Database Info

Battery Optimization

So, with all this talk of over clocked/undervolt kernals, smartass gov, setcpu, and juicedefender, I was wondering what the definitive way to optimize battery is (without doing a bump charge).
I dont need any crazy quadrant scores or anything. I just need a phone that can play the occasional game here and there, surf the web, and text message; all while being lag free.
I have done all the "normal" battery savings like turning off 4g (live in 3g only area anyways), backlight lowered, no live wallpaper, ect. My question is what is the "best" method for squeezing out the most juice?
I know there are MANY opinions as to what the best is, but I thought I would poll the masses here and get their 2 cents on the subject.

Well, I pay attention to my current widget. There's certain areas where battery drain is a problem with mobile data turned on. I turn off mobile data when I'm in those areas. Being mindful of that has been the #1 battery saver for me. In fact, I even run with automatic brightness instead of a very low brightness setting and I get better battery life now than before.

I seem to get better battery on lower, mainly because when I do auto, it goes full blast most of the time, and likes to switch about 20 times from high to low while im texting.
My main question here is out of the more detailed methods (new kernal, setcpu, ect.) works best. I know kernals seem to give better performance and battery to some, but I read some of the kernal builds have some hiccups still.
Just wondering what you guys have found is best and most stable of the "detailed" methods.

footballer62 said:
I seem to get better battery on lower
Click to expand...
Click to collapse
Of course, I do as well. I was just saying that turning off mobile data in the areas that tend to cause my phone to draw 700+mA saves a significant more amount of power than turning the screen to low.
I'm currently planning to try out setting Tasker to automatically turn off mobile data when connected to problematic towers.
My main question here is out of the more detailed methods (new kernal, setcpu, ect.)
Click to expand...
Click to collapse
Well, I'm running BAMF 1.3 with the smartass governor. It saves quite a bit of power and has very little setup (you don't have to set up profiles with setcpu).
The newest Tasker adds CPU frequency control support... it doesn't currently work on the ROM I'm running ... but I'd imagine when we get CM7, it'll work. Presumably you could use that to always scale down the CPU until you open up specific apps that benefit from additional clockspeed. It could save a bit of power.

NEW APP in the market - LTE OnOff - switches phone from 4G to 3G to save batt.

Zshazz said:
I'm currently planning to try out setting Tasker to automatically turn off mobile data when connected to problematic towers.
Click to expand...
Click to collapse
I purchased Tasker a while back just because it sounds cool, but I've never really found useful tasks to run with it for how I use my device; still looking though!
Yours sounds ideal for some areas I go to. Please remember to share the Tasker profile you come up with for that functionality.
Thanks!

Zshazz said:
Well, I'm running BAMF 1.3 with the smartass governor. It saves quite a bit of power and has very little setup (you don't have to set up profiles with setcpu).
The newest Tasker adds CPU frequency control support... it doesn't currently work on the ROM I'm running ... but I'd imagine when we get CM7, it'll work. Presumably you could use that to always scale down the CPU until you open up specific apps that benefit from additional clockspeed. It could save a bit of power.
Click to expand...
Click to collapse
Hello guys, Im coming over from the eris/custom rom to TB this past week. I was wondering what kind of life you are experiencing with the custom roms here like BAMF. I haven't rooted it yet but am planning to since the current battery life is not acceptable in my daily life. I love the phone but need to figure out if I can keep it or not by helping my battery life. I have 4g disabled since it is not even avail in my area yet but still only getting 6-7 hrs. Thanks for any help, opinions, or redirects.

hehe...
This is great. Reminds me of hypermiling with my car/hybrid to get the most gas out of it. Well...it's about that time again with fuel costs going up.
So what is the equivalent term of hypermiling for handhelds/phones? Hyper-???

squeeze said:
So what is the equivalent term of hypermiling for handhelds/phones? Hyper-???
Click to expand...
Click to collapse
Never mind. I guess the thread title was fine "battery optimization". But those gas/hybrid nerds (like me) love using the term hypermiling.

I like using setcpu profiles or custom kernels
Sent from my ADR6400L using XDA Premium App

n2imagination said:
Hello guys, Im coming over from the eris/custom rom to TB this past week. I was wondering what kind of life you are experiencing with the custom roms here like BAMF. I haven't rooted it yet but am planning to since the current battery life is not acceptable in my daily life. I love the phone but need to figure out if I can keep it or not by helping my battery life. I have 4g disabled since it is not even avail in my area yet but still only getting 6-7 hrs. Thanks for any help, opinions, or redirects.
Click to expand...
Click to collapse
6-7 hours? Jeez. I have a fairly stock rom (perfect storm, which is more or less just bloat free) with 4G off, backlight to around 35%, only one gps running - the google one for the HTC weather, I use wifi when at home, I have nothing that pushes except my main gmail and the htc weather, do texting all day, and about an hour of internet a day. With this setup after 16 hours I have always had over 50% battery.
How many things do you have pushing data? Facebook or twitter? And if so what is the interval? Also, how much on the net are you, and how often do you game?
squeeze said:
This is great. Reminds me of hypermiling with my car/hybrid to get the most gas out of it. Well...it's about that time again with fuel costs going up.
So what is the equivalent term of hypermiling for handhelds/phones? Hyper-???
Click to expand...
Click to collapse
Battery optimization is just a term I figured work, but hypermiling sounds pretty sexy Increases your battery mileage of course!

I'm using Superpower to disable data connection when the screen off. Seems to be working well.

footballer62 said:
6-7 hours? Jeez. I have a fairly stock rom (perfect storm, which is more or less just bloat free) with 4G off, backlight to around 35%, only one gps running - the google one for the HTC weather, I use wifi when at home, I have nothing that pushes except my main gmail and the htc weather, do texting all day, and about an hour of internet a day. With this setup after 16 hours I have always had over 50% battery.
How many things do you have pushing data? Facebook or twitter? And if so what is the interval? Also, how much on the net are you, and how often do you game?
Click to expand...
Click to collapse
Never game, 2 gmail accounts, fb few times a day, no twitter, net 2-3 times a day. This is stock sense on the phone though. Thats why I was looking into the dif roms to see what battery life was like with dif kernel on it. I will prob root and toss a rom on there to see if it gets me better life (which im sure it will), but considering waiting until the 16th (rumor out that fairly big update coming and want to see if that may help at all).

distortedloop said:
I purchased Tasker a while back just because it sounds cool, but I've never really found useful tasks to run with it for how I use my device; still looking though!
Yours sounds ideal for some areas I go to. Please remember to share the Tasker profile you come up with for that functionality.
Thanks!
Click to expand...
Click to collapse
Tutorial on Tasker CPU profiles can be found here

jbh00jh said:
NEW APP in the market - LTE OnOff - switches phone from 4G to 3G to save batt.
Click to expand...
Click to collapse
This really is the best way to save battery at the moment.

I made my battery last the whole day after I installed Automatic Task Killer from the market. It kills selected processes as long as the screen is off. I get home after 9 hours at work and I still have ~40% battery left. Before I installed Automatic Task Killer my TB was dead after 9 hours.
There is so much random bloatware on the TB from vzw that it eats the battery fast. I just need to root I had a Eris on a custom ROM before the TB and I could go 2 days easy without a charge.
This seems to be a fix for the time being. Too bad there is no way for developers to make a one click root like on the Eris. I will have to bite the bullet and do it the old fashioned way.

Can you reference where you heard this "April 16th update" rumor? I'd like to read about this one and see the credibility behind it.
Sent from my ADR6400L using XDA Premium App

chanmannn said:
Can you reference where you heard this "April 16th update" rumor? I'd like to read about this one and see the credibility behind it.
Sent from my ADR6400L using XDA Premium App
Click to expand...
Click to collapse
X2
and what is suppose to happen with this update?

I use an app called System Panel that's got all kinds of nifty information available to the curious.

chanmannn said:
Can you reference where you heard this "April 16th update" rumor? I'd like to read about this one and see the credibility behind it.
Sent from my ADR6400L using XDA Premium App
Click to expand...
Click to collapse
They are all just rumors (like any other update/upgrade "news") but...
http://htcsource.com/2011/03/rumour-htc-thunderbolt-to-get-gingerbread-update-in-q2-2011/
http://technology.gather.com/viewArticle.action?articleId=281474979166628
http://www.wirelessgoodness.com/2011/03/27/htc-thunderbolt-getting-android-2-3-gingerbread-update-in-q2/
http://androidcommunity.com/htc-thunderbolt-getting-gingerbread-by-summer-20110326/

Which current ROM / Kernel combo gives you the MOST battery life?

If you're going to include statistics, PLEASE also try to include your SCREEN ON TIME, BRIGHTNESS, general use, wifi and lte would be good too.
I'm currently on CleanROM 3.0 and love it but thinking of switching to Lite version. worth it for battery savings? halp?

"BEST OF" Threads are not allowed on XDA. It sucks, I know. Because it'd be nice if there could be a place for some discussion... a "this rom is nice but that rom has better battery life" kind of thing
CleanROM is a good ROM, and Scott is an active developer here in the forums. Not sure how much better battery life you'll get from the lite version. I would imagine it'd be a lot because bloatware never helps battery life.

shgadwa said:
"BEST OF" Threads are not allowed on XDA. It sucks, I know. Because it'd be nice if there could be a place for some discussion... a "this rom is nice but that rom has better battery life" kind of thing
CleanROM is a good ROM, and Scott is an active developer here in the forums. Not sure how much better battery life you'll get from the lite version. I would imagine it'd be a lot because bloatware never helps battery life.
Click to expand...
Click to collapse
i'm confused, i'm not allowed to ask people for recommendations on what ROM has given them these supposed 5-hours screen-on times? I get 2-3 hours and my brightness is at 20% with wifi on on cleanrom 3.0 and im worried I have a defective battery. what's wrong with this question?

Unfortunately XDA Rules don't allow us to say what is the "best" in a specific area. You can ask for what ROM people are running and what screen on time they are getting so that you can determine it yourself.

Even though I'm all for following the rules I'm kinda confused why this rule was ever passed. In the real world there are always "best" of things. It seems this is just an ego protecting type of rule. However it would cause people to fight and say "No I have the best" and etc. People can't handle freedom!

theartialmartist said:
If you're going to include statistics, PLEASE also try to include your SCREEN ON TIME, BRIGHTNESS, general use, wifi and lte would be good too.
I'm currently on CleanROM 3.0 and love it but thinking of switching to Lite version. worth it for battery savings? halp?
Click to expand...
Click to collapse
Here's a slight preview of what is to come on the lite version
Sent from my HTC One X using Tapatalk 2

godfirst said:
Here's a slight preview of what is to come on the lite version
Sent from my HTC One X using Tapatalk 2
Click to expand...
Click to collapse
I slightly want to kill you, mostly out of jealousy but also for not mentioning your brightness level, LTE on/unavailable, SYNC on/off, usage etc.
But this is enough to make me flash lite tonight after a total discharge. i'm at 44% with 1 hour 30 minutes screen on time. 10 hours 30 mins normal time at 2/10 brightness. (one notch above lowest setting)
is it possible i have a defective battery? or is Lite really that much different?
What's the procedure for switching from Standard to Lite? Backup all apps with titanium, flash dalvik and data cache, install via clockworkmod, then perform a battery calibration?

godfirst said:
Here's a slight preview of what is to come on the lite version
Sent from my HTC One X using Tapatalk 2
Click to expand...
Click to collapse
http://youtu.be/hbOjS0Ah7_o

godfirst said:
Here's a slight preview of what is to come on the lite version
Sent from my HTC One X using Tapatalk 2
Click to expand...
Click to collapse
I'm kind of curious about the extra stuff too with that. Sync, wifi, etc.

godfirst said:
Here's a slight preview of what is to come on the lite version
Sent from my HTC One X using Tapatalk 2
Click to expand...
Click to collapse
It is possible on CleanRom, I have so many other apps running at the moment that I get no where near that anymore. When you look at what he is running in his screenshots besides the screen he hasnt used much else (3% talk time for example). Now I switched between all three of the cleanRoms through the earlier development and did not notice a huge drop from DE to Lite. I went back to DE because I like it stripped of sense and their is still the debloating. I use FB and twitter so I wasnt going to stay on Lite for long.
I get roughly 8-9 hours a day on 25% brightness 3hrs of screentime but as I said I generally have a lot of other apps running that drain my battery that you may not run. (WiFi on most of the time and in an LTE area). My main drain comes from commuting to work in NYC when the service keeps dropping, which i read drains your battery quicker and it def appears this way. pansi (text messaging app) tends to use a fair amount of cpu power which helps drain my battery as does Defender II (a game).
Personally unless you are going to flash the lite version it wont make that big of a difference, it will depend more on what apps/screen brightness you are going to use.

Hadcook said:
It is possible on CleanRom, I have so many other apps running at the moment that I get no where near that anymore. When you look at what he is running in his screenshots besides the screen he hasnt used much else (3% talk time for example). Now I switched between all three of the cleanRoms through the earlier development and did not notice a huge drop from DE to Lite. I went back to DE because I like it stripped of sense and their is still the debloating. I use FB and twitter so I wasnt going to stay on Lite for long.
I get roughly 8-9 hours a day on 25% brightness 3hrs of screentime but as I said I generally have a lot of other apps running that drain my battery that you may not run. (WiFi on most of the time and in an LTE area). My main drain comes from commuting to work in NYC when the service keeps dropping, which i read drains your battery quicker and it def appears this way. pansi (text messaging app) tends to use a fair amount of cpu power which helps drain my battery as does Defender II (a game).
Personally unless you are going to flash the lite version it wont make that big of a difference, it will depend more on what apps/screen brightness you are going to use.
Click to expand...
Click to collapse
Your correct,I don't set my screen brightness it's auto,I also don't use social apps like Facebook, etc. I do quite a bit of browsing and flashing. I've made some backups and flashed some mods and some of the apps I use don't even show up, why they don't I have no clue. I don't play mobile games though, which probably take up a lot of usage. I've had so many phones and roms over the years tell a lite ROM fits my agenda. It's still to each own. Just know I'm not just sitting and looking at my screen for over 5 hour of use lol. I'm also in and have LTE which shows in screenshots.
Sent from my HTC One X using Tapatalk 2

soapbubble said:
I'm kind of curious about the extra stuff too with that. Sync, wifi, etc.
Click to expand...
Click to collapse
Here you go
Sent from my HTC One X using Tapatalk 2

How is this?
I am running sick-sense ROM while using the performance battery profile on cpu editor. I have LTE, and auto sync on the whole time while doing some browsing, a couple of hours of tune in radio, 8 mins of calls, some txts via google voice, and a bit of music.

I'm back with more lol My settings are still the same from previous post.
Sent from my HTC One X using Tapatalk 2

godfirst said:
I'm back with more lol My settings are still the same from previous post.
Sent from my HTC One X using Tapatalk 2
Click to expand...
Click to collapse
any web browsing... it doesnt really show any usage, aside the screen has been on?

Yes,I just flashed the new 2.0 radio as well. I've even listen to some music. It seems that if the app hasn't used a lot of cpu power then it doesn't show up.I
Sent from my HTC One X using Tapatalk 2

I found the cleanroms have really great battery life. I gave up Samsung skyrocket because of the poor battery life but with this phone and with that rom in particular I was very impressed. With a full charge I can last all day with a good amount of use (phone calls, texts, auto syncing, and email) and still have 40% or so at days end.
Sent from my HTC One X using xda premium

JCon0320 said:
I am running sick-sense ROM while using the performance battery profile on cpu editor. I have LTE, and auto sync on the whole time while doing some browsing, a couple of hours of tune in radio, 8 mins of calls, some txts via google voice, and a bit of music.
Click to expand...
Click to collapse
Have you tried any of the other settings (performance/battery, batterysaver)? I'm currently using cleanrom DE, but I'm a little underwhelmed by the battery life. It could be that I wiped everything and spotify/chrome/redditnews is downloading everything fresh (they have been using quite a bit of data). I guess my usage these past two days have been a little out of the ordinary.
I'm very interested with sick sense though. The battery carrot is very enticing. I'm a bit worried about the journaling though. Will it make it difficult if I want to switch back to another rom?

thechilipepper said:
Have you tried any of the other settings (performance/battery, batterysaver)? I'm currently using cleanrom DE, but I'm a little underwhelmed by the battery life. It could be that I wiped everything and spotify/chrome/redditnews is downloading everything fresh (they have been using quite a bit of data). I guess my usage these past two days have been a little out of the ordinary.
I'm very interested with sick sense though. The battery carrot is very enticing. I'm a bit worried about the journaling though. Will it make it difficult if I want to switch back to another rom?
Click to expand...
Click to collapse
I haven't tried the other profiles yet. I wanted to start off with this profile to see what this rom can really offer under the highest settings. Based on what others have said about the other profiles, the battery saver profile is where it's at if you want maximum battery life out of your phone. As far as flashing other roms and journaling, I don't have any experience doing that because this is my first rom. Also, I don't know if the disabled journaling on this rom impacts flashing other roms and am curious to know as well. Anybody knows if the disabled journaling will keep me from switching roms? I am new to this stuff so bear with me here....

JCon0320 said:
I haven't tried the other profiles yet. I wanted to start off with this profile to see what this rom can really offer under the highest settings. Based on what others have said about the other profiles, the battery saver profile is where it's at if you want maximum battery life out of your phone. As far as flashing other roms and journaling, I don't have any experience doing that because this is my first rom. Also, I don't know if the disabled journaling on this rom impacts flashing other roms and am curious to know as well. Anybody knows if the disabled journaling will keep me from switching roms? I am new to this stuff so bear with me here....
Click to expand...
Click to collapse
Well, in lieu of other responses, what have you found with your current settings? Everything about the same? I have mean, thats pretty good for high performance setting and heavy use, yes?

[Q] Higher battery drain with Wifi off?

I've noticed with at least my Infuse that whenever I have my Wifi on I have significantly lower battery drain than when I have it off. I'm currently running Aeon 1.4 with Entropy's kernel but have noticed this with other kernels and ROMs that I've used. Screenshot attached showing that pretty much as soon as the wireless is turned off the battery usage takes a sudden drop and continues until it comes back on. Is there an issue with my phone or are there some settings that I should be aware of and try changing to remedy the issue?
I tried searching around before I made this thread and couldn't find anything that had the same issues I've been having. Any input would be appreciated.

Scrion said:
I've noticed with at least my Infuse that whenever I have my Wifi on I have significantly lower battery drain than when I have it off. I'm currently running Aeon 1.4 with Entropy's kernel but have noticed this with other kernels and ROMs that I've used. Screenshot attached showing that pretty much as soon as the wireless is turned off the battery usage takes a sudden drop and continues until it comes back on. Is there an issue with my phone or are there some settings that I should be aware of and try changing to remedy the issue?
I tried searching around before I made this thread and couldn't find anything that had the same issues I've been having. Any input would be appreciated.
Click to expand...
Click to collapse
I see what you are talking about, however I think the issue is less with your wifi being off as it is with your cell signal being low. Looking at the cap you provided I can see where in the second wifi off period you could think that the wifi was your problem, but look at the first. you have the same drain with the wifi off as you do with it turned on (practically). Change the modem. Find one that works great in your area, because with the modems for the infuse newer is not always better. Also you can try one of those little RF booster things that go on your phone behind the battery to boost signal. I know they seem like a scam, but they do sometimes give just enough boost to keep a phone from searching for signal when it should have great signal. But try flashing a new modem first.

kirbee213 said:
I see what you are talking about, however I think the issue is less with your wifi being off as it is with your cell signal being low. Looking at the cap you provided I can see where in the second wifi off period you could think that the wifi was your problem, but look at the first. you have the same drain with the wifi off as you do with it turned on (practically). Change the modem. Find one that works great in your area, because with the modems for the infuse newer is not always better. Also you can try one of those little RF booster things that go on your phone behind the battery to boost signal. I know they seem like a scam, but they do sometimes give just enough boost to keep a phone from searching for signal when it should have great signal. But try flashing a new modem first.
Click to expand...
Click to collapse
I'll have to start looking around for a new modem, currently I'm on UCLB3; my only concern is this is the only modem to provide me with a quick GPS lock and I don't want to lose that ability. Thanks for the suggestion

Check the modem thread. I had some great luck with an older one (k1 I think it was). I have since passed on my infuse to my son, and I can ping his location within 15 yards in under 2 minutes. I have a post over there where I got 5 days of battery life and it should tell you the modem I was using as well as rom and other info about the setup I had.
Sent from my SAMSUNG-SGH-I727 (Skyrocket) using xda premium
---------- Post added at 09:43 AM ---------- Previous post was at 09:25 AM ----------
I found it for you, it was in the battery tips and tricks thread, buried away.
http://forum.xda-developers.com/showpost.php?p=23402471&postcount=32
I also added a picture of your screenshot to my original post here so you can see where the wifi and the signal are at more accurately on the battery meter.

Thanks for the link, I'm actually using ADW Launcher Ex right now and by the looks of it I shouldn't. Though I don't think I'm ready to spend the money on esf shell; are there any other recommendations for launchers that aren't as much of battery hogs?
Sent from my SAMSUNG-SGH-I997 using xda app-developers app

If you have an ics based rom apex is nice. Launcher pro plus for gb is good IF you don't use the LPP included widgets.
Sent from my SAMSUNG-SGH-I727 using xda premium

kirbee213 said:
If you have an ics based rom apex is nice. Launcher pro plus for gb is good IF you don't use the LPP included widgets.
Sent from my SAMSUNG-SGH-I727 using xda premium
Click to expand...
Click to collapse
Giving FTL Launcher Lite a shot, if it doesn't work out or if it's not recommended I'll try out Launcher Pro, thanks again!

I tried it for a couple days, was not my cup of tea. But it had outstanding reviews so I gave it a shot. I think I ended up going to LPP or ADW with the infuse.
A few other things to check are: Make sure your phone is not always scanning for wifi networks.
If you are in an area of low cell signal and don't need your phone to call people, flip on airplane mode.
Turn off auto brightness... use the power widget (or the 17 notification toggle tweak) to change your brightness between 10% (low light) 20% (medium light) and full (when in bright daylight conditions).
There is somewhere a tweak to turn off H+ and 3G when not in those service areas, find it, use it. (Google *#*#4636#*#* or is it *#*#3646#*#*... idfk one of those...
Check your sns sync schedule for short times. Set them to a longer interval or off. You should check ALL sync schedules for this, calendar is a major culprit of this, even if you don't have one setup.
Install "badass battery monitor" use it to check wake locks and battery voltage and temp. It has a great "battery sucker" feature that will tell you what is draining your battery.
NEVER USE AUTO APP KILLERS! They do more harm than good. Hold home and open the task manager and kill the apps yourself. It will take 15 seconds and if you do it for 3 days a few times a day, it becomes a habit. Don't be all grrr and do it 60000000 times a day. Just every now and then.
If you have installed a few apps and launchers that didn't work out for you, I would say booting into recovery and clearing the cache or a reset are in order. Uninstalls rarely remove everything they should and leave behind bits of code that will suck your battery like a hidden mosquito you can never swat.
Probably the most helpful tidbit anyone can give you is to not stress over the battery life constantly. You have a wonderful device that you have spent a lot of time customizing to look the way you want it to look. The more you stress over the battery the more you will check it, turning on that big beautiful screen sucking even more life from it. Making user error the major battery sucker in the equation... You wanted that beautiful beast, enjoy it.
Sorry so long, but trying to be thorough and helpful. These are the major tips I used to get 5 days from my phone. But honestly after day 2 or 3 I started really cracking the whip and refused to use my phone for anything other than texting.
Sent from my SAMSUNG-SGH-I727 using xda premium

kirbee213 said:
There is somewhere a tweak to turn off H+ and 3G when not in those service areas, find it, use it. (Google *#*#4636#*#* or is it *#*#3646#*#*... idfk one of those...
Click to expand...
Click to collapse
Looking around I can't seem to find this, does it just disable all data when there's no service? Sounds great if it does.

No it just drops you down to edge.
Sent from my SAMSUNG-SGH-I727 using xda premium

Here ya go...

kirbee213 said:
Here ya go...
Click to expand...
Click to collapse
Fantastic, thanks a lot

So how has your battery been? Updates?
Sent from my SAMSUNG-SGH-I727 using xda premium

kirbee213 said:
So how has your battery been? Updates?
Sent from my SAMSUNG-SGH-I727 using xda premium
Click to expand...
Click to collapse
Its been about the same, possibly a bit better. I've been using the battery app you mentioned to find what's causing the drain and kinda working with it from there. However I was in an area with roaming for a week so I can't give an accurate conclusion.

The BCM4330's standby drain is extremely low. In addition, when active, it requires FAR less energy per byte of data transferred than the cell radio.
OF COURSE background syncs are going to use less power over wifi than over the cell radio.
The whole "turn your wifi off" to save power became invalid over a year ago. (Exception: If the wifi chip misbehaves, such as the infamous BT-AMP bug, but I haven't seen that in many months.)

Here a couple of threads I found regarding this mystery drain.
From the past:
http://forum.xda-developers.com/showthread.php?t=1224052&highlight=battery
Here is the i9000 battery drain issue I was refering to:
http://forum.xda-developers.com/showthread.php?t=1039696
The last few pages hinted that the problem may have been fixed in later gb builds.
Our custom kernels was based of Roger's 2.3.3.
Would the bug be still in it?
Could this be why we (at least me anyway) are still seeing this?

4g/3g problems

OK so I've had this problem with ever ROM except original touchwiz ROMs. My 3g and 4g will random stop working and it reconnects maybe after a reboot or just whenever. This is quit frustrating and in tired of using my internet when something else wants me to.
If you know whats wrong and the solution that would be awesome if you don't. Then please don't respond.

phillytothemax said:
OK so I've had this problem with ever ROM except original touchwiz ROMs. My 3g and 4g will random stop working and it reconnects maybe after a reboot or just whenever. This is quit frustrating and in tired of using my internet when something else wants me to.
If you know whats wrong and the solution that would be awesome if you don't. Then please don't respond.
Click to expand...
Click to collapse
Too general. If you want help you need to be specific. What is your current ROM? What is your baseband version? Saying "every ROM" tells us nothing.

phillytothemax said:
OK so I've had this problem with ever ROM except original touchwiz ROMs. My 3g and 4g will random stop working and it reconnects maybe after a reboot or just whenever. This is quit frustrating and in tired of using my internet when something else wants me to.
If you know whats wrong and the solution that would be awesome if you don't. Then please don't respond.
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How are you installing the roms? Do you wipe properly.? Etc... Need more info
Sent from my SAMSUNG-SGH-I727 using xda premium

Okay so I all the basebands k3 k4 and uxm whatever. I wipe everything.I use cwm. And im telling every rom but the ones thqt are stock. As in miui cm 10 aokp asop pac man everything pretty much. Only oone that works is touch wiz roms. Like embryo

I think i have a similar problem. I was getting all sorts of weird reboots on stock so decided to try CM10 stable. Love everything about it but having issues with the signal. Have tried 4 or 5 different basebands - currently using i727UCLL3. when i have signal its great, but i have spotty reception at work. Once the phone looses the signal, about half the time it doesn't pick a signal back up unless i put it in airplane mode, then usually it refreshes and is ok for a while. however sometimes, even when it looks like i have signal, i have no internet connectivity and have to reboot the phone to get everything working again - this happens every 2-3 days usually on average. I'm in the philly area so based on the name of the original guy posting maybe its a more local issue but who knows. any help appreciated. thanks!

hey my name is philly lol. but i do live in VA so maybe its a region thing idk. still no fix. only thing that works which isnt worth it half the time, is embryo its CONSTANT 4g no problem. but for me that battery life is awfull.

phillytothemax said:
hey my name is philly lol. but i do live in VA so maybe its a region thing idk. still no fix. only thing that works which isnt worth it half the time, is embryo its CONSTANT 4g no problem. but for me that battery life is awfull.
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User error
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how is it user error? i do the same thing on miui as on embryo?? saying that is toooooooooooo general

phillytothemax said:
how is it user error? i do the same thing on miui as on embryo?? saying that is toooooooooooo general
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I think he was referring to the battery life issue. Battery life is extremely subjective and based on each user's habits and settings. Other Embryo users are able to get less "awful" battery life, hence "User error."
No one has the formula for best battery life because everyone's usage varies. There are all sorts of guides, tips and tricks on here to help extend your battery life. Mitigating wakelocks should always be the first place you look to extend your battery.

mrfeuss said:
I think he was referring to the battery life issue. Battery life is extremely subjective and based on each user's habits and settings. Other Embryo users are able to get less "awful" battery life, hence "User error."
No one has the formula for best battery life because everyone's usage varies. There are all sorts of guides, tips and tricks on here to help extend your battery life. Mitigating wakelocks should always be the first place you look to extend your battery.
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True this I can get great battery life on any rom
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[Q] updated kernel to use with Slim ICS ?

I am running [ROM][4.0.4] Slim ICS(T959V)-UNOFFICIAL posted by beastmode, Question is there a more updated kernel I could use with it ?
I am thinking either [KERNEL]Proton Kernel build2[ICS][TFQ] or [Kernel]ICS/CM9 LZ Kernel from Team Fah-Q (Updated 20OCT12)
I am very happy with this ROM and GPS is working great (after a few hacks from other threads) but battery life is the worst !!! I lose 5% when using Waze/GPS plugged into the car charger and about 20% overnight just sitting there, I have tried all sorts of battery apps as well as turning off wifi at night with no luck. So I am thinking that a new kernal would help.
I only use the phone for GPS and Web browsing.
Has anyone used these kernels and with what ROMS ?
Interesting in upgrading not bricking my phone and installing everything from scratch
yes i am a newbie so apologies in advance ! Thanks.

Neither of those kernels (nor, really, anything else) is going to make Waze or any other GPS app stop using as much power as they do. If you wanted to change your scheduler and governor, those might make a difference... but anything with working GPS is a Herring kernels using the same paths to talk to the GPS.

Theraze said:
Neither of those kernels (nor, really, anything else) is going to make Waze or any other GPS app stop using as much power as they do. If you wanted to change your scheduler and governor, those might make a difference... but anything with working GPS is a Herring kernels using the same paths to talk to the GPS.
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Thanks for taking the time to answer. Even if GPS is a battery sucker what can I do about the fact that leaving the phone on takes so much battery ?
Could you suggest other stable kernel/ROMS for the SGH-T959V that support GPS and have decent battery life ? I like the simplicity of ICS and since all I do with this phone is browse the web and use GPS I really don't need any bells and whistles.
Thanks.

The two best ICS at the moment are probably Ultragen 1.01 (be sure NOT to use 1.00) or HebMIUI, which is the only ICS that still gets irregular updates.
The big thing to do with Waze is, if you don't NEED to stare at the screen, turn it off and just listen to the audio directions. Sucks down a LOT less battery that way, though it's still a bit painful.
Regarding general ways of improving battery life... look into Greenify if you haven't yet. Can tell apps to stop running in the background if you don't actually want them to. Just remember NOT to Greenify Waze if you don't want it to shut down with the screen off, or your music app, or anything else you actually want to use while you're not actively looking at it. Oh, and avoid Greenifying your email too. Though it's funny, it's not a good way to find out about new messages.

More options coming soon. Stay tuned...

bhundven said:
More options coming soon. Stay tuned...
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About how soon ?

eramm said:
About how soon ?
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please don't ask for eta's as it is considered being rude. updates will come when they come.
sent from within the white knight

GFX.myst. said:
please don't ask for eta's as it is considered being rude. updates will come when they come.
sent from within the white knight
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Jah, watch for an updated cm9 build. It will take some time.
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