what does Batterystats.bin do anyway? - AT&T Samsung Galaxy S II Skyrocket SGH-I727

So I'm getting terrible battery performance for a few days last week, about 10% an hour drop even if I turn off GPS and BT, only occasionally have WIFI on, have Juicedefender on, and rarely even use the phone. And FYI, I'm on sky ics speed 7.4.
Then I delete the batterystats.bin file (via BatteryCalibration after charging to 100%) and now for the past three days I'm down to 3% an hour, with BT and GPS on, etc.
How does a file result in so much battery loss?
Post Note:
OK - so I found lots of stuff out there saying that deleting this file doesn't improve battery life. I'm OK if that's true, but what then caused my improved battery performance?

batterystats.bin is the history you see when you go to battery use. It is there to persist through reboots. It does has come other low level data but nothing special.
http://forum.xda-developers.com/archive/index.php/t-1442989.html
You should never delete the file because our batteries (MAX17042 chipset) do not require calibration.
http://www.maxim-ic.com/datasheet/index.mvp/id/6621
How to accurately calibrate if you feel the need?
http://forum.xda-developers.com/showthread.php?p=18600161
As for your change in %, it can be chalked up to the fact your battery drain test was not a proper experiement. For instance, sometimes JuiceDefender keeps wake-locks active which keep the phone from sleeping and can cause increased battery drain. Depending on your location the active search for a better cell tower will use more battery if your phone is searching for a better signal often etc. Unless the environment was completely controlled and all variables accounted there is no actual way to prove causation.

Thanks promise. Still seems odd to me in my case but I don't dispute your answer. And you're certainly right that my test wasn't conclusive. I'll keep an eye open on this and see if I get similar results in the future.

I struggle with the same thing daily and I've stopped caring haha. Bought the T989 second battery / charger from Amazon.
Sent from my SAMSUNG-SGH-I727 using Tapatalk

promiseofcake said:
I struggle with the same thing daily and I've stopped caring haha. Bought the T989 second battery / charger from Amazon.
Sent from my SAMSUNG-SGH-I727 using Tapatalk
Click to expand...
Click to collapse
Me too, and I have no need to care about it right now as I get great battery life. So until my battery sucks I am not concerned with the magic battery calibration fixers

Related

Battery draining AGAIN

So i tried what you guys suggested. I rooted the phone, bought setcpu, using anttek to freeze running services, and used the battery calibration app still NOTHING. I just woke up and my battery was at 0 before i went to sleep it was at 62%!! How can it die in idle with no running servislces wi fi off gps off BT off i mean it has to be the battery right?
Sent from my LG-P999 using XDA App
I was just getting on here to rant about this. It seems that whenever I use the phone the battery gets warm and declines quickly. Lost over 40 percent battery over 2 hrs mostly playing mp3s
Sent from my LG-P999 using XDA App
This may or may not be related...just something to think about. For years I've placed my phone in the top drawer of my nightstand when sleeping. What I noticed when switching to Android is if I leave syncing on it will drain my battery. My theory is...in the drawer my data signal is very week or non existent. The phone dutifully tries to sync on that weak signal...searching for signal...fails and retries...or succeeds and transfers at a snails pace. Result dead battery. I've found that disabling data before bed results in less than a five percent drop. Just my experience.
If not then I'd suggest a phone swap.
Also...Why in the world did you start another thread? If we scatter all these x is wrong with my phone posts across multiple threads it really hampers the effort to solve the problem.
greengoldmello said:
I was just getting on here to rant about this. It seems that whenever I use the phone the battery gets warm and declines quickly. Lost over 40 percent battery over 2 hrs mostly playing mp3s
Sent from my LG-P999 using XDA App
Click to expand...
Click to collapse
Did you look for a solution before deciding to "rant"? Just curious...
greengoldmello said:
I was just getting on here to rant about this. It seems that whenever I use the phone the battery gets warm and declines quickly. Lost over 40 percent battery over 2 hrs mostly playing mp3s
Sent from my LG-P999 using XDA App
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Click to collapse
I've also noticed this. In the morning my battery life is decent but by the after noon I can do light web browsing (10-20) mins in an hour and loose over 15% tmobile told me that isn't good lol I have a new battery on the way. They shipped it out yesterday we'll see if that helps. Also my battery was dead when I got my phone did anyone else get one that couldn't even power the phone on?
bdkinney said:
Did you look for a solution before deciding to "rant"? Just curious...
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Click to collapse
Yes. Like the OP, I tried the solution of the person that is so called getting 20hr battery life under medium usage. Just doesn't seem feasible at all. And its really annoying to have to cut the data off completely to keep the phone from getting warm...
Sent from my LG-P999 using XDA App
greengoldmello said:
Yes. Like the OP, I tried the solution of the person that is so called getting 20hr battery life under medium usage. Just doesn't seem feasible at all. And its really annoying to have to cut the data off completely to keep the phone from getting warm...
Sent from my LG-P999 using XDA App
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Click to collapse
If you researched the problem and tried the solutions offered, then the logical next step is to contact T-mobile for a replacement. This is an early release of a new phone; there will be defects. And you don't have to settle for a defective device/battery. I can assure you, I get battery life on par with my previous phone (8-20 hours depending on my usage)..so, bad battery life isn't a problem inherent to the phone. And my phone doesn't get warm with data usage. It sounds like you might have a defective battery or phone. If you aren't satisfied, don't settle...make 'em make it right.
I get about 5-10% battery drain overnight most nights and I am not mindfull of what apps are running or what is on. My experience obviously differs from yours. I do get great service in my bedroom where the phone is overnight. The other night I did experience a bout a 60% drop when I left the phone in my daylight basement (underground). I get crappy 2G service in my basement and it looses signal a lot. I think it adds some credibility to the searching for service slowly killing the battery. maybe try putting the phone in airplane mode before going to sleep. That should give you some indicator.
I'm now are 28 percent after 3 1/2 hrs with the display only using 13% if that..
Sent from my LG-P999 using XDA App
greengoldmello said:
I'm now are 28 percent after 3 1/2 hrs with the display only using 13% if that..
Sent from my LG-P999 using XDA App
Click to expand...
Click to collapse
Just curious, does your phone feel hot right now?
You might have a bad battery or something. My first g2x rebooted constantly and drained the battery and got hot.
New one goes 8am to midnight with 20% battery left, on moderate usage. And even at the 20% left i can leave it overnight and it'll still have power in the morning.
greengoldmello said:
I was just getting on here to rant about this. It seems that whenever I use the phone the battery gets warm and declines quickly. Lost over 40 percent battery over 2 hrs mostly playing mp3s
Sent from my LG-P999 using XDA App
Click to expand...
Click to collapse
The phone is going to get warm is use because the CPU is under load and that produces heat. As long as its not overheating this is normal.
Have either of you tried the factory reset? That fixes the idle drain for most people.
Also... Your phone is going to drain battery faster while actually in use no matter what you do. The LCD and data connection are the biggest battery drain for smartphones. Until battery technology improves, there is nothing that can be done about this. But like I said try a factory reset and you should see your idle drain improve dramatically.
Sk8trfred said:
I've also noticed this. In the morning my battery life is decent but by the after noon I can do light web browsing (10-20) mins in an hour and loose over 15% tmobile told me that isn't good lol I have a new battery on the way.
Click to expand...
Click to collapse
Were you on wifi? Because if you weren't that much drain is within the norm. Web browsing = constant data connection = more power consumption = faster battery drain.
I had 10 hours of heavy use yesterday and had 25 percent left... 2.5 of those were in airplane mode cuz I was flying from Phoenix to Atlanta but I watched a movie during the flight and had music playing the rest of the time... during my layover which was 4 hours I browsed the web, watched a stream of the Celtics vs heat for a bit, more music... I plugged back in with 25% left and had 3h20m of screen on time... this battery is freaking awesome! I had drain issues initially but they went away and now I'm golden
when i did a factory reset, my phone was getting hot until i remember about the *#*# thing and changed that to wcdma/gsm auto. then my battery life got better.
Get juice defender. Its work wonders for me and my buddies thunderbolt actually makes it through the day now
Sent from my LG-P999 using XDA App
Battery Drain is mostly Cellular radio
I too am have been looking for a way to have this phone last at least 8-12 hours with normal usage, but I don't think its going to happen unless there's some major update to the radio firmware coming in 2.3 Gingerbread..
All the evidence seems to suggest two culprits... for battery drain.
- First is the 4G radio, look around at almost ALL 4G enabled phones (whether on GSM at&T Tmo or Verizon), all eat your battery, from the very beginning EVO 4g, Verizon Thunderbolt, Mytough 4G every single one of those phones has the users complaining about horrid battery life. You can confirm this by looking at the battery usage on the G2X and you'll see that the number one use is Cell Standby (that's the cellular radio) on my phone its anywhere between 35% to 60% of total power used.... on kmy nexus one it used to be the display.
-Second, Tegra 2 is more power hungry , granted its a mobile SoC but its mainly designed for Tablets and such with beefy batteries, this is the reason that the Atrix comes with a 1950MaH battery, you can try and use SetCPU to lower the speed, but I have had minimal success.
Here's a test , when you don't need your phone put it on Airplane mode, for 24hours and watch HOW LITTTLE the battery drains.. reason the cellular radio isn't on..
bdkinney said:
This may or may not be related...just something to think about. For years I've placed my phone in the top drawer of my nightstand when sleeping. What I noticed when switching to Android is if I leave syncing on it will drain my battery. My theory is...in the drawer my data signal is very week or non existent. The phone dutifully tries to sync on that weak signal...searching for signal...fails and retries...or succeeds and transfers at a snails pace. Result dead battery. I've found that disabling data before bed results in less than a five percent drop. Just my experience.
If not then I'd suggest a phone swap.
Also...Why in the world did you start another thread? If we scatter all these x is wrong with my phone posts across multiple threads it really hampers the effort to solve the problem.
Click to expand...
Click to collapse
I agree. These battery threads are driving me nuts.
Go in the other million threads and read
The thing that is strange to me is how quickly these phones charge. It seems to go from 0% to 100% in well under an hour. Was thinking I should try charging it while off (well, screen w/ battery only).
What???? Having the phone on makes my battery drain? WTFO?!?!?!
Seriously though, I have not experienced bad battery life on this phone. Last night I left my phone off the charger, gps, wifi and wifi calling on, and when I went to bed at 1030 I had 64% battery. At 700 this morning I had 54% battery. Only a 10% drain for me overnight, or a little more than 1% per hour.
All I've done to achieve this is the following (and I realize that supposedly you no longer have to condition Li-ion batteries):
-when I got the phone, I didn't charge it but instead let the battery die completely to where I couldn't even turn the phone on.
-charged the phone overnight w/o turning it on.
-let battery die completely again.
-charged phone overnight w/o turning it on.
-let battery die completely again.
-charge and use phone normally.
I've also rooted the phone and used Ti Backup to remove most all of the bloatware except wifi calling, but otherwise it's the stock rom.
I typically get an entire day of my normal use on this phone. If I use it alot, I have to top off the battery w/ my car charger on my way home from work. This isn't unusual. I had to do this w/ the blackberrys I owned and my evo when I was on Sprint. The battery life doesn't seem any better or worse for me than any other smartphone I have owned, and it's certainly better than my evo or my wife's evo, and both of those were rockin' custom roms and uV kernels.
jayohwhy said:
when i did a factory reset, my phone was getting hot until i remember about the *#*# thing and changed that to wcdma/gsm auto. then my battery life got better.
Click to expand...
Click to collapse
forgot about doing this lolz
...also you can also change it in the mobile network settings

Battery life varies widely with same amount of usage

I don't understand why somedays my phone and battery will last all day plus some. Then other days battery is worthless (only 9hrs or so) . My routine is the same day to day. I restart my phone every morning when I pull it off the charger. I realize apps and sync etc have affects on battery life. I'm not a newb. Example today phone came off charger 7am, it is now 10:30pm and I have 42% left. This happens one or two days a week. Other days by 6pm I need a charger. Never had a "moody" battery (phone).
Sent from my HTC Sensation 4G using XDA App
I think your usage is different..Although you think you always do the same thing but actually don't..I have the same experience..I was curious for the first time but later i found that day i disable my data and phone works on gsm not wcdma.Also may be different day different apps launched
Do you notice any difference on how often the device is awake? That is what makes the difference from what I've noticed.
90teggy said:
I don't understand why somedays my phone and battery will last all day plus some. Then other days battery is worthless (only 9hrs or so) . My routine is the same day to day. I restart my phone every morning when I pull it off the charger. I realize apps and sync etc have affects on battery life. I'm not a newb. Example today phone came off charger 7am, it is now 10:30pm and I have 42% left. This happens one or two days a week. Other days by 6pm I need a charger. Never had a "moody" battery (phone).
Sent from my HTC Sensation 4G using XDA App
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Click to collapse
From my experience, the battery life does vary as you mentioned. The best way to test is to turn off sync to minimize the amount of battery drain variation. This might tell you if the battery is consistently following along with your issue. Also turn WiFi off if possible. Hope this helps.
Sent from my HTC Sensation 4G using XDA App
ctscloud said:
From my experience, the battery life does vary as you mentioned. The best way to test is to turn off sync to minimize the amount of battery drain variation. This might tell you if the battery is consistently following along with your issue. Also turn WiFi off if possible. Hope this helps.
Sent from my HTC Sensation 4G using XDA App
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Click to collapse
The thing is you also have to keep tabs of the apps that you use, most of them BTW don't close/exit completely. (Also abattery drain)
The battery stats are the problem. Seem inconsistent.
How about the possibility that you're in different locations from day to day, and some hours of the day, your signal may be poor, making the phone look for a better signal, draining battery?
My Best Guess is radio modem SUX
zoth said:
The thing is you also have to keep tabs of the apps that you use, most of them BTW don't close/exit completely. (Also abattery drain)
Click to expand...
Click to collapse
This is true. one day I woke up to find my battery completely drained although it was supposed to be idling, I removed a couple of apps I installed the day before that I thought was the culprit and it didn't happen again.
download WatchDog its an app that watches your other apps for insane amounts of memory use and battery drain. Should find the culprit app thats causing this random drain
link to app: https://market.android.com/details?id=com.zomut.watchdoglite&feature=search_result
a lot of people dont believe in task killers cause they truley arent needed and to the normal user can cause more harm then good but i like the fact knowing if im not using it, its not running.
Hamsn said:
First day I got 1d 8h something with 8% left. Next day I got 1d 0h 8m with about 35% left. But I think its deteriorating day by day, not sure yet why this is happening although I made no changes since day 1, data connected all the time or WiFi connected, email sync default settings of 15min, default settings for friendstream, weather, calendar and other widgets.
One more thing I realized, even if you turn off your phone, it is like hibernate, the apps still remain in memory, so I restarted, then I had cleared memory and the battery performance seems improved, still have to confirm this, once I complete I'll post back.
But even now I am getting more than a day, at least 24 hours with the same settings as above.
Click to expand...
Click to collapse
So I agree with the variation, like the poster 90teggy, even I've been on the same routine, but the battery acts differently.
caliber177 said:
How about the possibility that you're in different locations from day to day, and some hours of the day, your signal may be poor, making the phone look for a better signal, draining battery?
Click to expand...
Click to collapse
+1
also explains why person A and B have very different results for the "same usage"... where they live/work etc will have different signal strength. I am lucky, I have pretty good signal both at work and home, so my phone doesn't have to churn thru as much battery.
Get yourself a Anker battery and you your problem with fast draining will be over..
Check this:
I realized that battery drains faster when carried in pocket or somewhat is dynamic state. When I keep my phone flat on a surface, it will stay there hours together without a single % drop in battery.
Only if I carry along, move it, etc. the battery seems to drain.
Just try to observe this and confirm it to me.
Hamsn said:
Check this:
I realized that battery drains faster when carried in pocket or somewhat is dynamic state. When I keep my phone flat on a surface, it will stay there hours together without a single % drop in battery.
Only if I carry along, move it, etc. the battery seems to drain.
Just try to observe this and confirm it to me.
Click to expand...
Click to collapse
As you move around it's probably seeing & trying to lock on to different transmitters which can cause increased drain.
Different transmitters?
No, its just when its in Pocket, either you sit or stand, drain will be considerable.
Same you keep it on a flat surface, it stays at the same %
My Sensation gets great battery life most of the time, but in relation to your comment about putting it in your pocket - sometimes when I walk around with my Sensation in the pocket of some shorts (where it can swing around a bit more than in jeans) the next time I take it out of my pocket it's very hot and seems to have frozen up or be in some kind of reboot loop. This has happened to me five or six times ... with different pairs of shorts
Get the battery pack for Htc Evo, root your phone and delete batterystat.bin. Worked for me.
Hamsn said:
Different transmitters?
No, its just when its in Pocket, either you sit or stand, drain will be considerable.
Same you keep it on a flat surface, it stays at the same %
Click to expand...
Click to collapse
The WiFi & mobile signals will be weaker when in your pocket because your body will block them a bit. That will increase drain but to what extent is debatable
Sent from my HTC Sensation Z710e using XDA App
On my stock Sensation battery drain on idle with display off is 200mA average.
Barely lasts a day on full charge with light use.
On my HTC HD2, which is rooted with Android rom installed, drain on idle is around 40mA average. It can last two days in idle and easily all day with light use.
Something is draining Sensation battery hard. Can't find what. No matter if phone sits stationary or moving in my belt pouch.
I suspect some TMos apps running in background.

When is battery drain significant enough to be considered defective

Since I had the phone, battery drain has been ridiculous. Around ten to fifteen percent per hour. After recently switching to humble 1.5 my drain is nearly 30% an hour. I will try to recalibrate soon but should I consider getting another battery? I was listening to mp3s and checking email during that hour and about ten minute of gps. But the drain still feels a bit excessive. What do you think?
Sent from my SCH-I510 using XDA Premium App
What kind of signal do you have? Under battery use, is there anything that's been using a disproportionate amount of battery? What do you keep on as far as services and connections, like GPS, 4G, etc?
My signal is usually fine with 4g a majority of the day. It was struggling a bit today in the underground and I had to turn off and on the data to get a solid connection a few times. I usually keep on the data and gps or bluetooth on depending on the situation. Usually just a combination of those. Data is the only one on all day. Nothing looks unusual under the battery usage except for the display using 82%, but it was like that on stick as well.
Sent from my SCH-I510 using XDA Premium App
What was your brightness set to?
Sent from my gingerbread gummycharged gbe 1.9rc2.3 charge.....bro.
Automatic.
Sent from my SCH-I510 using XDA Premium App
braveally said:
My signal is usually fine with 4g a majority of the day. It was struggling a bit today in the underground and I had to turn off and on the data to get a solid connection a few times. I usually keep on the data and gps or bluetooth on depending on the situation. Usually just a combination of those. Data is the only one on all day. Nothing looks unusual under the battery usage except for the display using 82%, but it was like that on stick as well.
Sent from my SCH-I510 using XDA Premium App
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Click to collapse
Well, 4G and GPS together can use power pretty aggressively. Granted, 30% an hour seems excessive and may be caused by something else.
A couple things you could try - force 3G (you can do this manually or via a downloadable widget I believe) instead of 4G and use location services instead of GPS (unless you just need GPS). I know these aren't as "attractive", but can provide similar services with less power consumption. This will at least let you see how much consumption is due to these more power intensive services.
If you still have issues, you may have a battery problem (or may need to try reflashing a ROM, stock or otherwise).
charlie_c said:
Well, 4G and GPS together can use power pretty aggressively. Granted, 30% an hour seems excessive and may be caused by something else.
A couple things you could try - force 3G (you can do this manually or via a downloadable widget I believe) instead of 4G and use location services instead of GPS (unless you just need GPS). I know these aren't as "attractive", but can provide similar services with less power consumption. This will at least let you see how much consumption is due to these more power intensive services.
If you still have issues, you may have a battery problem (or may need to try reflashing a ROM, stock or otherwise).
Click to expand...
Click to collapse
Yeah, that's a tough swallow just for the sake of battery. I can compromise on the location service, but really want 4g since it is so widely available for me. I will attempt to recalibrate the battery and then possibly reflash if I feel it's still a problem. Is there another rom you recommend that can possibly mitigate this issue. I tried Gummycharged on my phone but it is really buggy (launcher force closes every few minutes) on my device for some reason.
braveally said:
Yeah, that's a tough swallow just for the sake of battery. I can compromise on the location service, but really want 4g since it is so widely available for me. I will attempt to recalibrate the battery and then possibly reflash if I feel it's still a problem. Is there another rom you recommend that can possibly mitigate this issue. I tried Gummycharged on my phone but it is really buggy (launcher force closes every few minutes) on my device for some reason.
Click to expand...
Click to collapse
Depends on if you want a Froyo or a Gingerbread ROM. I was running the Eclipse Froyo ROM with the imoseyon kernel overclocked and undervolted slightly and had excellent stability, performance, and battery life. I just switched to a GummyCharged GBE 1.9RC2.3 but haven't really decided yet if I'll stay.
Probably Froyo
charlie_c said:
Depends on if you want a Froyo or a Gingerbread ROM. I was running the Eclipse Froyo ROM with the imoseyon kernel overclocked and undervolted slightly and had excellent stability, performance, and battery life. I just switched to a GummyCharged GBE 1.9RC2.3 but haven't really decided yet if I'll stay.
Click to expand...
Click to collapse
Thought about it for a while and will be sticking with Froyo for now until Gingerbread has been officially released from Verizon. I'm hoping that will allow for most of the bugs to be reconciled. I read in various post that GB still has some issues. Stability, performance and battery life are my primary concerns.
On a side note:
Don't quite know if I am ready to start overclocking and changing voltages. Is there a recommended thread to get some basic knowledge on working with the voltages and what not. I only have experience overclocking desktops and graphics cards.
Thanks for following through with me on this as well.
braveally said:
Thought about it for a while and will be sticking with Froyo for now until Gingerbread has been officially released from Verizon. I'm hoping that will allow for most of the bugs to be reconciled. I read in various post that GB still has some issues. Stability, performance and battery life are my primary concerns.
Click to expand...
Click to collapse
I was right there with you, but I read that these Gingerbread leaks also allowed you to use Media Hub with HDMI out (which it does), and my credit was about to expire
braveally said:
On a side note:
Don't quite know if I am ready to start overclocking and changing voltages. Is there a recommended thread to get some basic knowledge on working with the voltages and what not. I only have experience overclocking desktops and graphics cards.
Thanks for following through with me on this as well.
Click to expand...
Click to collapse
No problem, I used the clock and voltage settings in this post but only used the Temperature profile. Had no issues. I tried straying from it but started getting crashes so I went back to it. If you're looking for only battery improvements, you could skip the 1300 Mhz OC and just underclock and undervolt. That whole thread is devoted to an OC kernel though so feel free to read through and it may shed more light on it.
Hope that helps.
Awesome. Thanks
Sent from my SCH-I510 using XDA Premium App
Automatic brightness will use more battery than setting it to one brightness and manually adjusting it as needed. Automatic brightness requires activating and polling the light sensor, then increasing/decreasing the brightness. On top of that, I've found that automatic tends to keep the screen brighter than it needs to be for me in most situations.
Good point
imnuts said:
Automatic brightness will use more battery than setting it to one brightness and manually adjusting it as needed. Automatic brightness requires activating and polling the light sensor, then increasing/decreasing the brightness. On top of that, I've found that automatic tends to keep the screen brighter than it needs to be for me in most situations.
Click to expand...
Click to collapse
I think your right. I had a similar issue with auto screen brightness with my old Touch Pro 2. I will try this among the things written earlier to see if it has any impact.
5% drain in last twenty minutes. Just Lte on and no activity but writing this post.
Sent from my SCH-I510 using XDA Premium App
20% drain per hour of screen on time is the norm for Charge. Throw in the typical idle background drain of 4% per hour, and you'll see why 3 hours of screen on time per day is the max you can get.
Now then, the drain due to active screen use is expected and can't be improved. However the idle drain is unusual and *probably* can be fixed by future Samsung firmware. (gingerbread is not fixing it yet). I'm guessing its poor idle radio management, which is why undervolting the core does nothing to help.
If the idle drain can be greatly improved, the Charge could then expect to get 4-5 hours of screen on time per day, and I'd be a happy camper.
braveally said:
5% drain in last twenty minutes. Just Lte on and no activity but writing this post.
Sent from my SCH-I510 using XDA Premium App
Click to expand...
Click to collapse
I'm in the same boat here with Humble 1.51.
4G at 4 bars, -84dBm, surfing the net, 30% back light, no gps, no wifi, 2 gmails syncing -- 20%/hour.
Brightness is at the lowest setting for me, Twitter, Facebook, and Beautiful Widgets syncing hourly, 2 Gmail accounts with push notifications, Google Voice, and possibly a few more background apps. I'm at just over 4 hours being unplugged with 20 min. of screen on time and my battery is at 75% and was charged fully when I unplugged it. I have not had any major use as far as playing a game or major web surfing either.
I have good luck with imoseyon's lean kernel 0.13.3 and gummycharged fe. I had very poor battery life before i tried that combo.
Sent from my SCH-I510 using XDA App
Go back to Stock. Completely wipe everything (including SD Card ... this is optional probably, but it's what I did. Make sure you back up on your computer). Then re-flash your rom. I had this problem after switching initially from Froyo to GB. My battery life is amazing now with the new GC GBE 2.3.
Scrappy1 said:
20% drain per hour of screen on time is the norm for Charge. Throw in the typical idle background drain of 4% per hour, and you'll see why 3 hours of screen on time per day is the max you can get.
Now then, the drain due to active screen use is expected and can't be improved. However the idle drain is unusual and *probably* can be fixed by future Samsung firmware. (gingerbread is not fixing it yet). I'm guessing its poor idle radio management, which is why undervolting the core does nothing to help.
If the idle drain can be greatly improved, the Charge could then expect to get 4-5 hours of screen on time per day, and I'd be a happy camper.
Click to expand...
Click to collapse
I've seen you post this on other threads, and it just proves that different users of the Charge have different experiences. I think a lot of it has to do with the network.
I have had my phone off the charger for 10.5 hours now at home, which varies between a moderate and weak signal. It is still at 81%, which means it has had a 1.8% per hour battery drain. It has been mostly idle, but I've sent a few texts and quickly browsed a website. If it was truly left alone, it would be even less than 1.8% per hour. This clearly debunks your one-size-fits-all claim of 4% idle battery drain.
As for screen on time, I've done 2 hours of screen on time during an 8 hour day and still had ~48% left. Doing the math I could get ~3.85 hours of screen on time in a 15.3 hour day. My battery drains quite evenly with no sudden drops, so this would be a fairly accurate and realistic expectation for me. If I really needed to, I should be able to get ~4.55 hours of screen on time in an 8 hour day. This is based on my high of 1.8% per hour idle drain and 18.8% per hour screen drain. Or, if I did a 10 hour day (like I do quite often), I could do ~4.35 hours of screen on time. Once again, your sweeping generalization of 3 hour max screen on time certainly doesn't apply.
I don't have any special or magical configuration either. I leave 4G on, which sometimes drops to 3G at my house since the signal is weak at times. I leave the GPS and bluetooth on at all times. I have the screen brightness set on automatic. I also have Gmail setup with one push email account and leave auto/backround-sync on at all times.
I run Imnuts' PBJ voodoo kernel with a stock deodexed EE4 system and got rid of some of VZW's bloatware. Mind you, I haven't noticed any significant difference in battery life between the fully stock stock EE4 and the current configuration.

Cell Standby Battery Drain

I've searched about a million times in 900 different threads, but I still can't find a fix to this issue.
I first noticed this when I flashed MIUI onto my phone. I would get cell standby and cell idle at about 40-50% of battery usage each. Display wouldn't even be shown on the usage! I then figured MIUI wasn't worth it to me, so I flashed CM7. I tried both morfic's and faux's many kernels, nothing seemed to fix the issue. If I would turn the airplane mode on, I'd get battery drain of only like 2%/hour.
So I figured there was something wrong with the CM7 port, so I tried g2xtreme and other GB ROMs, same thing. Finally, I just checked a froyo ROM, same thing again!
So at this point I'm clueless and thinking the phone is completely a POS, but anyways. I'm about to nandroid restore stock 2.2 firmware, and try updating through the LG Mobile Support Tool.
But I have my doubts that this will fix it. I'm curious though if maybe I'm getting this drain because I'm with WIND Mobile in Canada? And this is for the T-Mobile G2X (they're the same phone and both companies use the same radio frequencies). But maybe there's something written in these ROMs to tell the phone to look for the T-Mobile network? Which I obviously won't be able to find in Canada.
Can someone help me locate these settings, if they exist? Or can someone with a Wind phone maybe toss me the WIND stock firmware? Or let me know what ROM they're using without said issue?
Thanks guys!
Edit:: In low signal areas the phone drains like 15-20% per hour, in high signal areas the phone is still pulling like 8%-10% an hour and I'm not even using it! And the weird thing is it only shows 1% time without signal! Something is seriously wrong with this firmware.
Search for betterbatterystats on XDA, install it, enable battery monitoring in MIUI (if that's your daily rom), leave your phone alone for a few hours, then open BBS and look at the partial wakelocks under "since unplugged." There you'll see what's killing your battery.
Everyone experiences worse battery life when reception is bad, but you are still getting terrible drainage in good areas, which means there's something other than reception killing your battery.
erikikaz said:
Search for betterbatterystats on XDA, install it, enable battery monitoring in MIUI (if that's your daily rom), leave your phone alone for a few hours, then open BBS and look at the partial wakelocks under "since unplugged." There you'll see what's killing your battery.
Everyone experiences worse battery life when reception is bad, but you are still getting terrible drainage in good areas, which means there's something other than reception killing your battery.
Click to expand...
Click to collapse
I tried that before, and had a crapload of apps "frozen" with titanium backup.
I'm going to try this again, and I'll post a screenshot this time because I don't think I actually understood what betterbattery stats was trying to tell me last time.
If anyone can help me decode it later that would be great!
Just noticed that there's barely anything under partial wakelock that's noticeable.. RIJL Telephony is the highest with 1m 1s 15%.
But it's not increasing very much, only when I get a text message. However, I've dropped about 7% since my last message, and cell standby is increasing climbing up my battery usage from 33% to 42%. It went from 620uah to 657uah.
Edit:: I reset battery stats cause I was unsure if it was corrupted stats. I started at 17% 40 minutes later I'm at 12%. Phone was off 90% of the time. I made a 2.5 minute call and it used 41uah, while cell standby still dominated with 65uah.
However, I turned my phone on for 5 minutes, making total usage 45 minutes, but had the brightness set to max, and in that five minutes it only used 1uah.
Am I missing something here? At this point I don't know if my numbers are normal or not anymore... I'm going to try draining the battery, charging to full, wiping battery stats, and calibrating and see what happens but 65uah to 1uah is a huge difference, I would've thought display would use a bit more than that.
I noticed this morning that having the phone with airplane mode OFF, that my battery dropped 10% in 57 minutes, and after turning the airplane mode ON, the battery dropped 1% in the next hour and 30 minutes. I checked battery stats and nothing was waking up my phone. Anyone have any other suggestions?
I'm going to flash miui and leave it without any apps installed then try this experiment again.
Sent from my Flashback HC-TAB using XDA Forum App
I find these threads interesting because I am always looking for better battery life.
I am running EB 2.3.3
I uninstalled Set CPU and uninstalled Juice Defender. From my experience both hurt my battery life.
I never bothered to measure in airplane mode, because i use my phone to much.
My battery life improved dramatically during stand-by. 1% to 2% drop per hour with wifi on and a slightly bigger drop with wifi off.
I completely wiped the phone before installing EB and the used Titanium Backup to reinstall my apps without the data. I believe some of my previous battery life issues came from restoring data from certain apps.
I have the same phone/carrier. Do you leave 3G turned on? I feel it rapes my battery throughout the day. When I turned it off, it lasts pretty long.
Another problem I have though, is the drain when it is OFF. I went to bed with it at 90% juice and turned it off. I woke up 8 hours later, and it was at 65% when I turned it on. wtf. This only happens sometimes thou.. Other times it doesn't drop too much.
aceofserenity said:
I have the same phone/carrier. Do you leave 3G turned on? I feel it rapes my battery throughout the day. When I turned it off, it lasts pretty long.
Another problem I have though, is the drain when it is OFF. I went to bed with it at 90% juice and turned it off. I woke up 8 hours later, and it was at 65% when I turned it on. wtf. This only happens sometimes thou.. Other times it doesn't drop too much.
Click to expand...
Click to collapse
I experience the exact same issue. But for some reason my battery life is more or less the same with 3g off. So I feel like my phone is constantly searching for a different signal or something? I mean if airplane mode affects my battery life that drastically reducing consumption by like 9%/hour then there must be something up
Sent from my LG-P999
Everyone who's been telling my phone is not sleeping is correct.
Only program is is that my phone's battery stats doesn't say which app is waking the phone? It lists Telephony as #1 with 1m 1s of awake time, and everything else is minuscule. There's gotta be something the phone isn't telling me :S Could it possibly be a hardware issue?
Or is there a better way I can narrow down this issue? I'm in the process of removing all apps.
Just curious, did you 'train' your battery?
aceofserenity said:
Just curious, did you 'train' your battery?
Click to expand...
Click to collapse
Nope, but it's Li-Ion and my impression was these do not need to be trained.
I just emptied it to complete 0 yesterday, and charged it to complete 100% then calibrated it. Today though it was still horrible battery life until I completely wiped and flashed MIUI 1.9.23 then Trinity kernel brand new. I'm installing apps 1 by 1 to see which one caused me so much darn grief :S
All batteries are Li-ion nowadays, but I still feel after 'training' my battery for a week, they last substantially longer than new ones, fresh out the plastic.
aceofserenity said:
All batteries are Li-ion nowadays, but I still feel after 'training' my battery for a week, they last substantially longer than new ones, fresh out the plastic.
Click to expand...
Click to collapse
I did end up conditioning it, not sure if it helped or if it was cause I flashed a new rom, but everything is finally working in order now
Sent from my Flashback HC-TAB using XDA Forum App
Battery drain fixed?
aceofserenity said:
Battery drain fixed?
Click to expand...
Click to collapse
Yes, battery drain is fixed. Also, I was on a completely different baseband for some reason, I was on the o2x baseband, fixed that JUST now, I think that was a part of the reason I was draining my battery like instantly. It was probably looking for a GSM signal!
Thank you for all your help
A simple *#*#4636#*#* can change that.
aceofserenity said:
A simple *#*#4636#*#* can change that.
Click to expand...
Click to collapse
Yeah I set it to WCDMA Only. Battery life has been awesome lately.

Guess, I get to ask for help. [Ticket Closed for Now]

Background: I have had phone 11 months. I am very familiar with how the battery drain is while it is stock (WiFi ON all the time). battery lasted ~16h which is plenty for me.
Rooted phone, Battery Life on AR14 and IceColdSandwich (and others) was around 20h with WiFi on all the time and light use.
Recent Kernels (anything IceColdSandwich 3.0.0+ or AR 23+ (haven't tested between 14 and 23) cause a base of around 50mA of drain even when phone is locked. Battery life is ~8-10hours WITH NO USE. I have tried these ROMs without installing ANYTHING on them with the same results.
Current Widget does not identify an offending program from what I can tell.
WiFi off, the phone lasted 2d9hr of pretty light use.
I first started looking into WiFi when I forgot to turn off airdroid and unplugged the phone for 3 hours. I found AirDroid still running but could not connect to it via laptop or desktop until I tinkered with the phone a bit more and the WiFi connection cycled.
However during this time, the charge lost on the battery was a reasonable rate, and after the WiFi connection cycled it dropped like the usual rock.
What I've tried:
WiFix
WiFi polling interval increase
Cleaning/checking battery cover contacts
Changing battery covers
Battery Calibration (which is a myth from other reading I've done)
A couple of different programs like Juice Defender.
On the list to do:
Try a different Kernel
Root my friend's phone and trade him hardware (he says he never uses WiFi, so it won't be an issue for him)
/wrists
Thanks for all the suggestions and help so far. I understand that the problem is pretty obscure and seems rare.
on icecoldsandwich ive seen quite a few people show an improved battery draining using lordmods newer bfs kernel. maybe give that a try and report back?
http://forum.xda-developers.com/showthread.php?t=1450962
kernel: http://goo.gl/ZqBZl
btw, very good informative question. its heart warming usually we get 'my battery sucks yo, fix it!' haha
Here is some irony.
Exitz ICS AR25 has been on the phone for a couple of days and has lost essentially 10% per hour when not on the charger (been off work in my house) After the 4th day, I installed AirDroid and AngelCamera. I took it off the charger last night...
92% 6 hours later AND the phone has been awake(?) all night...
Seems I left AirDroid 'running' but couldn't connect to the phone through AirDroid until after the WiFi cycled...
I will see how the drain is today. I'll out of the house all day tomorrow (half a day in Denver), toggle off the wifi for a day at home, and then try your suggestion Darunion.
Here are a few screen shots (first two are old), and honestly, I don't know how much I trust the battery stats.
IceColdSandwich 2.0.0 pretty much shows that battery life I have been used to for a long time including before rooting. Not AMAZING, but not fail. (WTF Proximity Recaibrator 29% of Drain on a 16 hour day?) Also note this is about the same rate of drain I experienced with Existz AR14 last week. Light use and ~16-19 hours of battery life. Not amazing, but I can live with it.
IceColdSandwich 3.0.0 pretty much shows the battery life I have been getting with any ICS roms since.. well 3.0.0 was released. Oh and the voice call that is 37% of drain lasted less than 10 minutes.
Existz AR25 (someofthedrain.png) the steep drop was a 20 minute phone call...
And Finally Airdroidwtf.png is the same install three nights later (this morning) If I could get battery drain like THIS on a regular basis...
Anyway, I'll keep trying to isolate this down to the specific 'area' of the phone that is causing it....
Edit: and as for Darunion commenting about the information I've included... I'm a patient person, I don't want to be a drain on the community, and I have no issue trying to solve a ROM, APP, Radio, RIL, Or watever issue. I'm only posting because the issue isn't unique to a ROM but is unique to a time frame AND the issue is not solveable via Google or XDA search
Right now it is looking like the 'extra' drain on newer ROMs is directly related to the wireless being on*.
Right now the phone is at 1day 19 hours with 14% left and the wireless was only on for the first couple of hours this charge cycle.
I never thought there would be such a considerable difference between battery usage on any ROMs.
I'm going to continue looking around and trying to solve things, and I haven't quite made it to trying the Kernel, Darunion. It is on the list after I toggle WIFI on and off throughout a day.
*The rest of this post is just back-story I have ran the phone on stock for 11 months before rooting it and during that time, I got used to leaving the WIFI running all the time simply because the battery always lasted through my longer days and my-typical light-use. I'm near WIFI that my phone connects to about 80% of the time.
So after rooting, I had a little increase in battery life and I never changed this habbit, or more to the point, I was leaving WIFI on as to make it one less variable in drain while testing various ROMs and different build dates.
Wulamoc said:
Right now it is looking like the 'extra' drain on newer ROMs is directly related to the wireless being on*.
Right now the phone is at 1day 19 hours with 14% left and the wireless was only on for the first couple of hours this charge cycle.
I never thought there would be such a considerable difference between battery usage on any ROMs.
I'm going to continue looking around and trying to solve things, and I haven't quite made it to trying the Kernel, Darunion. It is on the list after I toggle WIFI on and off throughout a day.
*The rest of this post is just back-story I have ran the phone on stock for 11 months before rooting it and during that time, I got used to leaving the WIFI running all the time simply because the battery always lasted through my longer days and my-typical light-use. I'm near WIFI that my phone connects to about 80% of the time.
So after rooting, I had a little increase in battery life and I never changed this habbit, or more to the point, I was leaving WIFI on as to make it one less variable in drain while testing various ROMs and different build dates.
Click to expand...
Click to collapse
I was on battery for around 13 hours yesterday with wifi on for at least 8 hours of that and plugged my phone in with 51% battery remaining.
ST3ALTHPSYCH0 said:
I was on battery for around 13 hours yesterday with wifi on for at least 8 hours of that and plugged my phone in with 51% battery remaining.
Click to expand...
Click to collapse
Yeah, I know this isn't a typical issue for most everyone, and am not implying so.
Likely it will end up being something very specific to the two WIFI networks I am at for 80% of the time OR something else that is very specific to my circumstances.
Wulamoc said:
Yeah, I know this isn't a typical issue for most everyone, and am not implying so.
Likely it will end up being something very specific to the two WIFI networks I am at for 80% of the time OR something else that is very specific to my circumstances.
Click to expand...
Click to collapse
Have you, by chance, removed and reinstalled your back covers? I know it's unlikely, but since they contain the antennae, maybe they've come a little loos, resulting in higher imepedence connections.
ST3ALTHPSYCH0 said:
Have you, by chance, removed and reinstalled your back covers? I know it's unlikely, but since they contain the antennae, maybe they've come a little loos, resulting in higher imepedence connections.
Click to expand...
Click to collapse
I have not specifically toyed with the covers as part of trouble shooting. I will be sure that I look at them after my battery finishes charging on WIFI.
It does seem to be more a software difference, (I've casually be at this for the better part of 2 months) as I have seen expected performance when flashing back to a ROM I've used.
Thanks, I like being able to limit variables and this will be one I check before charging the phone again.
(What I'd really love to do is convince my brother or one of two friends who have the Inspire 4g to let me root their phones so I can trade them phones for a week and really isolate out hardware issues
fyi if you are still running icecoldsandwich. 6.2 just was released. Maybe give that a try?
Darunion said:
fyi if you are still running icecoldsandwich. 6.2 just was released. Maybe give that a try?
Click to expand...
Click to collapse
Right now, I'd like to figure out WHY my WiFi is so bad on battery drain with later AOKP releases.
I'll try to rule out hardware issues (I'll look into antenna and MAYBE convince a friend to let me root their phone and trade them for a week... if not then covers at least.)
But likely this is something about newer releases and how my WIFI is setup. I don't live in a high-density area, so it's not because of too much wifi trafficz (I can barely see a 2nd wifi with any device and it's on the opposite end of the frequency choices.... by my settings)
Anyway, I am a very patient person, so I'll continue working on this slowly so that I can be thorough and find the real cause of the problem.
What I would wish is for someone to point me in the direction as to how WiFi MIGHT drain the battery so hard for later releases but not earlier. I'll be reading up more on logcat and how to read it in regards to wifi... but searching and reading is hard because 'wireless' and what not are very vague terms
Now at 1% (still) and 2d9h... is MORE than double my record on the first roms I tried after rooting OR my stock rom. and MORE than quadruple my record on any of the newer roms
I've swapped battery covers with a friend this past weekend, and the WiFi being on still drains the phone considerably (~8%/hr) when turned on. So if it's a hardware issue, it's not in the battery cover.
Wifi and blue tooth are very hard on the battery regardless. But 8% an hour seems pretty steep tho.
I would start by getting the current widget in Google market and put in on your home screen to monitor your Mili-volt ussage. If its running high like the 200+ constantly you have a lot of drain going on. When in sleep mode it should drop down to 0mv up to 8mv. If it stays high in the sleep mode you have apps waking your phone from sleeping. Which causes tremendous drain.
Next I'd try removing apps that have wifi permissions. To see if that drops your mv ussage.
Drop your notifications to less frequent times on your email and Facebook.
Remove any task managers or juice defender. They run constantly.
Google + is a massive battery drainer. Remove or limit notifications and sync as much as possible.
Also running wifi fix apk could also help. If you are knowledgeable enough you could also edit the build.prop to set the wife scan at a less frequent rate as well.
Last but not least get a toggle button widget for wifi and turn it off when not using.
I'd you follow these steps this will drasticly decrease your battery drain.
Sent from Soundwave aboard Nemesis.
dj sampson said:
Wifi and blue tooth are very hard on the battery regardless. But 8% an hour seems pretty steep tho.
I would start by getting the current widget in Google market and put in on your home screen to monitor your Mili-volt ussage. If its running high like the 200+ constantly you have a lot of drain going on. When in sleep mode it should drop down to 0mv up to 8mv. If it stays high in the sleep mode you have apps waking your phone from sleeping. Which causes tremendous drain.
Click to expand...
Click to collapse
Thanks for taking the time for this response!
I started by running current widget for about a week and with a 3 different roms AR23(?), IceColdSandwich 2.0.0, IceColdSandwich 3.0.0.
I was stock for 11 months, and ICS2.0.0 was a little better than battery drain than stock. AR23 and ICS3.0.0 were terrible and pretty much ran a constant 50ma drain asleep or awake as a baseline.
I'd really like to figure out what the difference is with the older AOKP and the newer AOKP, but that may never happen.
Next I'd try removing apps that have wifi permissions. To see if that drops your mv ussage.
Drop your notifications to less frequent times on your email and Facebook.
Remove any task managers or juice defender. They run constantly.
Google + is a massive battery drainer. Remove or limit notifications and sync as much as possible.
Click to expand...
Click to collapse
I've been testing with stock roms since a couple weeks before I posted this thread. This is because current widget didn't really show any specific program causing the issue, so I wanted to make sure that I didn't have some issue from my installed programs.
The most I've installed (out of necessity is AirDroid and AngelCamera) in the past few weeks. Both were installed when I ran without wifi on one charge for 2d9hrs.
(I don't have a google+ account, I don't have juice defender or any task managers aside from the stock rom)
Also running wifi fix apk could also help. If you are knowledgeable enough you could also edit the build.prop to set the wife scan at a less frequent rate as well.
Click to expand...
Click to collapse
I'll do this and see if that helps things. Thank you
Last but not least get a toggle button widget for wifi and turn it off when not using.
Click to expand...
Click to collapse
This is likely going to have to be my solution. Just run cell data all the time unless I am doing something specific like downloading files or uploading pictures.
OR
Maybe I can convince my friend to let me trade him phones (root his and nand backup and then restore all his stuff to my phone) and see if it is about the same drain. His phone was bought a couple months after mine AND from a different vendor, so it isn't going to be out of the same manufacturer's lot.
I'd you follow these steps this will drasticly decrease your battery drain.
Sent from Soundwave aboard Nemesis.
Click to expand...
Click to collapse
Thanks again. I'll definitely try the wifix along with the rest of your suggestions that apply
I'm in the same boat you are. I'm running ics aospX ar-26 and I can barely get mine to last from 8 til 4. Wifi is pretty prevelent around here and I leave it on most of time. I guess I could try turning it off til I need it. Anyway I'll be following this thread.
Sent from the heavens using XDA
You also might consider reading the threads on calibrating battery after flashing roms. I made the mistake of flashing a rom @ 40% battery. It jacked my stats all up. The new rom thought 40% battery was actually 100%. It had my stats all screwed up too. Except mine was Bluetooth. Showed running at 60% of battery ussage. So don't trust that system tool. Because the display is almost alway gonna be the biggest drain on the battery. An app called "spare parts" is a little more accurate.
I ran the gambit on this one finnally got my battery back to normal for me anyway. I've never seen a full days use with out charging. Get about 14 hours Max now. But the calibration steps is the way to go.
Sent from Soundwave aboard Nemesis.
dj sampson said:
You also might consider reading the threads on calibrating battery after flashing roms. I made the mistake of flashing a rom @ 40% battery. It jacked my stats all up. The new rom thought 40% battery was actually 100%. It had my stats all screwed up too. Except mine was Bluetooth. Showed running at 60% of battery ussage. So don't trust that system tool. Because the display is almost alway gonna be the biggest drain on the battery. An app called "spare parts" is a little more accurate.
I ran the gambit on this one finnally got my battery back to normal for me anyway. I've never seen a full days use with out charging. Get about 14 hours Max now. But the calibration steps is the way to go.
Sent from Soundwave aboard Nemesis.
Click to expand...
Click to collapse
I actually have read quite a bit about battery calibration... and before I flashed a new ROM, I've made sure that current widget has been tracking 0ma for a while. (Only reliable way to be sure you have a full battery from what I can tell)
The batterystats.bin file and calibration has been ... contended in a number of places, mostly stating that when taken off the charger 'full' the battery stats file is overwritten... which makes calibration a non-issue (assuming that you occasionally charge your phone for a while after it hits 100% from time to time)
The problem is that the WiFi mA draw is HUGE compared to what it should be (in theory from reading other people's logs), and it's not because of the battery cover. AND It's not as bad in older AOKP ROMs than it is in newer ones. SO it could be a hardware issue exacerbated by a change in how WiFi is handled, but the hardware issue was never noticed because the battery life Stock was sufficient for my needs.
I've been busy working so I haven't been able to continue troubleshooting the phone (damn my patience), but Mondayish, I'll likely have traded my phone with a friend and root it and flash a new rom and see how the drain is with completely different hardware from a different vendor from a different lot of phones.
I had a similar issue with wifi. I changed the build.props wifi supliment scan from every 15 seconds to 180 and used the wifi fix manager apk. That seemed to help. Coupled with a proper battery calibration and I'm back to my display being the major battery draw.
So don't know if that helps but it seemed to work out my bugs.
Sent from Soundwave aboard Nemesis.
This I can do right now.. and given I'm on the same, unmodified AR24 release, I can observe it for the weekend before I annoy my friend about his phone.
Seems the WiFi scan interval was already set to 100... moved it to 180 anyway.
I used to have this issue. I could literally see my battery draining while I was using it. I keep wifi on most of the time. I recently purchased an anker battery online. It is AMAZING! My old battery wouldn't last more than 6 hours or so. Right now I'm at about 14 hours on this charge, and I'm at 47 percent. Try swapping his battery for yours for a day or two. Another thing to try is different radios if you're losing power to cell standby.
Zombies ate my Inspire
DynamiteRave said:
I used to have this issue. I could literally see my battery draining while I was using it. I keep wifi on most of the time. I recently purchased an anker battery online. It is AMAZING! My old battery wouldn't last more than 6 hours or so. Right now I'm at about 14 hours on this charge, and I'm at 47 percent. Try swapping his battery for yours for a day or two. Another thing to try is different radios if you're losing power to cell standby.
Zombies ate my Inspire
Click to expand...
Click to collapse
The phone ran for 2days 9hours with WiFi off and lasts for 8-10 hours with WiFi on. I am pretty sure that it's not a Radio/RIL or a Battery capacity issue. ;(

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