[Q] Which rom has better battery life?

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Hi,

I've met with Galaxy S2 after ICS released so I've never used GB roms. So far I've tried ParanoidDroid, D4ROM, Hydrog3n, Slim Rom, Litening Rom, Turkbey Rom and Resurrection Remix. I've fairly used them all and happy with Hydrog3n atm. My gf also bought S2 and complaining about battery life since I've never tried GB roms and don't have any technical knowladge to compare GB with ICS (I mean voltage and stuff) I ask you gentleman to recommand a rom for me. It doesn't matter if it's stock ICS or stock GB or some custom rom. I just want to get best battery life out of Galaxy S2. Since I think custom roms remove most of the unnecesery apps and stuff from stock's it has to last longer and since ICS is newer and as far as I've read from posts that the voltage values on paper are lower then GB ICS has to last longer than GB but somehow ICS consumes more battery. I just upgraded her phone to ICS stock with Siyah Kernel with battery profile but she is complaining to me that it was better before I'm very confused and couldn't decide on what to do.
Is it better to not root at all or return back to GB ? I just want to maximize the battery life.

Thanks in advance

http://forum.xda-developers.com/show...php?p=25164221

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No rom. Because there are far too many variables which determine battery life to say conclusively "Such and such rom/kernel is teh awesomz battery life man !"

Battery life depends on how you have the phone setup and how you use it. Any tweaks you might have made to kernel settings, and so on. There is no simple path to getting the best battery life possible from your phone, there are no quick fixes. It's a matter of experimenting with your phone setup & trying different roms/kernels until you find one that's good for you.

If that kind of thing doesn't enthuse you, as well as being in the wrong place, you might as well stick to stock tbh.

With all this in mind, IAmFrk was quite right to refer you to the forum policy of not asking for rom/kernel recommendations. There have been hundreds of these threads in the past, you should do a search & see what people recommended in those rather than start another thread.

No no you guys understood my q wrong. I'm asking if GB is better in terms of battery than ICS and not rooting the phone is a better option than rooting or not. I'm not asking any roms or kernels since I don't need any recommendation on that for myself since I've been trying diffrent roms and kernels in that matter. I just want technical information for the stuff as I mentioned above not rom or kernel. The difference between GB and ICS, stock phone and rooted phone. Does rooting a good thing or not ofc I've read tweak battery life related posts before asking mine but couldn't find any info comparing my needs.

And I'm asking this since I upgraded her phone and didn't do anything else she is using the same settings as she did in GB but her battery lasts less. That's why I'm questioning the GB and ICS, with the same settings which one will last longer ?

But it isn't as simple as 'GB is better in terms of battery than ICS'.

Some people on here (who help a lot of people in Q&A and whose opinions I really respect a lot) say GB is better, ICS is buggy & they've had crap battery life from the roms they've tried. For me, I get the best battery life I've ever had with CM9. Why ? Because I've put in the time/effort to tweak my setup to make it that way. My point is if you ask 100 people on XDA that question, you'll get different answers to the question depending on the person.

So far as rooting/not rooting concerned, again, nothing to do with battery life per se. What rooting does is give you control over your phone, and can (it can also enable you to make your battery life/phone performance a whole lot worse) enable you to run kernels (and tweak those kernels), and enable you to set your phone up to possibly give you better battery life .

Given it's your GF's phone & I presume you want it to work well 100% of the time with no glitches (because you'll probably end up playing tech support, which from experience I know is a pain in the arse), leave it on stock.

On the other hand if you like a challenge, I've given you plenty to think about in my two posts. Every bit of info you could possibly need to tweak your phone is on XDA. It's just a matter of searching, reading, learning & then using that info to make a setup that gives you what you want.

Originally Posted by Nebtawi

No no you guys understood my q wrong. I'm asking if GB is better in terms of battery than ICS and not rooting the phone is a better option than rooting or not. I'm not asking any roms or kernels since I don't need any recommendation on that for myself since I've been trying diffrent roms and kernels in that matter. I just want technical information for the stuff as I mentioned above not rom or kernel. The difference between GB and ICS, stock phone and rooted phone. Does rooting a good thing or not ofc I've read tweak battery life related posts before asking mine but couldn't find any info comparing my needs.

Originally Posted by MistahBungle

But it isn't as simple as 'GB is better in terms of battery than ICS'.

Some people on here (who help a lot of people in Q&A and whose opinions I really respect a lot) say GB is better, ICS is buggy & they've had crap battery life from the roms they've tried. For me, I get the best battery life I've ever had with CM9. Why ? Because I've put in the time/effort to tweak my setup to make it that way. My point is if you ask 100 people on XDA that question, you'll get different answers to the question depending on the person.

I totally agree with you I'm very happy with my rom also coz I'm tweaking kernel and also manually disabling stuff by myself but It's not possible for me to do that to my gf coz I'll have to act as tech support and I'm always checking if there is anything on wake while the screen is off and act accordingly to it, I can't do this on her phone.
So as you mentioned I'm not asking this formyself nor asking a rom reccomendetion but as you said I think I'm gonna install stock GB and do the necessary settings for her and leave it.

Thanks for your replies much appreciated.

Thread closed

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Best ROM is the one that works best for you. There are too many variables. Try a few out and make your own decision.