yashsingh1/xdaforums huggingface dataset:
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] Gary13579:
YouTube is in no way a reliable source of information when it comes to technology. Unfortunately, neither are these forums, as witnessed by the masses of people that consistently state underclocking saves battery. I've posted about this several times before, and it seems no one ever listens or trusts me, so I'll try to lay it out as simple as I can. This effect is very well known by old school Linux nerds that would push their notebooks to get longer battery lives. Intel calls this effect HUGI -- Hurry Up and Get Idle. It essentially states that the faster a CPU runs, the more energy it consumes, but it *also* finishes it's work faster. Finishing work faster is important as it means that the CPU can go back to it's "Idle" state faster. The idle (or sleep) state uses virtually zero energy. Let me see if I can pull up the voltage table for a phone... here, found this for the Sprint Nexus S 4G and it looks to be accurate based off my memory of the CPU.

1000mhz - 1.25v

800mhz - 1.20v

400mhz - 1.05v

200mhz - 0.95v

100mhz - 0.95v

Now, let's say we have a task that takes 10 seconds to complete at 1000 MHz. 10 seconds times 1.25v is 12.5v (I know, I know, voltage doesn't work this way -- but it's a good enough approximation to demonstrate this effect (and it's to scale!) and I'm too tired to explain volt vs amp vs watt, it's 5am here). At 100 MHz, though, the *same exact task* would take 100 seconds! 100 seconds times 0.95v is, wow, 95v!

By capping your CPU to 100 MHz (10% of max), you are effectively using (95/12.5=) 660% more energy to do the same task.

Now, there are scenarios where underclocking can help you, such as when your phones CPU is running at 100% 24/7 because of ****ty applications or leaked wakelocks. Although underclocking does appear to somewhat fix this, it's a complete ****ing hack and won't give you anywhere near the amount of battery life that you'd get by uninstalling the ****ty app and letting your phone go to sleep.

Make sense?

Sent from my Transformer TF101
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] uneek14:
Wow! Thanks! yeah it does make sense! I guess I should uninstall setCPU...I'm not sure what else its used for

thanks again
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] kanej2006:
That's great, a very efficient way to save battery...

So it's basically like a modern pc running a core i5/i7 that runs at 2.5GHz when idle or when no power is needed. However when power is needed the intel Turbo boost kicks in & increases clock speed to 4.2GHz or even higher depending on what the user set it to.

In my case my PC cpu idles at 3.4GHz & when gaming or video editing it boosts to 4.7GHZ which I've manually set it to.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] markmessier8888:
Hi there!

I dont see the "disable fast dormancy " option

This is what I have listed:

Run dumpstate/logcat/modem log

Delete dumpstate/logcat

run dumpstate/logcat

Copy Kernal log to SD card

Run modem log

Copy to SD card

Exit

Which do I select?

Thanks
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] craige:
I only get 4hrs, playing video with full screen brigtness on my Note :-(

Can you guyz test it on your device after full charge how much drain you are getting after 1hr. of video playback at full brigtness - I get around 75% battery after 1HR of playback.

PS: No background task and 720p video via SD card.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] Gary13579:
Android does this automatically. Manually lowering the clock speed has a negative impact on battery life however, as pointed out by my previous post.

Sent from my Transformer TF101
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] kanej2006:
It's not that great. I've not tested it myself but Samsung claim around 8 hours continuous playback, but probably at 0% brightness!!
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] markmessier8888:
anyone?????
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] joshoon:
Wow, I never realised that SetCPU doesnt make sense at all.

Much people on xda claim it actually can save up a lot of battery,I don't know who i have to believe now.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] notegalaxy:
Does anyone else have huge amount of partial Wakelocks from GTALK_ASYNC_CONN? I've tried freezing loads of suspect google apps (obviously including google talk) with no luck. Help please!
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] Silenus21:
I use Autostarts on my device.

It disables those apps that run in the background eating your battery and data.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] Loftus:
Just be aware that this could actually make your radio's battery consumption worse. It depends on your phone's data usage pattern and the network's RRC state transitions (and timers) configured by your network provider.

Best advice is try it both on and off and use the mode that works best for you.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] Hasseno:
quick question.

just what does fast dormancy does, and why disable it?

---------- Post added at 12:30 PM ---------- Previous post was at 12:27 PM ----------

quick question.

just what does fast dormancy does, and why disable it?
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] vileofmsz:
when the brightness is on the lowest setting, is it still usable?
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] dchsub:
Have a read

http://galaxy551.wordpress.com/2011/09/05/fast-dormancy-and-battery/
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] sandykalugdan:
Try it and see for yourself.

Mine is at lowest setting and I'm still able to use it.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] craige:
No1 wana put in their experience with respect to my question ? [ #22, pg.3]
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] MatanZ:
While what you say is generally correct, it is important to recall that power draw is (approximately) proportional to square of voltage, not to voltage, so in your example you have to calculate 100*0.95*0.95/10/1.25/1.25, which is 'only' 480% more.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] edanfalls:
The most important thing is to only change settings which actually affect things you use most. People say "do this, do that" but it's not applicable to most people.

For example: yes, it increases battery life if you use only 2G instead of 3G. But it's only worth doing this if you're making a lot of calls. Yes, it helps to reduce brightness, but only if you're using the screen a lot.

I'm coming from an HD2 on gingerbread. The horrible thing on that was that it used so much battery when in standby. The Note has been fantastic in this regard. I used to switch to Airplane mode whenever I was travelling on the underground to conserve battery, but that's not necessary anymore :)

In fact it's been pretty good all round (with brightness on auto; WiFi on; GPS on; 3G; auto-sync; manual updates). I get 2 days of moderate use out of it with no problem at all.

The only activity that is particularly draining is web browsing (the AMOLED really uses up a lot of battery when displaying white). I've started using power saving level 1 for web browsing; hopefully this will help.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] andresHTC:
Muy bien!

Very good! I think the same.

Enviado desde mi GT-N7000 usando Tapatalk
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] skymota:
Two full days with normal use for me!
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] monomer888:
Interestingly, activating 'System Power Saving Mode' in Settings > Power Saving appears to effectively underclock the CPU, with maximum frequency rarely going above 800Mhz. (It does hit 1200Mhz on rare occasions if CPU loads are high enough).
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] edanfalls:
Neither was your post.

It's not an effect, but a principle which is only valid in certain conditions. On low-powered devices, it almost never holds true.

Nothing really bothers to use this principle. It's useless for software as it doesn't know enough about your hardware setup. It's useless for (typical) hardware as it doesn't know enough about the task ahead.

Correct.

False. As MatanZ pointed out, the power consumption is proportional to the voltage squared, but also the frequency (otherwise you're just talking about the power per op)[and the capacitance of course, but we can assume this is fixed].

energy consumed ~= (operations / frequency) * frequency * PD^2 * capacitance

Frequency cancels out. So in your example, you get a 42% reduction in energy consumption when running at 100MHz compared to 1000MHz.

Here's an example with an Intel mobile processor.

Make sense?
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] PsYcHoTiC_MaDmAn:
hate to sound like a noob. but on battery saving tips.

when I had green power installed it switched wifi off when screen was off (tried setting that under wifi settings, but no effect), however my phone was randomly freezing, so after coming across a thread here explaining that there was a conflict with deep sleep mode, I un-installed it. no more freezing.

now with the standard samsung/android power saving options, not getting major savings (19% left after 11hours) (compared to getting 38 hours with green power installed). what I am noticing is that android OS is consuming the majority of the power (74% at the moment) vs previously about 15% (50+% was the screen)

also with the samsung/android power saving mode finding the phone to be somewhat laggy at times. (CPU spy says the 1400MHz isn't used all)

now I've been searching battery tips and threads on various apps. wondering if paying for the juice defender app is worthwhile (switching of 3g does seem to be worthwhile(low signal here - plus I have wifi available most of the time)) as the free app is borderline useless for what can be done with it
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] EarlZ:
Now that i can do a lot more stuff with the note as compared to the s2 im starting to feel the need more battery juice.. seems that i can easily drop it from 100 down to 10 in just a few hours of heavy usage. Hopefully samsung can come up with a larger bettery w/o the added bulk.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] Tee3D:
Turn off Data Network Mode if you're not using internet... this can be a lot save battery life with phone still working...

I found it when I watched movies on Note (fully DVD files on MX Player, no convert files, full scale sound and mid light). I just turn off Data Network when I don't like any pop up such FB, WhatsApps notification during movie time.... and found it only 20% battery downward after a movie...;)
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] dawe94:
Rocket Rom V19 + Abyss Note Kernel 3.2 with governor "on demand" seems to work very fine for me. Never had better battery life before (with stock rom i had maybe 70% of my current battery life)
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] Vrayhem:
With the latest LA4 rom my battery life has slightly decreased compared to the previous rom I had, which was KK9.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] jeromepearce:
I am getting to the point where I will get a spare battery and keep it with me. I have two Chinese ones, but they last half the time (for $9 each, though!). I don't often run out during the day, but keep one handy in case I give the Note a tough day.

When I next get some accessories I'll probably get a new one and a dock and just charge both overnight.

I don't want the bulk of the large batteries as the note is so sleek as it is! I am also getting a custom Noreve case to use while working, and a nutshell one for casual wear, and I definitely want to use them.

Typically I get an hour of calls, BT all day, WiFi all day (trying to prevent that with Juice Defender right now), and about an hour of surfing / downloading. That just about kills the battery. I also have piss-poor reception at home, so that makes the phone struggle most of the evening.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] Braxos:
You need few recharges till you get the battery stats on last stand so wait 2-3days
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] craige:
Hmmm.. am sure sumbody can answer my query on Page 3, #22

:-)
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] edanfalls:
4 hours sounds about right at 100% brightness.

I get around 7 hours at 3 out of 11 brightness.

I assume you're watching outside in direct sunlight to want to use 100% brightness for videos!!
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] PsYcHoTiC_MaDmAn:
I managed to get 2 days out of the battery this time. light usage (about 2-3 hours wifi browsing, 2-3 hours gaming, 1 hour music - over the 2 days)

did a hard reset (vol up+down+power held down till it switches off - though continuing to hold didn't bring up any menus as its supposed too) and after that Android OS wasn't sucking up CPU cycles and the CPU was going into deep sleep when not needed.

dont know if it'll help anyone, but its worth a try
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] Braxos:
Xxla4 does wonders on battery life. Yesterday was sleeping wifi was on autoupdates off 2g not 3g because when on 3g i get switched from 2 to 3 all the time do bad signal so it is useless Samsung push disabled and battery lost every 3 hours 1% normal with kl7 it was 30-45minutes for 1% with same configuration.

Brb getting battery stats SS

Shhhhhhh working nights coming home at 06:30 1-3 hours bf3 then bed time
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] zkyevolved:
I have to agree. Battery life is much better on the new German rom. I am now 12 hours off the charger with some use and I still have 63% fantastic.

Sent from my Samsung Galaxy Note.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] Tee3D:
Hi Guy, what is your player using? and your files format...

For me, I'm using MX Video Player with raw DVD files (directly copy from disk to SD card), full lound, mid brightness but I turned off "Data Network Mode"... its about 20% drain off...

If u like to get more hour running, try to turn off Data Network, I think it will work...
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] Spo0f:
Regarding the battery live, i have a question:

So, no overclock with stock rom/kernel? I've installed setCPU, but i only have 200-to-1400mhz.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] trickyhenry:
I use juice defender and it increases the life by 20%.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] xenjkeee:
thank for juice defender gona test it !
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] BLASTphemus:
Correct, you must install saurom to get the option to overclock using setcpu. Flashed it last night and I'm running stable at 1.8 but it's sucking a lot of power.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] numbnutsuk:
10 steps to really increase your battery!

In settings...

1. Turn brightness to 0.

2. Turn display to movie.

3. Turn off auto rotate display, animations and touch light.

4. Turn off all feedback sounds and vibration

5.turn on power saving mode

6.in location turn off network and gps

7.accounts and sync, turn off auto sync. And get emails and widget syncs manually.

8.turn off motion activation

9.don't use a live wallpaper

10. When your not using your phone hold the power button and turn off data network connection. Manually turn it back on when you need it to connect.

Sent from a noob on a new note
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] ebhsimon:
These do look like good tips, although I don't think I need all of these to last 1 or 2 days. I think once 6 or more of your tips are employed it'll stop feeling like a smartphone and start feeling like something I'm trying to baby even though there's a power point next to me xD

I usually have everything on (sync, wifi, 3g, half brightness, auto update), and I use franco's kernel 200-1400mhz - ondemand.

I take it off the hook at 6:30am and by the time it's 11pm I have about 65% left with ~2 hours onscreen time.
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] imazehost:
Me

Hi !

I have Chrack 10 Rom - Speedmod K3-10 Kernel and my settings is this:

Auto Sync - OFF (very importand this because i see much different from the time when i disable it)

GPS - OFF

Wifi - I have enable it about 24 hours and if i am out and i can't find wifi i have open also data but 2G never 3G

Bright i have it auto

Auto rotator ON

So my phone i use it many hours per day, i send many many whatsapp messages and many tango calls, also phone calls

I charge it about every 26-30 hours

I don't use any extra apps for save battery or CPU
[Galaxy Note GT-N7000 Q&A, Help & Troubleshooting] Supurr Note:
Samsung note battery tips

Hi ! I'm from the philippines and I just want to share my experience regarding conserving tips for the battery life of the samsung note.

After countless "googling" for tips on how to prolong the battery life of the note, here's the "combo" that made me feel obligated to share with other note users:

- DISPLAY is the major batt killer ( I set mine with the toggle parallel to the letter "A" of automatic brightness) and NO i didn't check on the automatic brightness option

- WIRELESS AND NETWORK ( Common sense, turn off wifi and BT when not in use)

* Under my MOBILE NETWORKS, since I dont use 3g, ( I unchecked packet data, roaming) AND set your network mode to GSM ONLY

- LOCATION ( Turn off "use gps satellites")

- SOUND ( No vibration) All my audibles are ON

- ACCOUNTS AND SYNC ( background data is unchecked) NO SYNC whatsoever

- MOTION ( uncheked all)

- VOICE INPUT AND OUTPUT ( turn off driving mode)

note: this is based on HOW I USE my phone. will depend on how you use yours. a lot of people has 3g and sync needs.

LASTLY - try to charge your phone with the power OFF. 3 hours more or less should do it. 5% before you charge it. Just to "surprise" the batt.

THE IMPORTANT THING I NOTICED with this setting:

UNDER TASK MANAGER, RAM went down to 4XX/800MB from constant 6XX to 7XX/800MB

BY THE WAY, power saving option is UNCHECKED :) I don't want to risk a slow fone, eases my mind

AND FOR THE MOST IMPORTANT PART ... I'm now on my 3rd day with 70% more or less batt power.

NO AFTERMARKET APPS regarding "BATT SAVERS"

Hope this helps some of you who uses their samsung note like mine (normal text, call, camera, editor etc). And for those who can't exactly copy my settings, I hope some of the applicable settings help you :)

THANK YOU :)
[General Questions and Answers] mspt:
I need a small amount of help with my sensation.. I have been using mikes htc revolution hd for a while and the rom is good... however after his new update it now requires a firmware update.. not to fussed about doing this however but eventually decided to try it..

after downloading to the sdcard and rebooting to hboot the device asked me if I would like to update the image files and this was accepted.. It then rebooted and said update failed cid incorrect.

The phone was running hboot 1.18 - and revolutionary s-off

I am now stuck with hboot 1.23.0000 and although s-off I have a ***locked*** at the top of the hboot menu..

Can anyone give me a link to a possible fix or hboot update that would give me back the hboot 1.18???

Any help would be good to be honest...I am now limited to the roms I can use :(
[General Questions and Answers] belalb3:
when i was testing some roms i faced the same problem & i didnt know how to change the hboot alone so i just flashed a stock rom and got it back!!
[General Questions and Answers] mspt:
Will that remove the locked status?
[General Questions and Answers] belalb3:
it'll restore it to 1.17 or 18 then u can use revolutionary
[General Questions and Answers] mspt:
I will give that a go. Cheers
[General Questions and Answers] mspt:
Thanks for your help however I kind of did the following to resolve my issue..

What I Did…

I found the following link and followed step 4 “STEP 4. WRITE SUPER CID [YOU ONLY NEED TO DO THIS ONCE]-“ http://xdaforums.com/showthread.php?t=1192300

Once I had changed the cid number to “11111111” I went back to the firmware page and downloaded :

Firmware from 3.12.401.2/102 RUU

--- MD5 checksum: 3414D69D4985B69CE12221C1DF976C2D *PG58IMG.zip ---

Added this to the sd card rbooted phone in to hboot menu and agreed to update again.

The firmware updated successfully.

I have now been able to add rev hd 6.01 without issue.

I just need to look into why I still have ***locked*** on my hboot menu.

Thanks belalb3 for your help.
[Milestone 2 General] Sobi-Wan:
Hi Everyone!

Does anyone know if latest CM7.1 mod by Tezet is compatible with endless7-mod-for-tezet-cm7-v1.15.zip by Endless7?

I'm using already Tezet's cm7-111129-2153-NIGHTLY-Milestone2 with Endless7's patch, but I'm consider an upgrade. I know, that Endless7's patch was created for previous version of Tezet's CM7.1 and I'm affraid that I can break something, by combining cm7-120104-1805-NIGHTLY with endless7-mod-for-tezet-cm7-v1.15.zip, Does anyone know if such upgrade makes sense?
[Milestone 2 General] VooDooKill:
It does not work... wait for an update of Endlees7
[Milestone 2 General] Sobi-Wan:
thanks for Your info!
[Xperia Play Q&A, Help & Troubleshooting] XperianceIT:
MODERATOR- Please move to correct sub-forum, it originally started as question but was solved and i turned it into a guide. Thanks.

Well... i had been trying to figure out how to change the carrier name in the notification bar for a few days and with some luck and some good tips from XDA Members and from antEris for pointing me in the right direction... here is a guide to help others who may want to change theirs as well!

**CAUTION- You will need to re-enter your google account info. This will wipe your contacts, and sync settings, so make sure you re-sync once complete!!**

Requirements:

Must have ROOT

FOR CDMA Devices ONLY! Will NOT work on GSM :(

Untested on all others. (if you test it on r800a, or any other one, let me know so i can update this.)

Things you will need:

1. Ninjamorph (Market)

2. HxD (google it, its free)

3. USB Cable

Method 1:

Steps:

1. Using Ninjamorph, select "New Project"

2. Navigate to system/framework

3. Select the framework-res.apk

4. Exit to home

5. Connect phone to PC

6. Browse to AndroidThemes/workspace/framework-resapk/res/xml on your sdcard.

7. COPY eri.xml to the desktop.

8. Now open the HxD application on your PC.

9. Drag the eri.xml into the big gray area.

10. You will now see a bunch of code, scroll till you see "Verizon Wireless"

11. Highlight Verizon Wireless, starting from the last letter going back to the "V" in Verizon.

12. Now you can type in what you want, UP TO 16 characters. If your custom banner is less than 16 characters, use the SPACEBAR and hit it for a total of 16 characters including how many your custom banner is. (i.e... XperianceIT is 11 characters, so i hit space bar 5 times)

13. Once thats done go ahead and exit HxD, it will ask if you want to save, say yes.

14. Now place the new eri.xml back on to the root of your sd card.

15. Disconnect Phone from PC

16. Open Ninjamorph

17. Select "Existing Project".

18. Browse to the ORIGINAL eri.xml and select it.

19. Now browse to the eri.xml you placed on the sdcard after modifying it.

20. Hit yes, a few times here, it will now take you back to the Ninjamorph main screen.

21. Select "Finish Project".

You will now be prompted for a few things, like if you want Ninjamorph to optimize it since its a .apk, I chose NO, not sure what will happen if you choose yes. Once thats done, reboot and enjoy!!

Method 2:

COMING SOON!

dont forget to thank/donate to me if you like this and it helps you out!
[Xperia Play Q&A, Help & Troubleshooting] Fokezy:
I'm not 100% sure on this,but as I recall,build.prop changes are undone after each reboot. You cant see changes until you reboot,but it gets reset,so you cant do it.

But google for it and you will find an answer
[Xperia Play Q&A, Help & Troubleshooting] fma965:
That's not true. If it was we wouldn't be changing dpi, model etc via build.Prop
[Xperia Play Q&A, Help & Troubleshooting] kupo5131:
You mean in the notification drop down? I believe that information is stored in the framework not in the build.prop.