Just got the I777 - AT&T Samsung Galaxy S II SGH-I777

... about two weeks ago and I love it so far, best phone I've ever owned hands down. The only problem I've experienced is the battery... for example after a full charge, I surfed the web non stop on 4g (hspa) for an hour and 30 minutes and my battery is already down to 65%. Is this normal? My brightness wasn't even high, it was slightly less than half... seems kinda weak considering just about everyone says this phone has the best battery life of all high end Androids.
I'm on 2.3.6
My kernel version is 2.6.35.7
My build number is GINGERBREAD.UCKK6
Thanks in advance!
Sent from my SAMSUNG-SGH-I777 using Tapatalk

Hour and a half of screen on time, not to mention data consumption, yeah that's about right. It's all based on how much you use the phone. Here's a screenshot of my battery life:
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Light use
Miui 2.1.6
Siyah 2.6.6i kernel
Supercharger V6 1000hp script
I average 20hrs of battery life, this was just a test to see how good the battery is.
Sent from my SGH-I777 using xda premium

It may be some other stuff as well. Look in the link below to see if you have any of the known battery drainers. I was suprised at what was causing a lot of my battery drain and after deleting the offending apps/services, I'm getting great battery life.
http://forum.xda-developers.com/showthread.php?t=1308030

2.3.6 on the GS2 has known battery life issues. You can Google "2.3.6 battery life issues" to find links that I'm unable to post here. When originally on 2.3.4, I experienced great battery life - on par with my old iPhone 4. When I upgraded to 2.3.6, battery life was significantly reduced whenever I was connected to wifi (battery drained with the screen off as though I was actively browsing on it).

I concur with what audiotweaker states. You can always go back to a 2.3.4 kernel, easiest way is bundled with a ROM that currently loads that kernel.

jermneedscoffee said:
I concur with what audiotweaker states. You can always go back to a 2.3.4 kernel, easiest way is bundled with a ROM that currently loads that kernel.
Click to expand...
Click to collapse
Um, kernel has NOTHING to do with it. UCKK6 or UCKH7, they all use a 2.6.35.x kernel. Changing the kernel will do NOTHING to change the drain - it's a problem somewhere in the system image, not the kernel.

I did a simple root without any custom ROM using this method: http://forum.xda-developers.com/showthread.php?t=1311081
I had auto upgraded to 2.3.6 from 2.3.4. Using the method in that thread will root your phone + downgrade the OS back to stock 2.3.4.
I am having better battery life since then because of
- ability to better optimize the battery after rooting (Titanium bkp, access to Alarms log through BetterBatteryStats, ability to disable auto start of certain tasks using Super Manager, etc)
- OS 2.3.4 instead of 2.3.6
- misc other battery optimization techniques floating around on xda

Technically, 2.3.6 in general isn't the problem - it's the UCKK6 build specifically.
I don't think the I9100 2.3.6 bases have as many issues - BTHID still broken, but at least it seems like they have less drain issues.

Entropy512 said:
Technically, 2.3.6 in general isn't the problem - it's the UCKK6 build specifically.
I don't think the I9100 2.3.6 bases have as many issues - BTHID still broken, but at least it seems like they have less drain issues.
Click to expand...
Click to collapse
(This was about the first week when I got the phone before I rooted)
I actually was able to talk to a few people at my local AT&T retail store. A few of my friends actually work there as well. I was talking to them about the battery life and they told me it wasn't actually 2.3.6, it was the build that comes with the phone (factory).
Then I got home, flashed a CFW. Battery now lasts about 2 days with just basic web browsing and texting.

Related

Poor Battery life "ICS"

After updating ICS i root it straight forward, and experience the poor battery life, I waited 3 weeks and calibrated many times, and turn off all the unnecessary services as suggested in the different forums but result is same, before ICS, i was happy with 3 days battery life, but Now, it just keep the juice for 1 day that sux!
Notice, Android system is taking all the juice and its keep "Awake" why not in sleeping mode ? when not in use.
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&
for me i use my mobile in ordinary mode for 2 1/2 days... 1 day if i use continue wifi
I recomend you to use this kernel http://forum.xda-developers.com/showthread.php?t=1521309,because default ICS kernel suck. I'm using I-Scream build 10 (which is a lite version of Nordic .562 FW) with this kernel,and battery drain is about 2% in 4 hours.Also,you should make different profiles (with setcpu),for example when screen is off set profile to 122-460 mhz,conservative mode.
georgeiulian89 said:
I recomend you to use this kernel http://forum.xda-developers.com/showthread.php?t=1521309,because default ICS kernel suck. I'm using I-Scream build 10 (which is a lite version of Nordic .562 FW) with this kernel,and battery drain is about 2% in 4 hours.
Click to expand...
Click to collapse
Can we use that kernel on official ICS and locked bl and is there any fc, problem with wifi or bug?
Sent from my Neo V with supercharged ICS ^^
yes,it works with official ics. If you don't have wi-fi issues,flash it dirrectly,but if you have wi-fi issues install first this kernel http://forum.xda-developers.com/showthread.php?t=1609617,don't boot after install,and then flash Inteks kernel (without booting between installs). I'm using it on MT15i,and i don't have any lag or wi-fi issue. I don't know if it works with locked bl,because i have unlocked bootloader.
I think after update (wipe) phone is collecting info about battery and some other stuff, that's why your phone is awake all the time or maybe some app drains your battery?
Take a look at my stats.
zakk87 said:
I think after update (wipe) phone is collecting info about battery and some other stuff, that's why your phone is awake all the time or maybe some app drains your battery?
Take a look at my stats.
Click to expand...
Click to collapse
Notice, Only Android system is taking all the juice, so its clear not other applications are sucking the juice !
I should tweak a little more, and will inform later ...
@georgeiulian89: why you posting him custom kernel? this is not problem in kernel.
zmbutt said:
I should tweak a little more, and will inform later ...
Click to expand...
Click to collapse
Nothing to tweak. Besides, what did you tweak so far?
Stock ICS shouldn't drain so much. Do a clean flash again.
Android OS should report higher usage than in GB, but not that high. Do a reflash.
Madfysh said:
@georgeiulian89: why you posting him custom kernel? this is not problem in kernel.
Click to expand...
Click to collapse
Because i've had the same problem,and this is the way i've solved it.
georgeiulian89 said:
Because i've had the same problem,and this is the way i've solved it.
Click to expand...
Click to collapse
Stock, clean ICS doesn't drain so much.
If it does, ether some modifications are made, or something is messed up while flashing.
Op. You said you've disabled some services and calibrated many times have you thought of just letting it settle.
Flash again, rather than trying to undo everything that you've done. This time give it a couple of days to calm down then investigate if needs be.
Sent from my MT11i using Tapatalk
Iam useing KA17.2 battery life just for one day, and iam pretty happy
Madfysh said:
@georgeiulian89: why you posting him custom kernel? this is not problem in kernel.
Nothing to tweak. Besides, what did you tweak so far?
Stock ICS shouldn't drain so much. Do a clean flash again.
Android OS should report higher usage than in GB, but not that high. Do a reflash.
Click to expand...
Click to collapse
Tweak = disabling unnecessary services, ie Location, autosync etc,
I think Flash will be my last option.
Madfysh said:
Stock, clean ICS doesn't drain so much.
If it does, ether some modifications are made, or something is messed up while flashing.
Click to expand...
Click to collapse
I didn't flash it using flash tool, i Update it with SEUS.
& everything was smooth.
mpiekp said:
Op. You said you've disabled some services and calibrated many times have you thought of just letting it settle.
Flash again, rather than trying to undo everything that you've done. This time give it a couple of days to calm down then investigate if needs be.
Sent from my MT11i using Tapatalk
Click to expand...
Click to collapse
I will try that,
Thanks for suggestion everyone
Problem Solved
I follow the guide from [Solution] [ICS] Solve battery drain issue on 4.1.A.0.562 [05/07], seems like the baseband 70 was sucking all the juice, after downgrading to Baseband 64 the magic is back
Check out
woow, nice mobile network signal. I have bad signal but on BB70 phone works 3 days.
Stock kernel from Sony is good enough to,
you have a charger right peeps?
our phone is not a car, like when you start him and automatic recharge

[Q] App to set CPU mode?

Hey guys! Just wondering, if any anyone has heard something about an app, which lets me change the CPU mode, from Quad-, to tripple-, dual-, or singlecore mode...
I haven't found any, yet. (Yes, I have used the invention, called "Google" and consorts)
Thanks in advance for good answers!
BTW: If you are interested why: My battery lasts about 3-4 hours.... -.-
I'll post a screenshot in a moment. I constantly recharge, but not for long, because I am constantly occupied with all sorts of stuff, so it may seen like the batery life is good, on some parts of the graph...
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Sent from my GT-I9300 using xda app-developers app
The system's scheduler, pegasusq, automatically powers down cores when they are not needed.
Reducing the core count has an adverse effect since they need higher clock speeds to compensate and thus require more power.
Your issue most likely is data network and/or apps misbehaving.
Please install BetterBatteryStats (free APK here in XDA) and show it's output after such a 4-5hour cycle.
Did you by any chance disable Fast Dormancy or have you checked if your provider supports it?
d4fseeker said:
The system's scheduler, pegasusq, automatically powers down cores when they are not needed.
Reducing the core count has an adverse effect since they need higher clock speeds to compensate and thus require more power.
Your issue most likely is data network and/or apps misbehaving.
Please install BetterBatteryStats (free APK here in XDA) and show it's output after such a 4-5hour cycle.
Did you by any chance disable Fast Dormancy or have you checked if your provider supports it?
Click to expand...
Click to collapse
No, Fast dormancy is enabled. I'm not yet all to used to the S III, but from my knowledge of my old Nexus, I'd say it's an app, like you also said. But I close my apps, I'll post a better stat, tommorrow. Then hopefully we'll get some results. If not better, I'll go completely stock, just with root...
No, Fast dormancy is enabled.
Click to expand...
Click to collapse
Does the RRC statemachine actually go to IDLE and remain there for several seconds without going to active again? (Well except if there is data traffic)
Or does it regularly go back to an active state (e.g. every 5 seconds)
I'll go completely stock, just with root...
Click to expand...
Click to collapse
Which ROM are you on?
CM9 (and afaik all other AOSP/AOKP-based ROM's) has a huge battery drain and other network-related issues (such as powering down the modem every other time)
Samsung-based ROM's should be fine
d4fseeker said:
Does the RRC statemachine actually go to IDLE and remain there for several seconds without going to active again? (Well except if there is data traffic)
Or does it regularly go back to an active state (e.g. every 5 seconds)
Which ROM are you on?
CM9 (and afaik all other AOSP/AOKP-based ROM's) has a huge battery drain and other network-related issues (such as powering down the modem every other time)
Samsung-based ROM's should be fine
Click to expand...
Click to collapse
What huge battery drain are you talking about? I get awesome battery life on CM9.
Sent from my GT-I9300 using Tapatalk 2
joshnichols189 said:
What huge battery drain are you talking about? I get awesome battery life on CM9.
Sent from my GT-I9300 using Tapatalk 2
Click to expand...
Click to collapse
Obviously battery life depends on the user and apps running, just cause it works for you doesn't mean it will for someone else.
theking_13 said:
Obviously battery life depends on the user and apps running, just cause it works for you doesn't mean it will for someone else.
Click to expand...
Click to collapse
You are pathetic. If you bothered to read, the post I quoted implied it was a widespread issue.
Sent from my GT-I9300 using Tapatalk 2
almost all apps can handle single core operation @ 1.4 ghz, so disabling cores will save you some battery. afaik you need a supporting kernel to achieve this. Im using siyah along with extweaks app, there you can select the number cores to use.
Is this what you're looking for? http://tinyurl.com/77fudrr

tegra D00 and ICS Roms

I have tried various ics roms. But seems everyone with tegra d00 cant seem to get it going. So decided to start a thread for if someone figures out how to get d00 going with any ics rom. The screen tear and cant turn screen off and get it to come back seems to be the problem i get with all the different ics roms. So from what i read its kernel issue. so any d00 fixes or tweaks please post in here.
I have the same and there is no solution for that until a proper kernel is written/ported.
Sent from my MB860 using xda premium
I have two Atrix with same tegrapart and almost same serial number (was bought and delivered together, from same shop). One of them works with the ics rom, other don't (have the screen lock corruption bug).
i have d00 with no screen tear, main problem was battery ...
i have D00 also...
no problems to get the ROMs work...
now using AtrICS v2...
except of fast battery drain, no probs so far...
same here AT&T version with d00 and no problems apart from fast drain and heating
So the real problem is not the tegrapart type? What is it then???
I can not use any of ICS roms due to screen tearing and black screen issues.
Sent from my MB860 using xda premium
dedebekri said:
So the real problem is not the tegrapart type? What is it then???
I can not use any of ICS roms due to screen tearing and black screen issues.
Sent from my MB860 using xda premium
Click to expand...
Click to collapse
Mine is a d00 with same problems. I gave up using leak based ROMs for now.
I'm using Th3Bill's ParanoidAndroid latest build and that is an awesome ROM. No fingerprint, no Chrome and no VPN, but the rest works pretty well and, using the Tablet UI all the time (with 160 DPI) I have a good lapdock experience also.
[URL ="http://www.updatemymoto.com/"]
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[/URL]
---------- Post added at 05:23 PM ---------- Previous post was at 05:15 PM ----------
epinter said:
I have two Atrix with same tegrapart and almost same serial number (was bought and delivered together, from same shop). One of them works with the ics rom, other don't (have the screen lock corruption bug).
Click to expand...
Click to collapse
Epinter, do you have any clues about the real reason of those problems?
[URL ="http://www.updatemymoto.com/"]
[/URL]
I have the d00 tegrapart. I've tried both AtrICS 1.0 and v2.0. Functionally everything worked great except for the short battery life and excessive heat but it had continuous reboots. The reboots would get progressively more frequest with time to where after about three days it would start rebooting about every five minutes with it just laying on my desk without me even touching it.
Lately I've been going back and forth between 2.3.6 stock and CSROM...patiently waiting for a stable build.
I don't know if anyone else has had this exact experience but I've been able to run several of the roms based on the ICS leak and as long as my atrix is plugged into my computer via usb, the roms seem to be fairly stable. Within 5 to 10 seconds after I've unplugged it, it reboots and continuously bootloops. The weird thing is that even when it's plugged into a stand alone charger it bootloops, it has to be a computer for it to be stable at all.
I have d00 and I am currently using ICS MROM. It works great so far. Battery is not draining that much.
epinter said:
I have two Atrix with same tegrapart and almost same serial number (was bought and delivered together, from same shop). One of them works with the ics rom, other don't (have the screen lock corruption bug).
Click to expand...
Click to collapse
hmm so maybe tegra part has nothing to do with it working or not. is there any other # or even clockwork version we can compare from working/nonworking d00 user?

[Q] "Shell" app eating my battery

Hey all,
My battery life has gone to sh*t in the last couple days, and I have noticed in my battery usage settings that the top contributor to its demise is always "Shell" (screenshot below).
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Here are my specs:
----------------------------
Samsung Galaxy S4 AT&T
Cyanogenmod 10.2 (09/22/2013 nightly)
Rooted
Sometimes when I reboot, "Shell" does not appear for a while, but I have not been able to pinpoint what triggers it to start. I tried wiping and reinstalling CM, but it still shows up. The battery drain is so bad, in fact, that unless I use the original wall charger that came with the phone, the battery life still decreases while charging.
I am posting this in general Android questions because I literally have no idea what is causing it. It could be a CM bug, it could be an app I installed that's doing something malicious (Lookout doesn't think so, however), or it could be something else I haven't thought of. I just wanted to see if anyone else has experienced this on any version of Android and get some help debugging. Even if you have ideas for how I can pinpoint the app/service that is causing this, I would really appreciate it.
Thanks!
aptbosox said:
Hey all,
My battery life has gone to sh*t in the last couple days, and I have noticed in my battery usage settings that the top contributor to its demise is always "Shell" (screenshot below).
Click to expand...
Click to collapse
I am experiencing the same trouble with my LG Nexus 4 with CM 10.2 nightly.
Edit: Actually it was the case with 20131001, but it seems Ok with 20131007.
Orome70 said:
I am experiencing the same trouble with my LG Nexus 4 with CM 10.2 nightly.
Edit: Actually it was the case with 20131001, but it seems Ok with 20131007.
Click to expand...
Click to collapse
Yea pretty sure it was a CM bug. I reverted to stable 10.1.3 and haven't seen the issue since. I guess that's what I have to expect for living on the bleeding edge I haven't seen anything about it in the changelogs, but if you say it's fixed, maybe I'll try the latest nightly.
aptbosox said:
Yea pretty sure it was a CM bug. I reverted to stable 10.1.3 and haven't seen the issue since.
Click to expand...
Click to collapse
I have a stock Nexus 4 ROM (rooted, but still stock), and I'm seeing 76% in "Shell" today as well, so it's presumably not related to CM.
Stock Nexus 5 and I had 55% drain over 5 hours today... What in the world is causing this? Never had this problem before.
1 day old stock nexus 5 and I'm having this issue...
Here's my post from another thread with screenshots:
http://forum.xda-developers.com/showpost.php?p=47257309&postcount=413
Anybody have a solution to this yet?
EboMike said:
I have a stock Nexus 4 ROM (rooted, but still stock), and I'm seeing 76% in "Shell" today as well, so it's presumably not related to CM.
Click to expand...
Click to collapse
What version of Android are you on? 4.3? 4.4?
aptbosox said:
What version of Android are you on? 4.3? 4.4?
Click to expand...
Click to collapse
There is no official 4.4 for the Nexus 4 yet. I'm on 4.3, JWR66Y.

KitKat wakelocks issue

Hi guys!
I usually use a 4.3 rom because of this issue but every now and then I feel like flashing a 4.4 rom just to see if it it would go away.
So on every 4.4 rom i used i got crazy 3g related wakelocks. Is anybody experiencing a similar problem? Here is a photo of BBS:
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Thanks to it I've got ****ty battery life (14h tops). I have also tried disabling fast dormancy with this i9300 market app, but it didn't seem to help.
Is there anything I can do?
1. How old your battery is?
2. How much battery life you used to get on 4.3 with similar usage?
3. Which kk ROM you have tried?
4. What was the SOT when you took this screenshot?
1. I guess it's maybe 1,5 years old. I don't expect miracles, but battery time now is patethic.
2. I could reach like two times more, 25h from 100% to 0% with 2h SOT.
3. CM11, SlimKat, and now I am using PAC.
4. I don't remember exactly, but 1,5h tops
Hmm.. looking at your information i can pinpoint it to the 3g wakelock only.
I am finding this on github-
svnet-dormancy / multipdp
Author(s): sven, credits to Entropy512 @xda-dev
Ranking: n/a
Speaking Name: svnet-dormancy / multipdp (those are synonyms, depending on android version)
Rationale: svnet-dormancy is a kernel wakelock related to cell data transfers - Fast dormancy or not, you get a 6 second wakelock any time the radio transfers data
Know actions: Change the duration of the wakelock (use at your own risk). Reduce the wakelock by reducing the amount / number of data traffic requests
Known conditions of occurence:
Caused by data traffic
I am unaware of a solution for this. Maybe someone else will be able to throw more light on this. hang in there.
I'm having exactly the same problem as you, those 3 wakelocks(multipdp, secril_fd and l2_hsic) are killing me. I tried to change ROMs, kernels, radios, but couldn't get rid of them.I've done a lot of research, but didn't come up with the solution for this. I even tried with neatrom, jb version, which is closest to stock, and I have those wakelocks there too.
Any luck?
Hi sheo,
Did you found the root of this problem?
I have the same situation, all kitkat roms I've tried so far (including CM, OMNI, SlimKat and lots which I don't remember anymore) have this wakelock problem.
Some users at the better battery status have tried to help me, but all they suggest is to turn my smartphone in a dumbphone by disabling/uninstalling everything that makes sense to have in a smartphone!
So, (sarcasm=ON) without removing, facebook, google play services, google plus, disconnecting from wifi, going to 2G and dimming my display darker than a black hole, (sarcasm=OFF) were you able to use KitKat on your I9100?
Thank you! :fingers-crossed:
sheo said:
1. I guess it's maybe 1,5 years old. I don't expect miracles, but battery time now is patethic.
2. I could reach like two times more, 25h from 100% to 0% with 2h SOT.
3. CM11, SlimKat, and now I am using PAC.
4. I don't remember exactly, but 1,5h tops
Click to expand...
Click to collapse
hugobitola said:
Hi sheo,
Did you found the root of this problem?
I have the same situation, all kitkat roms I've tried so far (including CM, OMNI, SlimKat and lots which I don't remember anymore) have this wakelock problem.
Some users at the better battery status have tried to help me, but all they suggest is to turn my smartphone in a dumbphone by disabling/uninstalling everything that makes sense to have in a smartphone!
So, (sarcasm=ON) without removing, facebook, google play services, google plus, disconnecting from wifi, going to 2G and dimming my display darker than a black hole, (sarcasm=OFF) were you able to use KitKat on your I9100?
Thank you! :fingers-crossed:
Click to expand...
Click to collapse
Unfortunately, no. I have changed my phone since then, and the problem lasted until the end.
You'll have to learn to live with it.
I did.
Not an option...
Nightshadow931 said:
You'll have to learn to live with it.
I did.
Click to expand...
Click to collapse
Not an option... It stays hot all the time and can't live without a charger for more than 8 hours even without use...
I just switched back to stock rom from my carrier (Brazil Vivo), as there is no wakelock but it is killing me with slowdowns, glitches, bugs... And that sense of using a 2011 (amazing) phone!
I'm just preparing to install SlimSaber Reborn and came to this threat to check for some hope.
See ya!

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