yashsingh1/xdaforums huggingface dataset:
[Samsung Epic 4G Touch] Raistlin1:
Running pretty much stock ICS FF18, just have agat safe recovery/kernal installed. Yesterday I left Wimax on all day and when I went to charge it last night it had about 28% left. I made several phone calls, many texts/whatsapp messages, reading emails and using twiitter/fb a couple of times.

The battery life on this is not the greatest, for example, I forgot to turn off wifi when I left my house the other day, well my battery dropped about 30% in just a few hours. I now find that just leaving Wimax on all day is actually better and pretty much on par with just having 3G on, I prefer wifi at home but if I forget to turn it off it kills my battery.

I was so used to Blazers 4.1 battery life, the battery lasted forever and I could leave wifi, bluetooth etc on all day. Just hoping for the ROMs to start incorporating the recently released source so that we can get better battery life on these great ROMS.
[Samsung Epic 4G Touch] daniel4653:
This is all known information. That's why you use custom roms that have much better battery life.
[Samsung Epic 4G Touch] NeoWave:
I had same issue here with custom rom FF18 touched by SGS3. Went back to EL29, FF18 is glitchy and slower anyway.
[Samsung Epic 4G Touch] delfin2003:
Confirmed, factory reset battery drain exists.
[Samsung Epic 4G Touch] squshy 7:
OP, why don't you put up a screenshot of your battery graph? The expanded one, not the one that lists the percentages.

There are a number of reasons why this could be happening. One of my biggest drainers on CM9 was Google login service, turned out the "keep this device backed up with Google" in the backup and reset settings was completely preventing my phone from going to sleep. This is but one example.
[Samsung Epic 4G Touch] ogeretla:
I am getting decent battery life with the 'super galaxy rom' almost on par with the caulkin el29 build I was using... LOVE it!
[Samsung Epic 4G Touch] someguyatx:
You guys need to quit crying wolf and figure out what is really draining your battery. Maybe your google drive is syncing, or you have facebook running, or email is pulling too often, ICS does not kill battery rogue apps and wrong settings do.

Try this https://play.google.com/store/apps/details?id=com.asksven.betterbatterystats (search xda for other versions)

and this https://play.google.com/store/apps/details?id=nextapp.systempanel&hl=en

Figure out whats waking up your phone and running when its not supposed to be and until you have data STFU
[Samsung Epic 4G Touch] cp320703:
seconded, attached is the battery stats for an average day for me on ff18 based goodness.... these "problems" are all able to be resolved rather easily with very little effort... this is not a paid tech support forum and no one is going to spoon feed you when solutions have been posted countless times in countless hysterical threads like this
[Samsung Epic 4G Touch] carole6m:
My phone is not rooted and this is the battery life I'm getting after the OTA with light use. With regular use I get at least 25-30 hours.
[Samsung Epic 4G Touch] kanekz:
Just curious, what's your display time. From the looks of it, doesn't seem like much. But still, that's pretty impressive nonetheless.
[Samsung Epic 4G Touch] bjonesy77:
ICS works really well for some, but for others it renders the phone completely useless. I'm one that it won't work for as well. The battery life is **** and 4g connectivity is non existent. As a result, I'm back to EL29/GB until a patch is made.

I spent 4 days after teh OTA was released trying to find fixes, trying to make it work, using different kernals and modems, but had no success. I posted about it many times and more or less was told that I was doing it wrong.

On that not, good luck mate. Here's to hoping for a patch from samsung soon. :good:
[Samsung Epic 4G Touch] nim6us:
Here's the screenshot of my Battery info, I don't know how to get the extended report you were talking about, can you walk me through it or is it an app? There's also the result of CPU-SPY. It appears the phone isn't hitting deep sleep.. what's the cure?

Sorry for the attachments to new to post links
[Samsung Epic 4G Touch] eep2378:
A few question: Are you logged into/using latitude location services in Maps? Do you have autosync on for email/gmail/facebook or other accounts? If so, that would explain deep sleep problems and high OS usage. Also your on stock non-rooted ICS ota update, right? Stock Samsung kernels have notoriously been "bad". Rooting your phone and installing a custom(i.e more capable) kernel may be an option.
[Samsung Epic 4G Touch] someguyatx:
Something is keeping your phone from going into deep sleep. Here are my similar screenshots. I have just 45 mins of screen time today but gps nav took a hit on it more than normal so android os is up. This is aokp stock battery but I get similar results on stock and various roms. Its time to root, install better battery stats and start tweaking my friend.
[Samsung Epic 4G Touch] someguyatx:
I would start with a touchwiz based rom as a noob. The best start would be a rooted FF18 and go from there. On roms people seem to like the Blu Kuban but it wasn't my style, I ran Wicked Sensations for a few weeks, also Venum Ice and Mijjz Goodness are very good. Just read the instructions in the first post for whatever you want to flash. Y
[Samsung Epic 4G Touch] nsxla:
I like agat's work, I would try one his releases, the battery drain is NOT caused by ICS I can confirm this. My phone goes into deep sleep just fine.

I am running tFE22_0.1.0

It has bugs, wifi disconnects no matter what you set it too, MMS won't receive unless you are on wifi. yahoo messenger messages you won't get unless you are on 3G/4G Other than that i like the speed of the rom (using stock launcher) I've tried different radios to no avail. You can try his new kernel with that rom.

---------- Post added at 11:49 PM ---------- Previous post was at 11:38 PM ----------

btw fix the title of your post - its complete rubbish!
[Samsung Epic 4G Touch] sbeekman:
Agat built some great kernels I've been getting better battery life than on gb
[Samsung Epic 4G Touch] tim1089:
Have you tried the battery trick. You charge your phone to full charge open back phone pull out battery unplug from charger. Let it sit for 5 minutes with it out. Then put it back in turn on. It did help me but I got the most from agats kernel

Using AGATS_v.0.2.3 kernel On Samsung Epic 4G Touch on xda premium
[Samsung Epic 4G Touch] mafaesto:
This is the kind of attitude that should be punished, I am having the SAME EXACT BATTERY ISSUE so deal with it. You are not all knowing, there are plenty of people that are complaining and experiencing this problem. My girlfriend was the one who pointed it out, at first I didn't believe her until I realized that my battery was dropping about 15-20% or more per hour of non use/limited use. I think you need to calm down and keep it to yourself. This issue is frustrating to say the least, people DO want ICS, there's a reason why we have updated.

Also, I do NOT want a custom rom, I have yet to find any custom roms that are worth messing with (my opinion) although I am willing to flash a kernel if there is a better suitor.
[Samsung Epic 4G Touch] nim6us:
While I'm open to a custom ROM I agree it pisses me off people saying it's not ICS update. If I have a stock phone, stock everything, and the only thing that changes is I upgrade to ICS.. IT'S THE ICS UPDATE!! Yes it may be how some program, app, or turns out even charger interacts with ICS, but the root cause is the ICS update.
[Samsung Epic 4G Touch] someguyatx:
Haha I never said I was all knowing but I have tried quite a few leaks and roms. Try my suggestions that you quoted, you would be surprised what runs and updates in the background and drains your battery that you dont know about. The update process also changed the way things sync and apps run since gingerbread.

Honestly though the update is fine but the update process is flawed. On phones just like computers putting a new os on top of an old one is never a good idea. Start fresh with a clean install, download your apps again, let it settle, monitor your battery stats and running apps and report back in a few days.
[Samsung Epic 4G Touch] squshy 7:
To be perfectly honest OP, if you don't know that tapping on the battery graph presents to you an enlarged graph with corresponding time lines for screen on, awake, charging, etc., then I don't know why you are jumping to (or even if you're ready for) rooting and flashing.

I suggest learning more about your phone, and Android in general. What you have effectively informed us is that after a factory reset your battery is fine, but once you load all your data, apps, and set your preferred settings, your battery life is going into the toilet. What does the common denominator sound like there?

Agreed, there are definitely flaws to FF18. Many of them, in fact. But you shouldn't attribute your base operating environment as being the cause of all your issues, considering all of your issues occurred after you affected that environment.

A more appropriate observation would be, for instance, pointing out what interactions, apps, data, settings, etc., are causing a bug to arise.
[Samsung Epic 4G Touch] squshy 7:
As a follow-up, OP, my post is not meant to be insulting, nor even a criticism. It's simply that when I see this

Followed by this:

It raises some flags. When I say you should educate yourself on your phone and Android in general, I really do mean that. A common mistake made by many not intimate with Android or xda is that custom ROMs will magically provide all the answers you need.

Becoming more intimate with your device and your OS will ultimately provide you a MUCH richer and more rewarding experience. In addition, many of the discussions in threads for ROMs concentrate around that ROM (as they should); there is an assumption that the people participating in those threads are savvy with their phones.

Judging based on what you have told us so far, I would venture to guess that many of the questions you would have would likely go ignored or unanswered: an example of having a dulled Android experience.

Just read OP, read and read and read some more. Ask questions in the Q&A forum. Hang out in IRC. People are likely to help you; if they weren't, I wouldn't have written this follow-up post ;)
[Samsung Epic 4G Touch] nim6us:
So after all my fear mongering, the culprit is my SD card. I pulled it out, ran CPU SPY and BOOM! I achieved DEEP SLEEP! I reformatted the the SD card, then added folder by folder. I'd added a folder, then ran CPU SPY, and did that until I found a couple folders that were preventing Deep Sleep. To everyone experiencing my same problem try running your phone without an SD card and see if that narrows down your problem. From what I've read it's different for everyone, so I'm not claiming this fix will work for everyone who is experiencing battery drain. This is just what worked for me. Also it just put my phone in Deep Sleep. I'll get back with you tomorrow to see how the overall battery drain is affected.
[Samsung Epic 4G Touch] someguyatx:
Thats a start at least you are willing to learn. The big question is, what was in those folders? Apps running from sd? A folder full of pics or mp3 won't cause the phone to do anything.
[Samsung Epic 4G Touch] PhAkEer:
I haven't bothered reading through this thread yet... but let me start with some extremely obvious (to me) questions...

1) What do you expect to be the biggest drain on your battery when you had the screen off the entire time that the battery usage was being logged..???

If you had your screen off and your phone in your pocket.. than the display would register as next to nothing on battery consumption.. if you expect otherwise than I question your logic.

2) How is this bad news?

That would be good news to me if I had battery drain, for that more clearly tells me where to go and adjust things...

3) What would you like the biggest usage of power be from???

The OS IS THE PHONE. .. . . . ftmp

4) What does your data usage breakdown look like during this time?

I'd be more alarmed that while not using my phone, cell standby was drawing more power than phone idle... sound's like you spent much time trying to acquire a signal unsuccessfully.. was wifi or wimax on without a signal during time despite it's attempts to keep getting one??
[Samsung Epic 4G Touch] adipradana:
I have the same problem with the OP. I think the problem is with the wifi. When i use wifi, it sucks the life out of the battery. On wifi, the phone seems having a very hard time going to deep sleep. On the other hand, when i switch to 3g, battery seems to be way way better, and the phone seems to go to deep sleep normally.

Didn't have this problem with gingerbread, and i have less apps installed then when i was on GB.

Anyone can confirm that it is wifi?
[Samsung Epic 4G Touch] cp320703:
Its not wifi directly- eg my battery life is just fine when I'm at home on a wifi connection - its the constant scanning that comes with wifi looking for something to connect to when you don't have wifi... in short turn it off when you're not using it and you'll be just fine. The same thing will happen if you're in a really bad sprint service area and your phone has to constantly scan for service.
[Samsung Epic 4G Touch] Apk07:
Been running blazer FF18 and agat's kernel, and I've yet to experience any intense battery drain. I would say my ICS experience uses like 10% more battery than GB, and that could be due to any number of things
[Samsung Epic 4G Touch] PhAkEer:
@apk07

in general ICS is more battery demanding but if it seems excessive than it probably is.

A couple recommendations, well, one really.

I try to NOT adv. for people, but SQLite Editor has revealed a lot of very useful things to me. EG, my PSM starts at 90 even though it can't go above 50. I have loosely configured so it's not annoying... but it helps me force low lighting and blablabla

great buy.

I have a question for any and all that have the issue of WiFi going from idle to dead, regardless of setting.

do all/any of you use kobridge WiFi_sleep_wait script? I feel like (although it's been awhile) I remember that having something to do with putting wifi to bed and was wondering if you guys have tried toggling between ko on and off to see if it makes a difference.
[Samsung Epic 4G Touch] nim6us:
Also an interesting update, I had mentioned this post earlier about you're phone charger affecting your Deep Sleep. Well turns out that was is another contributing factor. My previous HTC phone had a microUSB plug and the wires were already ran behind my nightstand, so I figured since it fit my SGII and it charged, then no worries right... WRONG! I reset CPU SPY before bed, threw it on the charger, and checked in the morning. My phone was charged, but it never hit Deep Sleep the whole night. The post I linked talks about different chargers and different reasons, but basically the phone thinks it's being plugged into a USB device, and while it's charging it never goes to Deep Sleep because it's waiting on data from that USB device. Thank sweet Jebus my phone did start hitting Deep Sleep again once it was off the charger. I'm going to run some more tests with my official Samsung block charger, car charger, etc. This would explain why some chargers seem to charge faster than others. If a phone never hits Deep Sleep it's still active while it's charging. Anyway, I know this thread is all over the place, I'm just trying to confer what is helping me identify my battery drain.
[Samsung Epic 4G Touch] PhAkEer:
yeah, and maybe think about adding [Solved] or [NVM] in the title...

there are already so many people starting realizethat it isnt ICS that's a problem, it's treating ICS like it's GB that's a problem. Let's keep this.trend alive.

And besides, that's what us nerds are here for :D
[Samsung Epic 4G Touch] prguzman1978:
I must say that a factory reset yes resolved my battery issues...
[Samsung Epic 4G Touch] rocket321:
Factory reset resolved my battery issues as well - has been good for several days and have re-installed many apps, phone is properly entering deep sleep. Only real bug is I have to keep WiFi on during sleep or it doesn't reconnect upon wake up. Hoping for a fix from samsprint in the coming weeks. Also I do have a SD Card installed with a bunch of folders/files on it.
[Samsung Epic 4G Touch] someguyatx:
Some chargers are faster than others because they have higher output. The little Samsung brick is a great quick charger with 1amp output.
[Samsung Epic 4G Touch] PhAkEer:
Yeah, I've only used two OEM cables and both of them, occasionally the phone charge fast... too fast... and then it lost its charge just as quickly....

that night I let it trickle charge off the Xbox. It acted quite a bit better if you guys could try that as well :)

(want to see on this none oem cable?)

lmao too bad it's with this charger plugged in..
[Samsung Epic 4G Touch] fcjr77:
I used CPU Spy and it it is telling me that 200 MHz is running 72% of the time and deep sleep is 16%. I am new to this battery stuff, so I am not sure what it means by the 200MHZ. Thanks.
[Samsung Epic 4G Touch] cp320703:
200MHz refers to the CPU, it clocks itself down when not in use
[Samsung Epic 4G Touch] fcjr77:
So should that percentage be lower or am I having some battery issues. My battery lasts about 6 to 7 hours on low usage.
[Samsung Epic 4G Touch] Dchibro:
If your phone is sitting there not being used the majority of the time, then deep sleep should be your highest percentage. Having 200mhz that much above deep sleep means you have something wakelocking your phone and keeping it from entering deep sleep as often as it should.
[Samsung Epic 4G Touch] wraith404:
This is exactly my problem, and solution, thanks. I was not deep sleeping and could not figure it out. I removed my SD card, and BAM, instant deep sleep. Now to go down your path and figure out what I can put back on it.
[Samsung Epic 4G Touch] PhAkEer:
put anything In... just get sqlite editor by speedsoft .. thn turn off any setting...

my power saving mode starts at 95% :)
[Samsung Epic 4G Touch] wraith404:
Ah, let me be more specific. I didn't factory reset, I just removed my SD card. That fixed deep sleep. So now I've put it back, and formatted it, after format and reboot deep sleep still works. Since, I've restored a few directories and rebooted, still works. Going at it little by little to see if it's a specific directory. Rather than restore my DCIM folder, i let it recreate it and i'm copying pictures back into the camera folder now. Then Ill test again and copy more.
[Samsung Epic 4G Touch] prguzman1978:
This will help too if you go to settings/wifi/advanced/keep Wifi- on during sleep/ apply a check on- Never (increases data usage)...
[Samsung Epic 4G Touch] chris.carstens:
I have been following this thread. Here is what I am seeing:

My phone goes into deep sleep, with no troubles when on 3g. However, when I'm on WiFi, my phone seems to stay in the 200 MHz range (as reported by CPU Spy) almost all the time with the screen off sitting unused. I tried changing the advanced Wifi setting to keep wifi on during sleep to "only when plugged in." This changed to me being on 200 MHz about 50% of the time, and 50% of the time for deep sleep.

What is the best way to see what is keeping the phone from going into deep sleep? I tried the betterbatterystats app, but to be honest, I'm not very sure of how to read the data it is giving me. Any suggestions/recommendation you have would be greatly appreciated.

Thanks. :)
[Samsung Epic 4G Touch] PhAkEer:
I've been testing a couple things that may increase battery, but I have not tested the sleep aspect. You could, if you like.

The easiest to replicate is this one..

Its "/system/etc/wifi/wpa_supplicant.conf" and by default has five more lines than this. All 5 scan (unnecessary) things every (whatever you've set) interval. I figured this is all it needs though ;)
[Samsung Epic 4G Touch] garwynn:
Did I perhaps miss another image?

EAPOL_FLAGS are EAP flags and depending on configuration might be necessary for the 2nd layer tunnel to stay intact.

(The older RADIUS configuration at my office requires eapol_flags=2)

update_profile is a standard line and I don't believe has anything to do with a scan process.

Neither does the device, which tells it which device (& driver) to use when executing wpa_supplicant binary.

Fast reauthorization shouldn't be done on an interval - if I understand correctly it's only when you lose/re-establish connection to a network.
[Samsung Epic 4G Touch] PhAkEer:
all I did was erase the p2p lines and the one that said app scan

everything else is as was.

got a five hour screen on cycle, immediately after a dirty flash, dispite a 20 percent whack on a reboot.. and WiFi was on the entire time and being used.

that's all I know ;)

edit: oh yeah, it should be mentioned that when I did this and WiFi set to stay on during sleep or when charging it was fine.

set to never and it started getting warm and I didn't like it one bit.

edit 2: I see the miscommunication now... this is an after picture, so to know what mine looks like now.
[Samsung Epic 4G Touch] garwynn:
P2P lines shouldn't have any effect unless you're actually using them.

And ap_scan=1 will

definitely

cut battery usage if you can remove it.

Others, like me, need it to properly work with hidden SSIDs.

On average running Wi-Fi at work/home and 3G in between I still average 16 hours with a few phone calls and just checking emails.

The biggest burner for me was the LCD display and brightness.

As a result of pocket dialing I just hit the power button and force it off every time out of habit.
[Samsung Epic 4G Touch] PhAkEer:
you mean sixteen hours total, right?

cause if you're getting sixteen hours of screen time than we definitely are having a longer talk :p
[Samsung Epic 4G Touch] geolemon:
Before accusing "you guys" of "crying wolf", look at the evidence.

Earlier, I created a thread with this information you are saying is excluded, and that thread simply died - probably because there's a lot of "hey, you are right, that shouldn't be happening" in there.

http://xdaforums.com/showthread.php?t=1778042

Also, note what you are saying runs contradictory to the change that actually occurred. Here's a timeline (I'm sure the OP is likely the same):

1) Got E4GT phone.

2) Configured E4GT settings

3) Lived with E4GT settings for nearly a year. No issues, good battery life, smooth sailing.

4) Updated E4GT to ICS using the stock Samsung update - which maintains settings.

5) With no other changes, observe changes in behavior of phone - at a high level, battery life - and investigating at a lower level to try to explore and explain (and troubleshoot)

If it was settings that changed, or apps that were installed - then I'd say what you claim has merit. After all - that's "the usual".

But that's not what happened. The thing that changed was (...drum roll...) installing ICS.

For that matter, I saw some battery life reduction for the brief period I installed AOKP prior to reverting back to take the stock upgrade.

I've got two BetterBatteryStats traces on that thread if you think you have some insight to offer. It would be greatly appreciated.

Note that I'm also observing a few other apparently misbehavior-items of the system, which might also be symptoms, or they might be causes, on that thread.

Definitely not crying wolf.

---------- Post added at 09:15 PM ---------- Previous post was at 09:13 PM ----------

I've got an SD card in mine, I've observed no appreciable gain with it removed.

I did the upgrade with it removed, reinstalled my apps with it removed.

All that's on the card is about 45gig worth of music in folders.

I'm getting about 6-7 hours less battery life with stock ICS than I did on stock GB, with the same settings and apps, SD card or no SD card.