percentage (battery number mod in corner) drop one-by-one each minute or a few...So if I am actually using the phone, you can imagine it drops pretty fast. Yesterday, with very very moderate use the phone was still dead within 5-6 hours. It was at the mid-80s within an hour or more. Again, with moderate use.
It is stomach-dropping watching the percentage number just go down and down. Yet my friend's Gnex using the extended battery his first day did not hit 85% yesterday until 5+ hours later. The battery stats page on mine shows nothing with high numbers except Screen and Android OS, so I assume no apps are draining it. I am rooted with unlocked BL, on bigxie's deodexed ROM with softkeys mod, battery percentage mod, and power menu mod. I have 100-something apps and many widgets but no battery draining/updating ones. Others with the same ROM report fine battery.
I believe after using the ext. battery for a couple days, it should be "conditioned" if needed at all, yet I see no improvement.
I'm getting very angry watching this drop.. For example, 40 minutes off the charger with almost NO use except for turning the screen on here and there, I am at 94% battery with Screen at 46%, Android OS at 34%, Phone Idle 11%, Cell Standby 9%, and Android System 2%.
And then 1 hr 20 min in, at 88% battery with 55% Screen, 27% Android OS, 6% Phone Idle, 6% Cell Standby.
This doesn't sound normal right? Keep in mind, those numbers are with almost no phone use..very minimal settings menus visited and one update from Market.
Jesus, literally almost every time or two I turn the screen on just to check these numbers, I see the damn battery percentage drop a number. Not even using the phone how/as much as I normally would be. This is infuriating. Luckily, it doesn't seem to drain much with the screen off.

Quit checking and wait til the bug is fixed and blood pressure stabilizes?
Crazy world, ay?

Update to 4.0.2 or 4.0.3 with an improved kernel = success.
Use the phone for 1-2 weeks to stablize battery life - mine is better now than it was when I began using it. But the kernel/rom makes a big difference.

Thanks. Any suggestions on with combo to use now? 4.0.3 preferrably I guess.
Then why does my friend on totally stock 4.0.2, non-rooted have that great battery life from the first day using the extended battery?? I'm pretty much basing mine off of his and other's who are getting ridiculously long life. I never understood how it varies SO much. We should all have the same relative to usage.

just4747 said:
Thanks. Any suggestions on with combo to use now? 4.0.3 preferrably I guess.
Then why does my friend on totally stock 4.0.2, non-rooted have that great battery life from the first day using the extended battery?? I'm pretty much basing mine off of his and other's who are getting ridiculously long life. I never understood how it varies SO much. We should all have the same relative to usage.
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No. Because no two phones are set up the same. Too many variables to say relatively same usage. For instance, when i go to bed i get 2-3 hours standby per percentage point. Not everybody is going to get that.
Crazy world, ay?

@rbiter said:
No. Because no two phones are set up the same. Too many variables to say relatively same usage. For instance, when i go to bed i get 2-3 hours standby per percentage point. Not everybody is going to get that.
Crazy world, ay?
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Click to collapse
Maybe, but the fact that I have no other visible outstanding draining factors, and I get no 4G at home and therefore have it set to CDMA only...I should not be seeing 1% drops almost every time I turn the screen on for more than 30 seconds. Especially with an extended battery.
God forbid I want to use GPS or 4G.

More battery life threads please.

case0 said:
More battery life threads please.
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Wow, really? At first glance in all sub-forums I saw about two, if that. I have a legitimate concern, especially when my friend is getting about 4 times better life. Thanks for your help though in the device forum where this 'doesn't belong'.
..And over the course of only a few minutes of the screen being on maybe twice and sending one email, I saw it go from low 82-83 down to 77. ****ing awesome.

just4747 said:
Wow, really? At first glance in all sub-forums I saw about two, if that. I have a legitimate concern, especially when my friend is getting about 4 times better life. Thanks for your help though in the device forum where this 'doesn't belong'.
..And over the course of only a few minutes of the screen being on maybe twice and sending one email, I saw it go from low 82-83 down to 77. ****ing awesome.
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Click to collapse
You probably have a misbehaving app. Download better battery stats from the android apps and games section here at xda and let it run for a day or so and see what processes are being used the most and what your wakelocks are, etc.
Also, find a 4.0.3 rom with a kernel that can be undervolted and try that out.
Sent from my Galaxy Nexus using xda premium

joshnichols189 said:
You probably have a misbehaving app. Download better battery stats from the android apps and games section here at xda and let it run for a day or so and see what processes are being used the most and what your wakelocks are, etc.
Also, find a 4.0.3 rom with a kernel that can be undervolted and try that out.
Sent from my Galaxy Nexus using xda premium
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Click to collapse
Thank you, downloading now and will check it out.

I'll admit I'm using the GSM version so my experiences may not apply but for the first few days my battery life was utter crap.
Its been MUCH improved over the last few days, I dont have the wakelock issue and with the screen off the battery drain is literally only about 3% per hour, and thats with background data on.
YES, the screen DOES use a lot of battery, it isnt really avoidable and is somewhat expected with a 720p 4.6 inch super AMOLED screen.
The one thing I can recommend doing is finding a modded kernel and undervolting that CPU - It seems they've been really rather generous providing power to the thing, I've been able to take off at least 100-150mv across the board.

Antzor said:
I'll admit I'm using the GSM version so my experiences may not apply but for the first few days my battery life was utter crap.
Its been MUCH improved over the last few days, I dont have the wakelock issue and with the screen off the battery drain is literally only about 3% per hour, and thats with background data on.
YES, the screen DOES use a lot of battery, it isnt really avoidable and is somewhat expected with a 720p 4.6 inch super AMOLED screen.
The one thing I can recommend doing is finding a modded kernel and undervolting that CPU - It seems they've been really rather generous providing power to the thing, I've been able to take off at least 100-150mv across the board.
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This - My battery on the stock battery on GSM sucked first few days, and I was really concerned I made a poor purchase. But with the screen on probably 5 or 6 hours of my work day it lives through the day and just enough to get home after that. I can charge it at work too, which I usually do. On my day off it survived 18 hours and still had ~20% battery life left on 4.0.3 AOKP/Francisco.Franco Kernel

From my experience, the battery life isn't bad. I did install the "extended" battery as soon as I bought the phone but is isn't much bigger than the stock battery. I am on stock rooted 4.02. With LTE off I use about 2% per hour in standby. With LTE on it is almost double that (3-4%/hour). I have several widgets running and gps enabled. (wifi when available) I can easily get a 16-18 hour day and have 50% remaining when I go to bed unles I sit around gaming for a couple hours.
I may try a new ROM tonight but I expect it will probably make things worse.

Im running a bone stock setup and im getting 12 -14 hours a day... normally I read posts like the one skiddingus posted and wonder why I never can achieve those readings so i feel your confusion . I do have 4g on and gps off screen is about 1/4 of the way up brightness wise

How To: Better Battery Life

I hear it all the time... Does this rom provide good battery life? How's the battery life? Why is my battery life suck? So; it may have been done already somewhere; but I figured after watching and logging my own battery life, I could really help some others. I'll section this out; no specific order at all.
ROM: No matter how many times I look at a ROMs thread, I get to see a multitude of "How is the battery life" posts. You know it, I know it, and we all know it. Truth is; after using plenty of ICS roms out there; most of them have similar battery life. Currently I'm running the Blu Kuban rom, and I get just as good battery life as I do with most other touchwiz based roms. To each rom their own. Read up on the rom itself before you go blaming the rom for battery life. I've noticed the JB builds aren't the best with the battery, but we must remember those are usually noted for having bad battery life. Either way, most of the ROMs I've used personally perform rather similar in actual battery life.
Kernel/Governor tweaks: I can't stress this enough. Governor's and Kernel Thread. That thread will teach you more than anything you want to know about kernel and governor tweaks. Some of these governors can send your phone to absolute battery immolation, while others can set your phone up to last 2x as long. I prefer the more conservative approach and end up with a ton of battery left at the end of the day. While these settings are important, the most important is yet to come.
APPS. I can't stress this enough. I used a quite a few different setups to find what all really uses battery, what doesn't, and what I should to to maximize my own battery. For those of you who don't know me at all, I work ten hours a day, and I used this time frame to measure the battery usage while it's sitting in my car for ten hours. I have a Trexcell 3800mAh battery, so it's roughly 2x the power as the stock battery.
What's the number one usage on my device? NOTIFICATIONS! All of those apps that automatically feed their greed by getting updates from the servers or whatever. Facebook, Hotmail, Tapatalk, and EVEN just the gMail app could drain 10% of my battery in ten hours. Let me show you my findings.. These are the normal apps I use that can automatically update over certain time frames.
Hotmail
Tapatalk (Xparent Red version)
gMail
Facebook
Now if they all automatically update on the stock settings, ten hours of work will mean I'm coming back to a phone with only 75% battery. With only 4-6 hours of deep sleep! That means these apps are waking my phone up to do whatever they want for quite a while. With all of them set to be manually updated; I come to 95-97% battery life. That's quite a stretch in a difference you know?
So, I tested each with the others off and here is what I found. (I tested for three days, wrote my results for each day, then switched to a different app)
Hotmail set to update hourly would leave me with about 90% of the battery at 4:30. Average deep sleep times were in the 8-9 hour ranges.
Tapatalk was setup stock for 15 minute updates. I'd lose at least 10% on the battery every day! Deep sleep however would range in the 8.5-9.5 hour range.
gMail was set to update hourly and would leave me with 95% each day with only keeping the phone awake for 30 minutes on average.
Facebook updates are odd; since they don't happen all the time. So I had a good friend post on my wall three times a day and noticed that it would eat a LOT of battery, usually 10-15% and keep my phone awake for about 30 minutes a pop.
Now I must note, for my tests I had almost nothing installed on the phone aside from the apps listed and the basic apps available in the blue Kuban rom. For the tests, I set google voice to do not disturb so phone calls and the like wouldn't be an issue.
With all four of the apps set to default updates however (no messages on facebook aside from one day), the battery life ranged from one day being 67%, second day ended with 74% and the third day left me with 72%. That's a LOT of battery for just sitting in my car.
After these findings, I've switched all my apps to update only when I manually refresh them, and I'll tell you what, my battery life has never been greater. I literally come home with 95% battery on average and can sit and play on my phone almost all night without charging until it's nightly stay on the charger.
Just some other tips I've learned along the way.
Wifi is a battery slaughterer if it's not connected. Driving around the city and having the wifi detect all kinds of networks is just battery slaughter. So, my rule of thumb now is, when I leave the house the wifi goes off. It's true that wifi uses less battery than 3g and 4g, but when you're picking up random networks and the radio is searching through them, it's just no good for the battery.
Brightness, it's a key. I can't stress this enough, if you don't need 100% brightness and want better battery life, turn that screen brightness down to an acceptable level.
As an ending to this short but sweet little tidbit of information, I'd like to share why I wrote this, did all this testing, and why it mattered to me since I have an extended battery. My phone is my link to the world, my family, potential jobs, and just my favorite handheld entertainment device. Me and my fiancee` both have the E4GT, and I have the extended battery. She has the stock battery and it doesn't last long at all for her. So my plan now is to work with her on her battery life, and give her this extended battery. I won't need it since I literally have to try to get to 50% battery life with it. I usually end up plugging my phone in for the night at 65-75% battery. I just figured I'd share this with people on the forum as maybe a different approach to saving some precious battery. If you like it, tap the thanks button. If you have any ideas to better this, let me know!

How's battery life on this ROM
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VVVVVV
ÄÖK¶ B4
"420 Special Edition 10/16"

Just like to add for people to check their batteries lol...these stock batteries that come with the phone don't last all that long..a lot of these batteries go bad quick and need to be replaced (a simple spin of the battery will tell you if you need it changed)...and for a lot of people to stop constant deep charges and to charge when needed instead of pushing the battery to low critical levels
-TeaM VeNuM Like A Boss

I will also add that if you're going to try and mess with settings such as I/O or over/under clocking do your research so you don't jack your phone trying to save a battery. I say this from experience lol
Sent from my SPH-D710 using xda premium

I understand leaving your phone on all day long so you can see texts and missed calls and stuff but why not just turn off your data during the day instead? I use this widget when I am in a poor signal area, don't need data, or sometimes overnight https://play.google.com/store/apps/details?id=com.farproc.data.enabler&hl=en Simple and effective and you can let your apps sync for times when you are using the phone
Undervolting also helps a little

Step 1. Install CM10 or ParanoidAndroid.
Step 2. PROFIT!
Battery life between stock and AOSP is night and day.

The questions about battery life are there because not every kernal is the same. Especially ones that are early in development. Pretty much every AOSP rom will defer some amount and even more so if 1 of them is in its early stages.
Sent from my SPH-D710 using xda app-developers app

What battery problem I'm, all good
Sent from my SPH-D710 using xda app-developers app

What most people need to know is no matter what tweaks are applied.. YMMV. It's all down to the user.. Best way to save battery on your phone.. Turn it off!!!! lol But I agree with the things posted. I'm always messing around to find the best settings.. So far i've gotten over a day (1d 3 hours) with over 2 hours screen on with my setup. Which is great for me. But all in all, it's how i use my phone.

MiguelHogue said:
Just like to add for people to check their batteries lol...these stock batteries that come with the phone don't last all that long..a lot of these batteries go bad quick and need to be replaced (a simple spin of the battery will tell you if you need it changed)...and for a lot of people to stop constant deep charges and to charge when needed instead of pushing the battery to low critical levels
-TeaM VeNuM Like A Boss
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Click to collapse
What do you mean spin the battery? As in literally put in on a counter and spin it?

VeEzyZ32 said:
What do you mean spin the battery? As in literally put in on a counter and spin it?
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Click to collapse
Yes.. If it's spins that means it's bulging.. And that equals a bad battery
-TeaM VeNuM Like A Boss

MiguelHogue said:
Yes.. If it's spins that means it's bulging.. And that equals a bad battery
-TeaM VeNuM Like A Boss
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Click to collapse
And if it jumps up and starts doing flips.... YOUTUBE THAT SH!T!!!!! :laugh:

milky1112 said:
And if it jumps up and starts doing flips.... YOUTUBE THAT SH!T!!!!! :laugh:
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Click to collapse
Lol if it jumps and starts doing flips.. Stand back... That thing about to explode
-TeaM VeNuM Like A Boss

Oh everyone loves the magical blue smoke! (i was an airvraft electrician in the navy, seen batteries that werent happy lol noooooo funn)
Sent from my braille Epic Touch

I wanted to share some of my thoughts and experiences with battery life on my E4GT.
On GB I had great battery life...As soon as I got on any version of ICS I started having battery life issues. I eventually learned that my battery was buldging so I ordered a new one. Once I got my new battery, I thought life would be grand...NOT so much!!
Over the last month or so and ROM after ROM, tweak after tweak and even going straight stock I figure it was actually the device itself that was the problem...AND it was the problem from the day I got it last Dec. From reception to battery life to buzzing camera.
Something I've seen as is that "freezing" an app doesnt always disable it...I've had to completely uninstall something to get it to not run...even though its frozen and all of its startup references are disabled in Autostarts.
I dont care for the stock browser, but I've learned that 3rd party browsers such as Firefox and Chrome continue to run and use CPU even after exiting...Now, FIrefox has an actual "Quit" option while chrome doesnt...So if you Quit out of Firefox its ok, but unless you close your tab in Chrome it just keeps on chugging battery power.
A TEP replacement phone is what finally resolved my issues!!
I've only had my new phone for 2 days now, but I'm already seeing better battery than before, plus better reception and a camera that doesnt buzz.
I've got Agats ROM with the BluKuban 1.8 Kernel. This Kernel has a few more options enabled so I use that but I like how Agat put his FI27 ROM together.
Thanks for reading...

Found this one to be very helpful (written for the nexus but some does apply to our device):
http://forum.xda-developers.com/showthread.php?t=1599025
Also if you have a newer version of maps, make sure to go to settings-location settings and disable location reporting and location history, these two kill your battery when turned on.

CleanRom 5 battery

Hi,
This question is for anyone using the latest CleanRom on their Note II. Just wondering if your average battery drain is around 4-5%/h. I use BetteryBatteryStats. I also check the Battery section under Settings. The most battery life I have been able to get is 12 - 15 h with 1-2h screen time. At this point, the battery is at less than 10%. Is this normal ? I thought I remembered getting better life from older versions of CleanRom. I know these numbers are never achievable on any AOSP rom that I have tried. Just wanted to see what everyone's experience is with battery life. Just post any thoughts!
Thanks for your feedback! I appreciate your time!

AEiX said:
Hi,
This question is for anyone using the latest CleanRom on their Note II. Just wondering if your average battery drain is around 4-5%/h. I use BetteryBatteryStats. I also check the Battery section under Settings. The most battery life I have been able to get is 12 - 15 h with 1-2h screen time. At this point, the battery is at less than 10%. Is this normal ? I thought I remembered getting better life from older versions of CleanRom. I know these numbers are never achievable on any AOSP rom that I have tried. Just wanted to see what everyone's experience is with battery life. Just post any thoughts!
Thanks for your feedback! I appreciate your time!
Click to expand...
Click to collapse
Just like anyone else, it all depends on what kernel you're on and what apps you have wakelocking. I've been using Clean 5.0 as my daily for months and the battery life lasts me throughout the day until I need to sleep at which point I plug in... but sometimes, I'm running into fast battery drain due to some apps going nuts on me or when Bluetooth is trying to link from a long distance (where the phone would heat up and drain like mad... btw this only happened to me twice in many months). After a reboot, it usually clears up and after a recharge, I'm back to 14 hours with 20% left at night. I'm not one to be anal about my battery drain if it lasts me until I sleep (because I have NEVER had a smartphone that would last me that long without plugging in... in fact, barely half the day would be when my device would need to be fed).
I'm using Perseus' latest with a few screen tweaks, no CPU or power tweaks, using Facebook constantly, Pulse, SMS/MMS, camera throughout the day, Next 3D launcher with all the fun animations running, YouTube, Pandora when driving (so my Bluetooth is on constantly)... let's just say I'm a heavy user. When my kids get a hold of my device, they run a bunch of games and drain around 10% by the time I get it back.
I am happy with the battery life on my Clean Rom 5.0/Perseus Note II. I won't fuss about it as long as it lasts longer than half the day because that is what I was used before upgrading.

Keep Your Battery Safe and Holding More Charge Over Time

Hey everyone,
The battery life for stock on this device is superb. People love to see how much they can get it out of it. Good for you. I've been there.
If you want to maintain higher battery capacity over time, and reduce the chance of your battery from failing, then read on...
I stumbled across an app on XDA called Battery Charge Limiter (https://forum.xda-developers.com/android/apps-games/root-battery-charge-limit-t3557002) and wanted to bring it up on here.
In short, it lets you limit the max % your device will charge to. This in effect saves cells in your battery and prolongs its life. This is proven. There are several reasons for this, but I'm not going to go into it. If you want, you can look into it at Battery University (the link is in the OP for the app).
MY EXPERIENCE
I have been using the app for about a week now, and I have had no problems with it. The default settings work perfectly with the Le Pro 3.
HOWEVER, if you are running stock you must allow the app to autorun and protect it from cleanup in the "Phone Manager". Otherwise you will need to manually start the app when you charge your device.
I have my device charge limited to 80%. I am easily getting a full day out of that charge (browsing, calls, SMS, and C.A.T.S gaming), usually charging once I hit around 25-40%.
I'm sure some of you will find this helpful. Feel free to click thanks so I feel good about myself :victory:
Cheers! :good:

I usually look for evidence like battery usage screenshot? A full-day usage should show something like 7-8 hours SOT with at least 2000mAh consumption.

It would also be better to charge the phone with a normal charger if you want the battery to last.
Normal charge when you are in no rush and the phone is sitting idle, Quick charge when its needed.

Personally, I couldn't be bothered as I change my phone every 8-10 months. Now waiting for Oneplus 5.

Joms_US said:
I usually look for evidence like battery usage screenshot? A full-day usage should show something like 7-8 hours SOT with at least 2000mAh consumption.
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Click to collapse
I'll take a look at my battery usage. However, I'm definitely not looking at the screen for 7-8 hours before I charge again. If you typically spend that much time on your phone (before charging again) then you'll probably need to fully charge it and drain it almost empty. If that is the case, then what I'm suggesting to do here is not for you.

[A520F] Battery problems

Hi guys!
I have a serious problem with a used A5 (2017) I got from some friends. The battery life is abysmal. I already changed the battery and it didn't change anything.
It is running on Android 8 Oreo. The most serious problem, I think, is that the phone even discharges when it's powered off. I tried using the latest hadesrom, but it didn't changed a thing. Lifetime is around 12hours, doesn't matter if I run some apps or just let it lie around in standby. I tried factory rests and some battery saving apps... nothing works. Is there any way to get better battery life? Thanks in advance!

RavenMM said:
Hi guys!
I have a serious problem with a used A5 (2017) I got from some friends. The battery life is abysmal. I already changed the battery and it didn't change anything.
It is running on Android 8 Oreo. The most serious problem, I think, is that the phone even discharges when it's powered off. I tried using the latest hadesrom, but it didn't changed a thing. Lifetime is around 12hours, doesn't matter if I run some apps or just let it lie around in standby. I tried factory rests and some battery saving apps... nothing works. Is there any way to get better battery life? Thanks in advance!
Click to expand...
Click to collapse
You could try the naptime app. But I don't think my battery life is any better than yours.

The a5 2017 has a famously good battery life.
I am not a heavy user - make and get few calls and mainly use it for receiving emails and a few texts plus a bit of web browsing.
Occasionally listening to podcasts.
3 days battery life is easy for me - reckon I could get 5 days if I just left it sitting quietly.
If it's going flat quickly even when switched off, it sounds like a fault somewhere.
Don't know what else to tell you.

robjg63 said:
The a5 2017 has a famously good battery life.
I am not a heavy user - make and get few calls and mainly use it for receiving emails and a few texts plus a bit of web browsing.
Occasionally listening to podcasts.
3 days battery life is easy for me - reckon I could get 5 days if I just left it sitting quietly.
If it's going flat quickly even when switched off, it sounds like a fault somewhere.
Don't know what else to tell you.
Click to expand...
Click to collapse
I never tried letting it sit, but if I just left mine alone it would last for days too. But if I am gaming on it, it will go down to around 50 percent at noon.

wow - 3 days life battery!! I can hardly get to 2 days, without heavy us - but I would never try to change the battery -> sounds too complicated

One thing that is worth looking at is the Always on Display (AOD).
I found it sucks a lot of power despite the claims that it 'doesnt use much'. It seemed to use around 1% an hour - I guess thats around a quarter of your battery in a day. So unless you find it useful either turn it off - or set it on a schedule for when you actually want it to be on.
Battery life is always sujective and depends on what your phone is doing - gaming will burn through a battery like nothing else.
The OP said the battery drains even when the phone is switched off - That sounds like a hardware fault. The battery will gradually drop when switched off - but it should take months for a healthy battery to drop much if the phone is switched off.

robjg63 said:
One thing that is worth looking at is the Always on Display (AOD).
I found it sucks a lot of power despite the claims that it 'doesnt use much'. It seemed to use around 1% an hour - I guess thats around a quarter of your battery in a day. So unless you find it useful either turn it off - or set it on a schedule for when you actually want it to be on.
Battery life is always sujective and depends on what your phone is doing - gaming will burn through a battery like nothing else.
The OP said the battery drains even when the phone is switched off - That sounds like a hardware fault. The battery will gradually drop when switched off - but it should take months for a healthy battery to drop much if the phone is switched off.
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1 percent an hour doesn't matter to me lol. I am a heavy user so I charge every day anyway.