yashsingh1/xdaforums huggingface dataset:
[Galaxy S II Q&A, Help & Troubleshooting] bnbasarir:
Maybe you should change your ROM and give it a try. I'm also basing by reviews to real life usage and factors. I was getting around 10 h max with my original ROM and Kernel. Now with Sensation ROM w/Nimp 2.1.3 Kernel and UV/UC I'm getting well over 24h of battery life from my phone. I'm attaching also pictures so you can see that I'm not bulls''ting you :D

Please note that I'm using my phone when I need it. So this is a "weekend" stat as I don't have too much phone calls and not much internet usage. But anyway I'm pulling with heavy usage around a day with my phone while UC/UV

Although I don't play games I do read and write a lot of e-mails and many phone calls so my screen is using a lot during the week time and still going all day without reaching for my charger.
[Galaxy S II Q&A, Help & Troubleshooting] ithehappy:
I was not talking about Standby time! Its the Display On time what matters. Anyway, I've tested myself and seen the poor result, going back to CF kernel.
[Galaxy S II Q&A, Help & Troubleshooting] bnbasarir:
I got you bro, thats why I put the screenshots and told you that this is a phone usage result. I'm not gaming or watching videos on my phone. I got my tab and / or my Mac for those purposes.

Used as a business phone with constant push and pull mode I'm getting a 22-24h battery time. I'm sure you have tested yourself but flashing another rom or kernel and making new tests doesn't hurt IMHO.
[Galaxy S II Q&A, Help & Troubleshooting] prinzhernan:
Well I undervolted and underclocked for the past few days on Lightning 6.1 and Ninphetamine and I must say the battery improved but not by a lot. So I reverted back to stock bec I just got sick of the blue everything (no offense, it's a great rom). Can't really feel the real world difference between stock and android dev roms. Maybe it's because I'm a light/moderate user? My day mostly comprises of a bunch of mail, a call or two, sms, a bit of gaming and lots of Facebook, Twitter, and Foursquare. So I guess my batt drain mostly comes from the data/3g connection more than anything else.
[Galaxy S II Q&A, Help & Troubleshooting] bnbasarir:
Dude, there's no need to get dirty. He's entitled to his oppinion and express his point. No need to insult, this is xda man, not Disney forum so I suggest you behave accordingly.
[Galaxy S II Q&A, Help & Troubleshooting] Remoteconcern:
Great post, very informative. Not sure about the douche bag picture though.
[Galaxy S II Q&A, Help & Troubleshooting] ithehappy:
This thread really is full of misinformation.
[Galaxy S II Q&A, Help & Troubleshooting] supermult:
everybody should grab his phone and set the cpu @500 Mhz. It might sound low, but if you would compare it to another gs2 running at full speed you wouldn't notice that much of a difference. i always have to double check, because i can't belive its really running at these insane low 500mhz.

however as long as you don't set 1.2Ghz as the minimum speed the power-management should clock your cpu just fine.
[Galaxy S II Q&A, Help & Troubleshooting] punshkin:
to add to the discussion: underclocking does save battery live (2yrs of rocking a G1 tought me so :P)

i have a question though: is SetCPU compatible with the Stock Kernel? (KG6 in my case)
[Galaxy S II Q&A, Help & Troubleshooting] bnbasarir:
I dont think its compatible with stock kernel.

SetCPU is developed by a memeber of xda. Try to search the forum and sure you will find detailed info.
[Galaxy S II Q&A, Help & Troubleshooting] __NBH__:
If you under volt you can see that 200mhz uses about 800mv but 1200mhz uses around 1100mv. So for an extra 300mv you get 6x the processing power so I would say under clocking doesn't help that much but under volting does. If 1200mhz used 6x 800mc then it would all balance out but the higher cpu speed is more efficient on the battery.
[Galaxy S II Q&A, Help & Troubleshooting] AndreiLux:
Stating an opinion is one thing.

Ignoring facts and empirical data and taking a single 36h test run for more worth than weeks of testing and years of experience on other devices, and dismissing what 90% of posters in this thread are saying is plain idiocy. Even the simple argument stating that an UV kernel does worse than stock is mind-blowing ignorance, go undervolt with Tegrak, which controls voltages on top of the kernel.

Go run a ****ing stress test at stock voltages and then again on lower voltages and notice by the palm of your hand how the one is hotter than the other and please come tell me again how useless it is to undervolt and how it does nothing.

People like him claiming things for fact without even backing it up other than empty arguments as "i know the truth" deserve nothing than being treated as imbeciles, because if nobody does then others who don't actually have knowledge about the topic start believing him.
[Galaxy S II Q&A, Help & Troubleshooting] ithehappy:
Eh :o
[Galaxy S II Q&A, Help & Troubleshooting] AndreiLux:
And to rest my case: Here's your post about your undervoltage "test".

Your idea of comparing battery life and undervoltage testing is playing Angry Birds for a random amount of time, being connected to Wifi for a random amount of time, and browsing a bit of web for a random amount of time and taking that all as a valid comparison to another run of yours, where who knows what you did differently, and taking that as some kind of empirical data so correct that you feel you need to gloat around in several threads denouncing other people and giving false advise.

If you still think you're even in the slightest bit of a position to argue on an actual base, then let me hear it instead of replying with senseless pictures (Shameless self-promotion? I don't even have an avatar, and look at your own signature, and posting history, ffs).

As for anybody else following this argument, I hope you're smart enough to draw your own conclusions.
[Galaxy S II Q&A, Help & Troubleshooting] ChongoDroid:
I find that every phone responds differently... Experiment with a different radio and find one that works well for your needs and then start applying incremental UV settings... I usually leave 1 GHz and 1.2 GHz alone. My phone can't handle much of a UV before becoming unstable so I only UV from 800mhz and down. Runs stable and smooth and I got 4 hours screen on time which is what I need in my busyish life lol
[Galaxy S II Q&A, Help & Troubleshooting] ChongoDroid:
Look man, I had regurgitated an idea on here earlier and was corrected with facts... At least know when to admit your wrong pal... Its called learning
[Galaxy S II Q&A, Help & Troubleshooting] m2smoe:
I don't understand how you can fail to acknowledge that when LESS electricity is used, the battery is drained less.

Honestly, it's mind blowing that you would actually believe that to be false. My 12 year old nephew understood it just fine.
[Galaxy S II Q&A, Help & Troubleshooting] s2d4:
Ur kid is rather normal..... the other guy is pretty damn special though
[Galaxy S II Q&A, Help & Troubleshooting] Logi_Ca1:
I did my own UV comparison a while back.

My methodology was to charge the phone to 100%, play a movie file from start to end, and compare the battery percentage at the end. All these happened while it's on Airplane mode.

The results? Well, the battery percentage at the end was exactly the same.

However, I don't believe this is because an undervolted CPU doesn't consume less electricity; That an undervolted CPU uses less electricity is pretty obvious. In my test perhaps, the difference might have been really miniscule.

I'm thinking that a test that stresses the CPU to the max, while having the screen off (taking the display out of the equation) would be a better test.
[Galaxy S II Q&A, Help & Troubleshooting] nobleskill:
This is like the 4th time I've started reading interesting posts by users in the sgs2 forums only to be put off by really over the top flaming and just plain idiocy. Honestly right or wrong, and you are wrong too by the way, posting pics like that is just annoying. You look like a wanker who as a last resort reaches for the personal insults.

UV = less voltage to a given clock speed. All thing being equal it will use less power operating at 100% of that cycle speed than one not undervolted running at 100% for the same time. Having the correct scheduler is vital in achieving overall power savings because if you undervolt all clock speeds for example, the higher clock speeds will use more than the lower speeds as a general rule so the scheduler knowing not to jump all over the place and to stay at the lowest speed capable of doing any given task is important. But then you also have to consider that a battery will loose charge faster if its warmer. 200mv @22c is different in terms of battery costs than 200mv @40c. Its not a black and white situation there are countless factors including the code of the applications being used. But as I say all things being equal........

Thanks op for the useful and good thread.

Sent from my GT-P1000
[Galaxy S II Q&A, Help & Troubleshooting] JugglerLKR:
for those who still think undervolting can't save battery. it is well known fact since 1827 ;-) and it called Ohm's law.

If you lower the voltage you lower the current (measured in amps, yeah those amps you familiar with in abbr "mAh"), that means that less amps drained from battery. if you drain less amps in the same amount of time obviously you will have more "battery life". but unfortunately in our case noone can measure a difference with required "observational error" - i can write here why, but it will take too much time to explain.

that leads us to 2 facts:

1) uv really saves battery, but not that much, coz screen and wireless are major battery eaters. as already said by someone here - you can have a noticable gain in battery life when you leave device in airplane mode with screen off doing heavy math calculations but without memory/cards access. it is usually a synthetic test, which is not normal use scenario. in usual browsing/playing/watching/listening battery gain with uv will be too small to bother. good kernel and modem can give you more gain in battery than uv!

2) you can't measure it, you can only "feel it". you can feel it coz uv device produces less heat ;-)
[Galaxy S II Q&A, Help & Troubleshooting] Whyzor:
While googling this topic, I came to this thread and this post is worth exploring with some real numbers. I have a Nexus 4, with stock kernel, max frequency is 1.5 Ghz, at 1.150 mV. At 700 Mhz, it uses 925 mV. Stock battery is 2100 mAh.

For an abstract unit of computation done at default max frequency at 1.512 Ghz for 1 second:

C * V^2 * f = C * 1.15^2 * 1512 = 2000C power used

At underclocked speeds:

C * V^2 * f * s = C * 0.925^2 * 702 * 2.15 = 1291 C power used to do the same work

where s is multiplier to get the original work done at stock frequency, for 702 Mhz, it's 2.15 (1512 / 702).

Typically on a full battery drain, CPU Stats shows that my phone was at max frequency for about 1 hr, out of 60+ hrs of on-battery time. Guesstimating the Snapdragon S4 Pro SoC uses about 1000 mA of power at highest frequency. The battery drain is 1000 mA*hr at max speed.

So the above power use at 700 Mhz is about 65% of power used at full power. During that 1 hr of peak frequency, at 702 Mhz, saves about 350 mAh (1291 / 2000 = 0.65, 1 - 0.65 = 0.35). This results in about a 16% (350 mAh / 2100 mAh) improvement in battery life. 16% increase is barely noticeable in most people's daily useage patterns. That's about 11 extra hrs of idle out of typical 70 hr idle. Or about 40 extra minutes of onscreen time out of typpical 4 hrs. Bottom line is there is battery gain, but not dramatic enough for most people to notice.
[EVO 4G Q&A, Help & Troubleshooting] thedarksavant:
I'm wondering if there is a known best way to swap out a bigger sdcard. I just used tar to back everything up on the old one and to put it all on the new one. That caused some weird issues though.

Car mode likes to pop up all the time randomly now

All my ringtones and alert tones changed to random music tracks

Most, but not all, of the apps that were on the card do not show in ADW

All my widgets are gone

My home screens are all "different", missing shortcuts and showing new ones.

This seemed like a fairly straightforward process, but the phone thinks otherwise. Any suggestions? Mostly for next time, since I've mostly gotten everything back to normal, although the last time I restored a nandroid backup, all my ringtones changed. Strangely, they changed to the same ones as before, so maybe it wasn't random.

Edit: I'm running CM7 if that makes any difference.
[EVO 4G Q&A, Help & Troubleshooting] teh roxxorz:
Well all you needed to do was just copy and paste them into folder on the pc. As for some of the widgets, music files, that's normal cuz the location may have changed. In the titanium backup settings, you make have to move applications back to the external/internal memory where you had it before, so it knows 'where' it is. As for the home screen, try going into the settings and do a restore, though it can't restore widgets, so you'll have to add them again anyway.
[Acer Iconia A500] birkholze:
I really likenthe stock browser but hate that it doesnt do desktop user agent without some work every reboot. Is there any way we can get a permanent fix like the xoom?

http://xdaforums.com/showthread.php?t=1052846

I really dont want to try to flash a zip made specifically for another tab but i would be very interested if we could get something like this for the iconia.
[Galaxy 3 Themes and Apps] Pinak.ahuja:
I cooked a theme in uot kitchen for cm6 it is an htc theme it looks great but there is on problem. The font color of date and clock in status bar is black which is barely visible (can't post a screenshot not working not even qtadb). here is the theme can anyone help in changing clock and date color to white?:confused:

link

http://www.multiupload.com/YPIWJ3O2PX
[Galaxy 3 Themes and Apps] dhirend_6d:
You need smali/baksmali edits. It s difficult for CM based ROMs. But I think Styloo maybe able to help you.
[Galaxy 3 Themes and Apps] cdesai:
There is a thread for that

Search on xda/google

It needs editing services.jar

You can change to other colors too
[LG Optimus 3D] wencel:
Hi there,

here's my patched media_profiles.xml which improves your LG 3D video&audio recording quality.

The sound is significant improvement, i was sick of that "crispy" noise. After trying this patch you'd hear the sound is more natural.

You only need to apply these settings (replace the file in your system).

No need for additional patches or extra camera apps!

For recording on SD I recomend to use Class 6 or better, but i've made some tests on Class 4 with pretty good results as well.

That this improves:

2D and 3D video bitrate to 15Mbps

Video sound to 48kHz at 256kbps

What do I need

Your rooted LG Optimus 3D

Any file manager (eg. Root Explorer)

Download my file mediaprofiles.zip (see link below)

How do I install it

Root your phone (if not already done)

Download the file mediaprofiles.zip

Extract the media_profiles.xml from the Zip to the SD card of your phone

In your phone file manager:

go to system/etc and make a backup of your media_profiles.xml (eg rename it)

copy or move the new media_profiles.xml (the downloaded) to system/etc

Reboot your phone

Enjoy improved video & sound quality

Note that some players may still report the sound is only LQ at 24KHz 64kbps but just try it, you'll hear the difference very well :)

BUGS

Front camera is not recording

Camera app may crash when saving video - however video should be saved correctly.

... will try to get this fixed asap ...

DOWNLOAD:

File attached
[LG Optimus 3D] nic85:
Thank you so much,great job

15mb are for 720p or 1080p in 2d?
[LG Optimus 3D] joker20:
thanks so much

great mod =))
[LG Optimus 3D] mannyb:
Seems to be working fine. Video is crisper in high detail areas and the bitrate in my sample video increased from 8 Mbit/s to about 12 or 13 Mbit/s.

Some weird behavior though: After I've shot a video (when I tap the Stop button) I get booted to the home screen instead of remaining in the Camera application. The video itself is fine though, no corruption or anything, but it's a bit of an annoyance to get booted.
[LG Optimus 3D] wencel:
Hi,

the bug with front camera seems to be fixed,

also the crashing camera app when saving the video seems to be fixed.

I'll make some tests and if this will work fine I will post the updated MOD asap....
[LG Optimus 3D] nic85:
I m using root explorer and i can't replace the mod file, i have read only message
[LG Optimus 3D] FiremakerP:
Had the same Problem. Had to deinstall Root explorer and update to the latest Version it worked then.
[LG Optimus 3D] nic85:
Ok it works, i had to set r/w

P. S. But 3D recording dont work for me

P.p. S after recorded 2 1080p video, the camera stop working
[LG Optimus 3D] wencel:
New MOD attached.

This is 2D/3D video still at 13-15Mbps

Bugs fixed:

Front camera working (with its default LQ settings)

Original Camera app is no longer crashing after saving the video

New bug:

Sound quality is normal - default, no improvement.

Will try to fix this asap.....
[LG Optimus 3D] nic85:
3d recording is working now?
[LG Optimus 3D] wencel:
its working on the two phones i got. feel free to test on yours. thanx.
[LG Optimus 3D] nic85:
it works now ;)

waiting for audio improved,and higher bitrate for 1080p,like 20Mb/s ;)

how can i/we support your work?have u got any paypal account?
[LG Optimus 3D] ik911:
everything stable ?
[LG Optimus 3D] nic85:
Yep :) Thanks to the dev
[LG Optimus 3D] ik911:
nice il try it

wont install :(
[LG Optimus 3D] abo_mara7:
Great work, actually the audio quality was the most thing annnoying me with this phone.

Waiting for it ti install.
[LG Optimus 3D] |ErosizeD|:
Men.. you dont look my post?

Im gonna quote myself....

OMg.... stupid. :rolleyes:

EDIT: ( dont be kid, you just downloaded my mod and edited media profiles.... i checked it right now... and is my custom media profiles... )

Check the original media profiles, then check my media profiles and you see the diference, and then check my media profiles with the media profiles of this mod.. the same, just edited the bitrate...

And 1 more thing about the "audio" tweak... Be carefull with that, because some phones cant handle it for any reason, and the recording will crash soon as the phone "exceed" the limit.
[LG Optimus 3D] mmace:
may sound strange, but can we have a "compromise" version?

I would love this as the macroblocking on 3D is obvious on my big TV, but my SD card isn't that fast, any chance of an 8mbps version? (for 3D, double the bitrate of stock but not so high it needs an expensive SD card)
[LG Optimus 3D] nic85:
omg! He do that??!
[LG Optimus 3D] nic85:
I think you should buy a class 6 sd card, or save the camera files into internal memory.. These mods are made for the best results as we can ;)
[LG Optimus 3D] mmace:
Not enough space in internal memory (I film a LOT), can't afford class 6 32Gb card :(
[LG Optimus 3D] wencel:
its all only about playing with the settings. If you think Class6 is too expensive than you need to use lower bitrates or phone internal memory.

Btw. everything is fine & stable up to about 12-15Mbps, once increased the original LG Camera app becomes unstable, but till 12-15Mbps it works quite fine with 2D and 3D.

And to be honest, with the phone 5Mpix camera you really don't need bitrates about 20Mbps or more - the quality improvement between 15 and 20 is not that much noticable. But everybody can try of course.

You even dont need to download the file, simply use any file browser & text editor to play with the settings.

My current working config for h264 codec is:

min bitrate 12.000.000

max 20.000.000
[LG Optimus 3D] nic85:
it's so strange....with 15mb bitrate i have some slowdowns(sd class 10)no problem with internal memory
[LG Optimus 3D] wencel:
yep internal memory is always the best way for highrates :-)
[LG Optimus 3D] |ErosizeD|:
The problem is not the write speeds...

The biggest problem is software limitations ( the apk )....

Im working on that, but doesnt seems to work, like overwrited by any other function.

And this guy, came here and rip my job.
[LG Optimus 3D] wencel:
hey man everybody can edit the file, i just played with the settings - thats it, not more or less. nobody is riping your job, am sure you'll be succesfull with your app.

am just happy with the settings, btw. don't forget to include the amr codec settings. and for the video you can only edit the h264 VideoEncoder settings - that is the most important thing (you can even leave out the Camera Profiles in this files - not much needed also).

... just a tip, don't get it wrong mate.

now am trying to concentrate on the sound quality - believe me am not hunting for higher video rates or stealing anybody's job i dont need that.

also am not giving this a high prio cause am in the middle of making some mods for 2.3 which will come for LG 3D very very soon...
[LG Optimus 3D] |ErosizeD|:
yea sure...

Before opening a new tread "like stealing me" , you can concentrate help to me, hey mate! i can't help you, to make a better mod, and not do your own "from my" mod.

My mod does the same, but also includes apk modifications, more or less effective.

And i repeat again, dont play with the audio... the phone is very sensitive at the moment...
[LG Optimus 3D] gismo918:
a stupid question....where "system" is located on the phone ? i cant find it :( and where is media_profiles stored ?

OK i find it
[LG Optimus 3D] wencel:
ag good, you only need any file explorer for rooted phone which is capable to display & modify all the files & directories.

/system is located at root and its subdirectory is also linked in the root /etc

so /system/etc or /etc is the same dir with the same media_profiles.xml on LG 3D :-)

Attached is the ORIGINAL STOCK media_profiles.xml only with extended bitrates for HD video - its setup for 11-15Mbps. This is tested to work 100% fine with LG stock camera app in all modes (2d,3d) and also the front cam is working fine.

Am sure for about 70% users who would like to improve a bit the video quality this will be just fine.

If you don't need the front camera to be working (eg u dont use it) you can go for higher bitrates (one of the symptoms of this edit for high bitrate is that the front camera stops working in stock Camera app).

My own app which is also improving audio settings in both 2d & 3d is not ready yet, still being tested & improved
[LG Optimus 3D] gismo918:
The problem is that i dont have the permissions to write at system....how can i do it ?
[LG Optimus 3D] wencel:
you can use eg. Root Explorer (available in the Market) and once you're in /system/etc or in /etc click at the top button MOUNT R/W - this will allow you to write the files in the directory (copy, delete, edit & save). If you don't click this the system is mounted as read-only so you won't be able to write files (add, delete, edit etc..)
[Nexus S Q&A, Help & Troubleshooting] goodboynyc:
I rooted my Nexus a few days ago and was looking at the kernels kernel manager had but neither of them are 2.3.5 compatible nor have I seen any kernel on the development forum thats 2.3.5 compatible. Is it just too early for them yet?
[Nexus S Q&A, Help & Troubleshooting] SA-07:
Matr1x is 2.3.5 compatible....I just havent updated the kernel manager post lol
[Fascinate Q&A, Help & Troubleshooting] Dan Ang:
Hey everyone, I just have a question. Ever since I updated to the 8/27 nightly, I have been having phantom button presses, where the menus will keep popping up.

Anyone have any idea what I am supposed to do about that?
[Android Software/Hacking General [Developers Only]] theValrond:
Hey guys

Just a quick question..

Is it possible to screen record my HTC desire cm7 without having to use the sdk?

And if so.. how?

Thanks