[q] s4 battery. - AT&T Samsung Galaxy S 4 Q&A, Help & Troubleshootin

Hey guys okay, so i think i have learned something about our s4 that you guys might not know. can someone confirm? Okay i have tried multiple roms like slimbean and slimkat and cyanogenmod and a bunch of other GE roms and this is what i realized. I was for sure getting better battery life on my stock rom by FAR i was getting atleast 3 hours of screen on time on the stock rom but all the GE roms i get around 2 hours AND THATS A HUGE DIFFERENCE. I really honestly love GE roms they are personally a lot nicer looking and i would like to keep it but the battery life sucks so i dont know if anyone else is experiencing this but if you guys are let me know so im not alone. Maybe its my battery who knows but the phone is only a few months old 2-3 i believe so idk if my battery is disintegrated. My current battery is 12hrs 14min, that sounds impressive right? No the screen on time is 1hr and 50mins and i have 20% left thats more than i usually get its usually dead by now and this is cynagenmod btw the stable version.

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Is it just me?

So is it just me or have you guys noticed significantly lower battery life ever since froyo came out a couple months back. I mean it's not terrible, but it's not nearly as good as pre-froyo.
I've tried numerous roms and kernels, did all the bullsht with my battery and what not, and although the results vary and some rom/kernel variations are better than others (The battery calibration never worked for me, i tried both versions and I am fully convinced that it was just used by HTC to get all the complainers off there back. People have supposedly had results from calibrating there batteries but according to the facts of how batteries work, there really isn't a need to calibrate...but thats beside my point lol, just a little rant.)
ANYWAYS, back to what I was saying... I remember when I was on DamageControls 2.1 roms and how freaking awesome my battery life and performance was, but the moment I upgraded to froyo it's just never been the same again....
Am I the only one experiencing this? It could very well be my mind playing tricks on me, but I highly doubt that...
I'm currently on Myns newest rom and I went a day with the stock HTC kernel, but that was pretty bad so I just now flashed Zyg's kernel...
What rom/kernel variations are working the best for you guys. And before you go on giving me sht about "our phones are different so one rom may be better on mine than yours." or whatever, I really don't care.
Just let me know what's been working best for you.
Have you tried SBC kernels?
Sent from my PC36100 using XDA App
Nooo way man, my battery life pretty much doubled since froyo came out. I'm running MIUI and I can seriously go almost 2 days without charging my phone with a stock battery. Even when I was running Fresh I was getting awesome battery life.
I've tried one SBC kernel a couple weeks ago when i was using Calks rom and I didn't see too great of battery life on that either...
There's probably something that i'm missing, because I have heard of people getting really good battery life. I haven't really messed around with my EVO in a while... I'll try tweaking some things and see how that goes...

Batter life pre and post root/Midnight ROM 4.2

The Short Version:
Stock froyo downloaded from Samsung's website- My battery would die at work at around 1600, after being unplugged at 0600. We will say it lasted about 10 hours. With minimal usage, with looking at my battery reports my screen was used for maybe 15-20min.
Post root/Midnight ROM 4.2- it is now about 1600 and I have about 90% battery life left with 22min of screen time being used with obviously minimal usage after 10 hours.
Long version:
I was getting fed up with my battery life on my beloved epic and not being able to use it at all. So I decided to do some research and figure out this rooting and ROM flashing business. I KNEW it was not because of the apps and such that sprint blames the poor battery life on because I would monitor that and not use any at all while at work just to see and prove them wrong. I have the same apps installed post root as I did pre root with the same sync settings.
So in other words it is highly depressing that they put so much crap on this phone stock to kill the battery life with not even being used.
I am so happy now, I can actually use my phone without having to worry about being dead in 2 hours.
Thanks for everyone’s help with my flashing question and thanks for this great website as a resource.
Time to try out some different ROMs!
Sounds to be like your phone might of been fighting for a signal or something, maybe a PRL update would of fixed it... I was getting well over a day with the sprint rom.. and now with ACS Rom I get a little better.. but not much..
anyways.. congrats

CM based roms have better battery life than Vanilla CM

Hey guys, i have made an observation recently.
i have been using CM nightlies for about a month or two now, and i have noticed the battery to be quite, meh
standby times are pretty terrible tbh.
so i tried carbon rom and noticed the standby times were much better along with the screen time.
with cm nightlies, i have used several battery monitoring apps and i have come to the conclusion that the phone isnt sleeping properly,
or some sort of app is waking the phone a lot, these being system apps.
can anyone confirm this? thanks
I can confirm.
But I can also confirm that no CM based comes even close to stock based roms when it comes to battery life
Same settings being used I get 5.5~6h of screen time on a stock based vs 3.5-4.25h I get on a CM. And idle times are pretty much awful on CM. Every update theres always something new draining the battery.

How is the rom?

Hey all. I am thinking about getting the note 3.I have always rooted/run custom roms. How is the stock rom on this? Battery life good and everything?
Stock is good. Battery life is about 5-6 hours of screen time with normal use for me, 20 hours in total time on battery. Runs smooth.
thegameksk said:
Hey all. I am thinking about getting the note 3.I have always rooted/run custom roms. How is the stock rom on this? Battery life good and everything?
Click to expand...
Click to collapse
I like the touchwiz ROM myself, but that's definately a preference. I get about a day and half of battery.
This is the kind of information that is and could be asked and found here http://forum.xda-developers.com/showthread.php?t=2466099.

CM 12.1 battery drain problem

Somedays ago, i use CM12.1 10xx build and experience a battery problem, i though it was only me who had this problem.
But guess what, it's actaully from CM build problem.
And after the days, people says that they fix it which having a 6 hours of SOT and AMAZING things.
ANd right now i am suing 10192015 build which still suffering Battery Drain.
I mean, 44% for 1h and 15min.
I was like WTF?
So, guys, please, help me out, gimme ur review on CM12.1 that have the most stabil battery life.
Otherwise, i should go back to Cloudy ROM again which giving me 5h of SOT. :/
I use this phone for works, so of course battery life is damn important for me. :silly:
The only reason that i switch from Cloudy to CM is rotation got some bug. But that's another story.
anyway, dont forget to answer my question.
A clean flash of cm12.1 may resolve the battery issue.
I'm using Inazuma 2.8c and the battery life seems to be quite good, although I am not a heavy user.
A clean flash does not solve anything because i already did.
Anyway, i appreciate ur reply.
i have the same problem on note 4 with zero lemon10,000 battery. Let me know if you find a answer
Try going into privacy guard and setting location to ignored or always off (I did this to the built in apps as well).
Where is privacy guard?

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