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I'm trying to figure out if it's worthwhile to turn off mobile data when the screen is off, and turn data back on when the screen is turned on. It would also be necessary for me to occasionally switch mobile data on even when the screen is off in order to check email. (I'm thinking something like 15 minutes off, 3 minutes on)
Does anybody have any success stories or advice whether I am likely to see any noticeable battery savings by doing this?
I started doing this from when I first got my evo. Just turn off mobile data, you can still get texts and make calls, and then turn it on when you need it. Also turning off background data in settings also adds additional battery, but just enable it when you need the market. I went most of all day with about 80% of my battery still good between it just being off, using the mobile data here and there, and some texting.
Edit: I don't use a tasker, I just use the power widget in my notification, so I can turn on my mobile data on/off with just a tap. And if you're like me you don't know when you actually need it or for how long. So I find it easier and more effective to do it manually.
teh roxxorz said:
I started doing this from when I first got my evo. Just turn off mobile data, you can still get texts and make calls, and then turn it on when you need it. Also turning off background data in settings also adds additional battery, but just enable it when you need the market. I went most of all day with about 80% of my battery still good between it just being off, using the mobile data here and there, and some texting.
Edit: I don't use a tasker, I just use the power widget in my notification, so I can turn on my mobile data on/off with just a tap. And if you're like me you don't know when you actually need it or for how long. So I find it easier and more effective to do it manually.
Click to expand...
Click to collapse
X2, i use switch pro to toggle mine. Battery drops about 2% per hr while data is of with screen off even when listening to music from my play lists.
I turn off the "always on " mobile data and noticed a big difference. The data turns on and off with the screen.
Sent from my Evo using Tapatalk
Over the months I have been an Evo user, I have collected some valuable information that all users should probably know in regards to maximizing battery life. Besides the stuff about 4G and a few specific options, these steps apply to pretty much any other android phone running 2.2, and a lot of them apply to versions below Froyo.
General Lithium Ion Battery Information
^^This link includes stuff about charging, including trickle charging aka SBC (Why NOT to use it, or at your own peril)
My tips for good battery life:
Tips for Non-Rooted users:
1. Turn off all radios when not in use.
(gps, Bluetooth, wifi, data, 4g) Use a widget like the default HTC power widget or Switchpro from the market. The radios of the phone draw power if on even if the user isn't actually utilizing the radio's functions.
To manually turn off radios without a toggle, go to menu>settings>wireless & networks.
Wifi uses less battery than 3G, so use wifi when you can.
**IMPORTANT DISCOVERY**When you turn on your 4G radio, then turn it off, it will keep scanning and turning off all by itself.
The problem is apparently exacerbated by a 4G toggle widget, which causes the phone to automatically turn on 4G at boot. This repeating of scanning and disconnecting severely drains battery life, and sadly, no matter what ROM or kernel you use, there is only one way to fix it:
-If you don’t use the toggle widget, then you have to reboot your phone after turning off 4G
-If you do use a toggle widget, then you have to remove the widget from your homescreens, then turn off 4G via settings, then reboot.
**To check to see if this is happening, download alogcat off of the market. Look for the lines saying: I/Wimax ( xxx): <DC> Try to establish a connection to DC server.
E/Wimax ( xxx): <DC CONNECT> IO error: msg=’/xxx.x.x.x:xxxx –
Connection refused’
Over and over again.
2. Juice Defender is one of my favorite apps. Basically it controls your data for you to maximize life.
More explanations are on their page, search it on the market for free, or upgrade for more features.
Here are my settings for it: Click me
Note that for me at least, juice defender likes to deny apps data privileges whether you allow them or not, so screen on = data on works best for me.
3. I love live wallpapers, and I’ve always been a fan of pixel zombies, but they are really only good for showing off due to their battery drain.
4. Go to menu<settings<wireless & networks<mobile networks<disable always on mobile data.
Product F(RED) said:
To clarify, "Always On Mobile Data", when turned off, lets the 3G modem go to sleep after the screen has been off for 5 minutes. It doesn't interfere with anything like email or any other application that requires an internet connection at that moment because it turns on on-demand rather than being on all the time and wasting battery.
Click to expand...
Click to collapse
5. Set your screen timeout to something that fits you
This will prevent your phone from staying on when you don’t manually turn off the screen. Also with this, manually turn off your screen when you’re done with your phone.
6. Everyone has that issue where the first ten percent go the fastest.
This is due to two things. One is that these types of batteries stop charging once they get to 100% to prevent damage, and begin charging again at 90%. This means that you could potentially unplug your seemingly fully charged phone at 90% actual charge. The second is number 7.5.
6.5. Use the trick described in this thread, it works.
My idea behind how often you should do it is once a month, if you flash a new ROM, or if you stop noticing the benefits.
This is the calibration technique recommended by HTC themselves. Check it out!
7. Task killers used to be the shiz, but no longer.
Here is the ultimate, in depth, graphically assisted, explanation by the famous Fresh ROM's chef, Flipz. Shortly, in light of recent testing, really don’t do anything but force apps that the android OS needed to be open, and thus didn’t close, to re-open. So try not using them, unless for stuff like trying to figure out why your phone isn’t sleeping with system panel. You really won’t notice a performance difference, and the adverse effects you aren’t seeing will stop
+=+ A good alternative is the application SystemPanel Pro. It has a free version, but I highly reccomend purchasing the paid app. It basically monitors everything going on with your phone's usage both in real time an in terms of usage history. If your battery is draiging fast, it tells you what app was doing it, how much it was doing it, and allows you to stop it.
8. People posting screenshots of the Battery screen as proof of long lasting battery are giving statistically irrelevant information.
See HERE That screen shows time since last REBOOT, not last charge. This isn't always the case, but a lot of people will post a lot of things about battery life, but look for definitive screenshots and testing results before you break down and cry due to the poster's life and yours.
9. I'm sure you have all heard around that your phone isn't "sleeping".
This is referring to the phone's "awake" time, hence the name. When you go to menu>settings>about phone>battery, you can compare the two numbers, "up time" vs. "awake time." Generally, up time refers to the amount of time since the last reboot. The "awake time" is how long the screen has been active. The problem is, a lot of the time, due to the endless possibilities of inconsistencies between apps/ROMs/kernels/phones, the phone will not go to "sleep", drawing power proportionate to the screen being in use when it reality the phone is sitting idle.
If you compare these numbers, and they are the same, or if you note the difference, turn off the screen for a minute, then re-check and they are the same, then your phone is not sleeping.
One solution is to reboot.
Usually, SystemPanel will show an app that has gone "rouge" and is keeping your phone awake.
Uninstall applications/reinstalling them slowly, checking after every install to see what is causing it is one tedious but surefire solution.
Lastly,
Follow these steps that I have discovered almost always work.
1. Reboot phone.
2. Instantly upon reboot, as soon as you gain control, open up some type of monitor/taskkiller
3. "kill all" tasks on startup; about 5 times in quick succession should do the trick.
4. Turn off the screen and leave it for about five minutes.
5. Check the up time v. awake time and see if they are the same.
6. If they are, repeat steps 1-5. If they are different, you are good.
Tips for Rooted users:
1. Try out custom kernels.
By going to the EVO 4G Android Development section of the forums, you can see all of the different kernels being developed. These allow for all kinds of modifications like underclocking the CPU and undervolting, both of which save battery. To see how to use them, read the FAQ's in each thread's OPs.
Here is a great guide to custom kernel's by mroneeyedboh.
2. Use SetCPU in compliance with whatever your custom kernel allows.
This site will explain the basics of SetCPU: http://www.pokedev.com/setcpu/
-Profiles from SetCPU should usually involve these for battery life optimization:
-Screen off at the minimum clock speed for both, with the max raised on level if sluggishness is apparent
-A temperature greater than “X”
-General power related profiles that lower cpu speed at lower battery levels
-Here are my SetCPU profiles: 1 , 2 , 3
-My profiles change a lot as time goes by, because different kernel creators recommend different settings. I suggest reading up on whatever kernel you are using to gather settings.
------------------------------------------------------------------------------------------------------
NOTES:
*Some apps or processes begin to run at startup and keep the phone awake. These apps are not detected by things like spare parts or system panel, unless sometimes represented in the "system" process, in which case its usage will be unusually high.
This shouldn't take more than three repeats, and if it does, you need to factory reset, and slowly add apps back to see what's causing the problem.
___--- When it comes to actually "calibrating" one's battery, there are a couple of methods floating around. The method I first learned is to charge the phone all the way, boot into recovery immediately, and "wipe battery stats". Then reboot quickly, and run your phone all the way to death without charging it, then charge it all the way without interrupting it, and you should be good to go. Do this when changing ROMs/kernels for best results.
----When it comes to people claiming 20 plus hours of moderate/heavy use out of their current setup or other ridiculous absurdities, consider my position: No matter what you do, the Evo battery is the Evo battery. You can tweak it and customize it with kernels, ROMs, and settings, but none of that will turn it into a car battery. The main problem (besides a false sense of pride) that leads to these reports is the misunderstanding of what the usage levels are, so here’s my best summary:
* *Light usage – Phone screen actually on for maybe 4 hours. Things like a few texts, some emails, 20 minutes web browsing, etc.
* *Moderate usage – You watched a few youtube videos or similar apps, sustained web browsing, hundreds of texts, some games. Hours range from about 5-10 of screen on
* *Heavy usage – LOTS of video watching and games, or some high def gaming/movie watching for at least an hour to an hour and a half in total, with lots of emails and texts, browsing, and other app shenanigans
*I’m sure everyone doesn’t agree with all these numbers, but this is most likely a good average of what powerusers think. All specific hourage may vary due to differences in phones, batteries, ROMs, and kernels… Which also means that most battery comparisons are pointless; it’s only what you can improve on that counts!
I’ll update this whenever I see good stuff, people remind me, or I remember/come across things I do.
Hope it helps everybody!
Hit the "THANKS" button if I help you!
*All this is available in the link in my signature
hfuizo said:
I'm trying to figure out if it's worthwhile to turn off mobile data when the screen is off, and turn data back on when the screen is turned on. It would also be necessary for me to occasionally switch mobile data on even when the screen is off in order to check email. (I'm thinking something like 15 minutes off, 3 minutes on)
Does anybody have any success stories or advice whether I am likely to see any noticeable battery savings by doing this?
Click to expand...
Click to collapse
I am the owner of SuttCo. We developed the Locale Mobile Data Plugin (which can be used by Tasker). It has a condition that can keep tabs on your data use and a setting which can be used to shut off mobile data.
I know Tasker and Locale have screen off/on conditions. I don't have time to run any tests for you (busy working on a new plugin), but if you're willing to do a semi-scientific study and report the findings here... I'll comp you a copy of the plugin. Shoot me a PM.
Good stuff
Sent from my PC36100 using XDA App
glad i found this post... improving batt life all written up, great job!
Juice defender takes care of turning off ur mobile data and turning it on when needed, all by itself
Sent from my PC36100 using Tapatalk
Not to say that turning off mobile data when you're not using it is a bad idea but I've found during my own personal experience with trying to improve my battery life for daily use that using titanium backup to freeze Google Backup Transport.apk is also a helpful solution. Other things that helped are going into Accounts & Sync and turning off background data because believe it or not, that stuff eats your battery up like a fat kid eating cake...hahahaha...Anyways, another tip would be to hit up Display and turn off Automatic Brightness and play around with the scroll until you come to a setting where you can see because I've found that the Automatic brightness eats up your battery too, not as fast but it does! Another thing that I've done is this and although there are task killers that would do this for you....I've decided to do this myself and after using an app such as Facebook or the brand new CNN app, I've gone into Applications and force close them out just to save battery and all of this nonsense I'm talking about has helped me out alot......NOT TO BRAG but using these little tips of mine, I've gone from 2 and a half hours and I was at 70 percent to 4 hours, 36 minutes and 48 seconds and I'm at 68 percent.....and that's with out turning my phone off, that's talking on the phone, texting, checking my facebook, downloading some apps here and there and just leaving it on in front of me at my desk.
Please don't start posting "Oh what, you want a FUC%ing cookie now" and all of this....all I intend to do is help someone by sharing my story....that is all! I got to get my butt to working again...hahahahaha
hfuizo said:
I'm trying to figure out if it's worthwhile to turn off mobile data when the screen is off, and turn data back on when the screen is turned on. It would also be necessary for me to occasionally switch mobile data on even when the screen is off in order to check email. (I'm thinking something like 15 minutes off, 3 minutes on)
Does anybody have any success stories or advice whether I am likely to see any noticeable battery savings by doing this?
Click to expand...
Click to collapse
I have setup a few Tasker profiles to do this exactly. I did this instead of JD because the free JD doesn't do exactly what I want it to do, and I don't want to pay for JD when I can emulate it with Tasker.
The only thing I cannot do, that JD can, is keep data on while there is an active connection. With JD, if you turn off the screen while there is an active data transfer, it will wait until the transfer finishes to turn off data.
According to the Tasker website, there is plans to make a state/event "connection data rate" which would make it possible to do this. But that has been in their plans for quite some time. (I actually happened upon this post while searching for a way to check if there is an active data connection with Tasker.)
Also, with the way that Tasker views an "Open program", the program has to be open in the foreground in order to be considered open. This makes it tough to keep data on when a specific program is open, unless you're planning on keeping that program in the foreground all the time. To get around this, I created a profile that leaves data enabled while I have headphones plugged in, since I have headphones plugged in while using all the programs that I want to have constant data with.
EDIT: here are the profiles, and the tasks that go with them (I also included a profile that turns off the wifi antenna after disconnecting from a wifi access point.)
dl.dropbox dot com/u/4658512/profiles.zip
dl.dropbox dot com/u/4658512/tasks.zip
(It won't let me post links because I don't have enough posts, so just take out the spaces and replace dot with .)
Hello,
Title says it all...
I would notice overnight that my battery would be completely horizontal (no drop) and thought it was the combination of SETCPU and JuiceDefender (night profile + screen off drop mhz).
But, after unisntalling them, I noticed the same "flat line" at night and also achieved over 30 hours of battery life.
My question is... do these apps really make a difference on our phones?
Or, are the phones advanced enough to handle everything just fine?
your thoughts are appreciated.
I agree... I got about 27 hours of life out of my battery without set cpu or JD (i've never liked JD anyway because its like putting my kid on riddlin)
h20wakebum said:
My question is... do these apps really make a difference on our phones?
Or, are the phones advanced enough to handle everything just fine?
your thoughts are appreciated.
Click to expand...
Click to collapse
Which version of JD are you using? If you have the Plus or Ultimate version, you can probably still gain some benefit, but you need to learn how to custom configure the settings so that you use the ones that are still relevant. For example:
Where Not Helpful: JD will turn off your GPS if an application isn't using it, but most of today's phones will do that anyway.
Where Helpful:: In advanced settings, you can provide a 'night schedule', wherein during this time, JD will disable mobile data, and thus polling, so your phone will not go out and check for mail, FB messages, Tweets, etc. Otherwise, mobile data is off unless you 'wake' the screen for some reason. Or another feature that 'trains' your wi-fi to only activate when you are at home or a 'recognized' wi-fi spot. These are a couple examples, there are others.
Where it MAY be Helpful: JD can disable mobile data for a custom # of minutes (10/15/30/60) and prevent background sync during those periods. It will awake, allow the sync, then turn mobile data off. Now some apps may only sync in these intervals anyway, but unless they're all syncing at the same time, you could have lots of 'up' time. Some of this may not 'wake' your phone from Deep Sleep, but depending on how sloppy the code is, it might.
Hope this helps.
h20wakebum said:
Hello,
Title says it all...
I would notice overnight that my battery would be completely horizontal (no drop) and thought it was the combination of SETCPU and JuiceDefender (night profile + screen off drop mhz).
But, after unisntalling them, I noticed the same "flat line" at night and also achieved over 30 hours of battery life.
My question is... do these apps really make a difference on our phones?
Or, are the phones advanced enough to handle everything just fine?
your thoughts are appreciated.
Click to expand...
Click to collapse
I think really depends on the ROM you are running. ViperROM has a script that changes the CPU speed and governer on the fly. So no need for SetCPU there. I'd say Juice Defender can still come in handy with turning data off when you aren't using it.
My 2 cents. Your results may vary.
Capp5050 said:
Which version of JD are you using? If you have the Plus or Ultimate version, you can probably still gain some benefit, but you need to learn how to custom configure the settings so that you use the ones that are still relevant. For example:
Where Not Helpful: JD will turn off your GPS if an application isn't using it, but most of today's phones will do that anyway.
Where Helpful:: In advanced settings, you can provide a 'night schedule', wherein during this time, JD will disable mobile data, and thus polling, so your phone will not go out and check for mail, FB messages, Tweets, etc. Otherwise, mobile data is off unless you 'wake' the screen for some reason. Or another feature that 'trains' your wi-fi to only activate when you are at home or a 'recognized' wi-fi spot. These are a couple examples, there are others.
Where it MAY be Helpful: JD can disable mobile data for a custom # of minutes (10/15/30/60) and prevent background sync during those periods. It will awake, allow the sync, then turn mobile data off. Now some apps may only sync in these intervals anyway, but unless they're all syncing at the same time, you could have lots of 'up' time. Some of this may not 'wake' your phone from Deep Sleep, but depending on how sloppy the code is, it might.
Hope this helps.
Click to expand...
Click to collapse
I use ultimate. I did run a night schedule, but that kind of points back to my original observation... I'd have night setup from 11pm - 7am and see a horizontal line for battery during this time (wow JD is really working)... BUT, with it uninstalled, during the same period of time 11pm - 7am my battery was also horizontal line... So did it really do anything? I'm on wifi at my house so when I'm sleeping the phone is wifi and not constantly pinging the mobile network (does that make a diff. being on wifi)?
I also did like the wifi only when home setting.
With ViperRom, I probably don't need set CPU anymore... Maybe i'll throw JD back on.
One question.. were you running the beta JD? I noticed the beta would always throw errors in the log stating i needed to uninstall, reboot, reinstall (I never did) anyone else have that happen?
These numbers sound like you have the radio off and don't turn your display on. Pretty amazing numbers otherwise. Would love to know the rom + kernal you're using
edit: I see the post above you mention viperrom. Typically if you have data turned off and display off any device will last days. My OG evo lasts for around 48 hours just sitting there. Still really impressive if you're using your phone within that 30 hours
h20wakebum said:
One question.. were you running the beta JD? I noticed the beta would always throw errors in the log stating i needed to uninstall, reboot, reinstall (I never did) anyone else have that happen?
Click to expand...
Click to collapse
I've never tried the beta; I started with standard, upgraded to Premium, then eventually upgraded to Ultimate (I use the 'Customize' setting, but rarely the 'Advanced' config).
I hear ya on the night-time wi-fi thing. But with this particular phone (and before I rooted and changed ROM/Kernel), on some nights I would be connected to wi-fi and get ZERO CPU sleep time, other nights it would sleep - I have no idea why. It is conceivable that if the only polling your doing is e.g., Gmail, that either it doesn't happen at night, or it happens in such a way as to not knock the phone out of sleep (it IS Google's OS after all).
On a related note, I'm using K-9 mail (my primary mail is Yahoo); it throws wake-locks all the time (set to poll every 15 minutes), but they don't seem to impact battery life or take the device out of deep sleep which is why I suggested that case above.
One other item I like about JD is the ability to permission each and every app for wireless/network access; obviously mail, calendar, phone, etc. need it, but some apps simply don't, and I've been surprised when I set it to 'notify' and some random game pops up seeking network access. Looking for an update? who knows, but I lock 'em down anyway.
AC
pandamaja said:
These numbers sound like you have the radio off and don't turn your display on. Pretty amazing numbers otherwise. Would love to know the rom + kernal you're using
edit: I see the post above you mention viperrom. Typically if you have data turned off and display off any device will last days. My OG evo lasts for around 48 hours just sitting there. Still really impressive if you're using your phone within that 30 hours
Click to expand...
Click to collapse
I do not turn off data/radio (no airplane mode).
I'm running ViperRom 2.2 with the latest loskernal experimental.
My display was on for roughly 2 hours (again, just used it as i happened to during the course of the day) and data was on.
Capp5050 said:
I've never tried the beta; I started with standard, upgraded to Premium, then eventually upgraded to Ultimate (I use the 'Customize' setting, but rarely the 'Advanced' config).
I hear ya on the night-time wi-fi thing. But with this particular phone (and before I rooted and changed ROM/Kernel), on some nights I would be connected to wi-fi and get ZERO CPU sleep time, other nights it would sleep - I have no idea why. It is conceivable that if the only polling your doing is e.g., Gmail, that either it doesn't happen at night, or it happens in such a way as to not knock the phone out of sleep (it IS Google's OS after all).
On a related note, I'm using K-9 mail (my primary mail is Yahoo); it throws wake-locks all the time (set to poll every 15 minutes), but they don't seem to impact battery life or take the device out of deep sleep which is why I suggested that case above.
One other item I like about JD is the ability to permission each and every app for wireless/network access; obviously mail, calendar, phone, etc. need it, but some apps simply don't, and I've been surprised when I set it to 'notify' and some random game pops up seeking network access. Looking for an update? who knows, but I lock 'em down anyway.
AC
Click to expand...
Click to collapse
Interesting thing is with the latest JD build it has the bluetooth settings, so i can leave my headset paired, but the phone disconnects while not on a call and then when i get a call, it turns on... kinda cool.
In regards to the permissions... do i need to give the email applications permission for enable/screen off? (so that I'll still get the notifs?) or just enable (as in when screen on).
thanks,
RR
So I've been trying to get more life out of my battery, I get decent now, but not the 18+ hours I've seen other people getting. I think the main problem here is, if I go view the Applications -> Battery Usage screen, the "Wi-Fi" and "Awake" bars are always full blue, even when the phone hasn't been touched in a couple hours.
Does anyone know what actually causes these to now sleep? Is it push email? Or some other setting I'm missing?
Thanks
RubenRybnik said:
So I've been trying to get more life out of my battery, I get decent now, but not the 18+ hours I've seen other people getting. I think the main problem here is, if I go view the Applications -> Battery Usage screen, the "Wi-Fi" and "Awake" bars are always full blue, even when the phone hasn't been touched in a couple hours.
Does anyone know what actually causes these to now sleep? Is it push email? Or some other setting I'm missing?
Thanks
Click to expand...
Click to collapse
Look and find out you can start by turning off wifi if not using it post your screen shots of battery use someone may help
Sent from my SPH-D710 using xda premium
RubenRybnik said:
So I've been trying to get more life out of my battery, I get decent now, but not the 18+ hours I've seen other people getting. I think the main problem here is, if I go view the Applications -> Battery Usage screen, the "Wi-Fi" and "Awake" bars are always full blue, even when the phone hasn't been touched in a couple hours.
Does anyone know what actually causes these to now sleep? Is it push email? Or some other setting I'm missing?
Thanks
Click to expand...
Click to collapse
Try Menu/Settings/Wireless and Network/Wi-Fi Settings. Then press Menu/Advanced/Wi-Fi- sleep policy.
Play with those settings. You are probably set to "Never". Folks have actually been reporting better battery life with this setting (powering on and shutting down the wifi eats up battery) You can play around with it to get your own results.
Hit thanks if this helps!
pojieps said:
Try Menu/Settings/Wireless and Network/Wi-Fi Settings. Then press Menu/Advanced/Wi-Fi- sleep policy.
Play with those settings. You are probably set to "Never". Folks have actually been reporting better battery life with this setting (powering on and shutting down the wifi eats up battery) You can play around with it to get your own results.
Hit thanks if this helps!
Click to expand...
Click to collapse
Ah...yes, it is set to never. So leaving it on "never" gets better results, say if you're at home and always have a wifi connection? Also, if the wi-fi is on, does that mean the device can't sleep I take it, that's what's keeping the device awake with screen off?
Thanks for the tip.
RubenRybnik said:
Ah...yes, it is set to never. So leaving it on "never" gets better results, say if you're at home and always have a wifi connection? Also, if the wi-fi is on, does that mean the device can't sleep I take it, that's what's keeping the device awake with screen off?
Thanks for the tip.
Click to expand...
Click to collapse
I've heard both sides to this argument, and frankly I don't think most people understand why changing it does, or in other cases does not help.
I suspect that the answer to your issue isn't going to be found here. Here's the theory:
- Setting wifi policy to "Sleep - Never" results in better battery life for some; it's likely because these individuals have a fairly low 3g signal, which tends to draw more battery when periodic updates/synchronization occurs (e.g., gmail, calendar, facebook, etc.). By leaving wifi Sleep set to never, the wifi (which THEORETICALLY uses less power than 3g) can do the work instead.
- Setting wifi policy to "Sleep - When Screen is Off" can result in better battery life for a number of reasons, many of the underlying issues being hard to identify. For example, if your router tends to send a lot of 'noise' and wake up your phone, having wi-fi disabled will prevent this. Location services in the OS - which you've probably permitted to 'help locate you faster' - even when you are NOT connected to a wifi network - will periodically ping wireless networks around you to help facilitate faster geolocation. This uses battery as well.
But don't confuse the generalities that have spawned from people's anecdotal situations with what could be a very different problem.
Was your phone primarily located in one location during most of the 'awake' period? If so, then it was probably connected to the same router most of that time. If so, it really shouldn't matter what the setting was for Advanced Wifi - the phone should still sleep.
If you turn off wi-fi on the device, and the device then sleeps, then you've narrowed the issue some, but that is not a solution, because what are you going to do, not use wifi?
You've got to dig deeper; your issue may be any of the following - rogue app that keeps a wakelock, rogue app that updates too frequently, wifi modem issue, router issue, OS issue, etc.
In short, you need to figure out what's keeping the phone awake. Get CPU Spy and Better Battery Stats to help you get insight into what's keeping the device awake.
Capp5050 said:
I've heard both sides to this argument, and frankly I don't think most people understand why changing it does, or in other cases does not help.
I suspect that the answer to your issue isn't going to be found here. Here's the theory:
- Setting wifi policy to "Sleep - Never" results in better battery life for some; it's likely because these individuals have a fairly low 3g signal, which tends to draw more battery when periodic updates/synchronization occurs (e.g., gmail, calendar, facebook, etc.). By leaving wifi Sleep set to never, the wifi (which THEORETICALLY uses less power than 3g) can do the work instead.
- Setting wifi policy to "Sleep - When Screen is Off" can result in better battery life for a number of reasons, many of the underlying issues being hard to identify. For example, if your router tends to send a lot of 'noise' and wake up your phone, having wi-fi disabled will prevent this. Location services in the OS - which you've probably permitted to 'help locate you faster' - even when you are NOT connected to a wifi network - will periodically ping wireless networks around you to help facilitate faster geolocation. This uses battery as well.
But don't confuse the generalities that have spawned from people's anecdotal situations with what could be a very different problem.
Was your phone primarily located in one location during most of the 'awake' period? If so, then it was probably connected to the same router most of that time. If so, it really shouldn't matter what the setting was for Advanced Wifi - the phone should still sleep.
If you turn off wi-fi on the device, and the device then sleeps, then you've narrowed the issue some, but that is not a solution, because what are you going to do, not use wifi?
You've got to dig deeper; your issue may be any of the following - rogue app that keeps a wakelock, rogue app that updates too frequently, wifi modem issue, router issue, OS issue, etc.
In short, you need to figure out what's keeping the phone awake. Get CPU Spy and Better Battery Stats to help you get insight into what's keeping the device awake.
Click to expand...
Click to collapse
Thank you for that very informative post. My phone was on my desk all day today( worked from home ) and wi-fi is set to always on, and it never slept, not even once.
I'll try disabling wi-fi( should have done this earlier to be honest and checked ) and then I'll download those apps, I just got Badass Battery Monitor, I'll check out the two you recommended as well. Thanks for the info!
Your phone should still go into deep sleep with wifi on. If it doesn't then you have something else wakelocking your phone. However, if wifi is set to never sleep, and wifi is enabled, the bar on the battery chart will always be solid blue.
So just installed CPU Spy, it looks like IM+ is the biggest user of wakelocks. I like to always be signed in to my accounts, but not at such a huge cost of battery, does anyone know of a better multi IM client that will push updates to you? I used to have IM+ on the iPhone( yea I know, just switched two months ago, and never looking back ) and the push on it worked great. The 'push' IM+ says it has is awful, most of the time I never get my IMs sent to me at all.
Also have skype signed on all the time, not sure if that is wakelock'ing anything, I'll have to keep an eye on it, it didn't show up on CPU Spy.
Try IMO, free from the Android Market. Its a multi-IM client that combines most common clients including Skype. I've used it. It creates some wakelocks, but not sufficient to wake the phone. I don't use IM very often so I'd be curious to hear how it works for you.
Capp5050 said:
Try IMO, free from the Android Market. Its a multi-IM client that combines most common clients including Skype. I've used it. It creates some wakelocks, but not sufficient to wake the phone. I don't use IM very often so I'd be curious to hear how it works for you.
Click to expand...
Click to collapse
Thanks ... Giving it a try today, I'll let you know how it goes.
Capp5050 said:
Try IMO, free from the Android Market. Its a multi-IM client that combines most common clients including Skype. I've used it. It creates some wakelocks, but not sufficient to wake the phone. I don't use IM very often so I'd be curious to hear how it works for you.
Click to expand...
Click to collapse
So been trying IMO the past couple days. Seems much better than IM+. Haven't seen any disconnects, I get my IMs about 30sec - 1min after the computer gets them, which is fine, and the wake-locking is extremely minimal. IM+ was awful with the wake-locking.
So that clears up the Always awake issue, flashed Blazer 3.8 last night, so can't comment on battery too much yet, also calibrating today.
RubenRybnik said:
So been trying IMO the past couple days. Seems much better than IM+. Haven't seen any disconnects, I get my IMs about 30sec - 1min after the computer gets them, which is fine, and the wake-locking is extremely minimal. IM+ was awful with the wake-locking.
So that clears up the Always awake issue, flashed Blazer 3.8 last night, so can't comment on battery too much yet, also calibrating today.
Click to expand...
Click to collapse
Thanks for the feedback, glad to hear it helped, and I now feel a little more confident leaving my IM 'on' more often.
So i installed Juice Defender and immediately noticed a sizable boost in Battery life... BUT... my Data connection was more flaky then it was at stock
So one day when it is critcal mass I uninstall it real quick so I can have the data connection I needed so badly at that moment. Well... after that the battery performance has been MUCH worse than it ever was before.
Anybody deal with this yet? Anybody know how to set the program not to mess with the data... or how to....????
My rooted GNEX config is in the sig.
I found that is messed up my data connection too but that's the most part if how it works to save your battery by switching to 2g when screen off and 3g while screen on. At least that's how its meant to be. I uninstalled it as 3g would rarely come back on.
Look into other settings to save your battery like screen brightness, auto snyc, GPS, wifi (if your not in a place with it), lock sounds, key press sounds, vibrate on touch, vibrate on key press in keyboard. There's loads of things lime that which really help.
Maybe also look into certain apps being high memory usage in settings menu and look into how many apps you got installed.
Sent from my Galaxy Nexus using Tapatalk
This may not be of much help, but I used it for a long time with my tbolt and never had an issue, but no matter what I did with the bionic it would almost never regain data with screen on. So I think it *might* have something to do with the actual hardware. Don't quote me, just my two cents. However, after uninstalling on the bionic I didn't have anymore issues with data than I had before installing.
Oh, and I forgot to mention that juice defender saves battery by killing the data connection. It doesn't save battery any other way.
Same deal here. I just set the app to not mess with Mobile Data by clicking the customize button under profile and going into the new Settings tab that shows up then disabling the Mobile Data option. Still testing...
2x battery
I had trouble with juice defender also so I changed to using 2x battery and I have had much better results.
Toggle the 4G by swiping down and unselecting 4G, wait 10 seconds, then toggle 4G back on. It will come back, everytime for me.
ever since Gingerbread came out, JuiceDefender is not recommended for android OS
Pretty much the only major thing Juice Defender can do to "help" battery drain is turn off your network (or toggle it to 2G only on GSM phones, 3G only on LTE phones) when the screen is off.
It generally wastes more battery frequently toggling it on/off when the screen changes state than it saves by doing so. Not to mention that you can't get background alerts etc. when Juice Defender is toggling your data around.
The only time it ever really saves you anything is if you're not turning your screen on for long periods of time, in that case you could simply manually toggle off your data if you know that will be the case. Juice Defender runs as a process in the bakcground constantly, which effects your battery negatively also.
martonikaj said:
Pretty much the only major thing Juice Defender can do to "help" battery drain is turn off your network (or toggle it to 2G only on GSM phones, 3G only on LTE phones) when the screen is off.
It generally wastes more battery frequently toggling it on/off when the screen changes state than it saves by doing so. Not to mention that you can't get background alerts etc. when Juice Defender is toggling your data around.
The only time it ever really saves you anything is if you're not turning your screen on for long periods of time, in that case you could simply manually toggle off your data if you know that will be the case. Juice Defender runs as a process in the background constantly, which effects your battery negatively also.
Click to expand...
Click to collapse
pretty much what he said. I used JD Ultimate for a month before I gave up on it. I don't notice any decrease in battery life since I did so. Betterbatterystats showed an awfully high number of wakelocks when JD was active. The wifi "Location" feature was nice though.
Like previous posters have said, the problem with JD is that when it toggles you data, it will force your phone into an awake state which drains a bit of battery. I'd like to add that, from personal experience, if you usually have JD toggle your data on more frequently than at 20-30 minute intervals, you might as well turn off JD. The battery saved from turning your data off and the battery wasted putting your phone on an awake state isn't worth it. On the other hand, if you toggle your data less frequently than every 30 minutes, the benefit exceeds the cost and JD actually helps you save battery.
Since I need my data more often than that I have turned off the data connection management. I still leave JD on for the location-based Wi-Fi management though. That's actually useful and saves me having to worry about turning on my Wi-Fi when I get home/to college.
Sent from my Transformer Prime TF201 using Tapatalk
I'm never a fan of any so-called battery saving app.
All they do is turn off your data or turn down the brightness.
MilkPudding said:
I'm never a fan of any so-called battery saving app.
All they do is turn off your data or turn down the brightness.
Click to expand...
Click to collapse
+1
I'm a fan of Back button long-press kills app. Then i just check for bg processes of said app and kill them as well.
If i have apps that need background sync, i always make sure either to leave wifi or data on (i know it won't need much, a few KBs maybe) so that apps will have connectivity when they need it, or, if available, sign out of the app (examples: gtalk, latitude). It will cost me more battery if the app keeps trying to find network connectivity and not having it, than the drain of wifi on or data call active.
martonikaj said:
Pretty much the only major thing Juice Defender can do to "help" battery drain is turn off your network (or toggle it to 2G only on GSM phones, 3G only on LTE phones) when the screen is off.
It generally wastes more battery frequently toggling it on/off when the screen changes state than it saves by doing so. Not to mention that you can't get background alerts etc. when Juice Defender is toggling your data around.
The only time it ever really saves you anything is if you're not turning your screen on for long periods of time, in that case you could simply manually toggle off your data if you know that will be the case. Juice Defender runs as a process in the bakcground constantly, which effects your battery negatively also.
Click to expand...
Click to collapse
That explains why I have missed Kik and FB alerts all week! Cheers
#uninstalled
Sent from my Galaxy Nexus using xda premium
Chrono_Tata said:
Like previous posters have said, the problem with JD is that when it toggles you data, it will force your phone into an awake state which drains a bit of battery. I'd like to add that, from personal experience, if you usually have JD toggle your data on more frequently than at 20-30 minute intervals, you might as well turn off JD. The battery saved from turning your data off and the battery wasted putting your phone on an awake state isn't worth it. On the other hand, if you toggle your data less frequently than every 30 minutes, the benefit exceeds the cost and JD actually helps you save battery.
Since I need my data more often than that I have turned off the data connection management. I still leave JD on for the location-based Wi-Fi management though. That's actually useful and saves me having to worry about turning on my Wi-Fi when I get home/to college.
Sent from my Transformer Prime TF201 using Tapatalk
Click to expand...
Click to collapse
I disagree. When I used it on my tbolt went from a drain of 40-60 mAh to 20-25 mAh using battery monitor widget polling at 60 sec intervals. And I never missed anything. But I used jd ultimate that allowed data when apps requested it. I also typically got 6 extra hours of use, which meant I could make it though an entire work shift vs. having to recharge after lunch. The only reason I'm not currently using it is because of issue with the bionic data not restarting. That's the reason I think it's an issue with hardware compatibility. Because even if I let the stock Android manage the data connection I still have issues with data restarting on the bionic.
Juice defender did really extend my battery but I found the only part I really used was the WiFi location feature. I started using WiFi unlock at home and got [email protected] to turn off WiFi when I'm away from home then turn it back on when I get home. Yes, I'm that lazy/forgetful.
JuiceDefender was great on Gingerbread and Froyo, but I've noticed that it just seemed to hurt more than help on Honeycomb and ICS. My battery life on my GNex, in my use case, went up when I uninstalled it, as did the data drops I'd been having.
I suspect that as stock power consumption continues to drop with new OSes, JuiceDefender is going to be viewed as a relic of a bygone era.
I will have to say that it has helped my battery but in my work environment I lose signal while my phone is in my pocket plus I can't check my phone for two hrs or more. So I would say in my case it has helped since I would forget to turn data off. I also changed my settings to toggle data every 30 min instead of the default of 15.
Sent from my Galaxy Nexus using xda premium
1454 said:
I disagree. When I used it on my tbolt went from a drain of 40-60 mAh to 20-25 mAh using battery monitor widget polling at 60 sec intervals. And I never missed anything. But I used jd ultimate that allowed data when apps requested it. I also typically got 6 extra hours of use, which meant I could make it though an entire work shift vs. having to recharge after lunch. The only reason I'm not currently using it is because of issue with the bionic data not restarting. That's the reason I think it's an issue with hardware compatibility. Because even if I let the stock Android manage the data connection I still have issues with data restarting on the bionic.
Click to expand...
Click to collapse
I was talking about JD's performance on ICS; on the Galaxy Nexus specifically. JD was great on my old Gingerbread and Froyo phones but with ICS it seems to be obsolete (under the conditions I described in my previous post at least). I don't know if it's just how ICS works or if it's because JD hasn't been optimised properly for ICS but that's how it is right now.
Sent from my Galaxy Nexus using Tapatalk
I bought JD Ultimate, and eventually had to uninstall it after I found it was causing too many glitches in ICS. I wasted 4.99, but live and learn I guess.
This thread that I've revamped from my Evo 4G/3D days, hoping to share some of the love with newer users. Over the time I've been on android, I've learned a few simple things that can greatly assist in the battery life of our wonderful smartphones.
If you get anything out of the thread, please don't hesitate to rate it and drop me a thanks!
If you read the thread and like the tips, have a new one to suggest, or have a revision, please post it.
On a similar note, moderators, thanks for the sticky!
General Lithium Ion Battery Information
^^This link includes stuff about charging, including trickle charging aka SBC (Why NOT to use it, or at your own peril)
My tips for good battery life:
Tips for Non-Rooted users
1. Turn off all radios when not in use.
(Bluetooth, wifi, data, 4G/Wimax/LTE, NFC, etc) Use a widget like the default power widgets, Switchpro, or a similar app from the market. Newer android versions generally allows users to access these radios and other settings from the notification pulldown menu, , under the "Quick Settings" tab or a row at the top of the pulldown. The radios of the phone draw power if on even if the user isn't actually utilizing the radio's functions. A radio searching for signal (if you are in a low-signal area) drains more than a radio with good signal, so again, turn 'em off when you aren't using 'em.
To manually turn off radios without a toggle, go to menu>settings>wireless & networks.
Wifi uses less battery than 3G, so use wifi when you can.
Unlike the others, GPS radios only draw power when you actually need them, so you can leave it on all the time.
2. Juice Defender is one of my favorite apps. Basically it controls your data for you to maximize life.
More explanations are on their page, search it on the market for free, or upgrade for more features.
Here are my settings for it: Click me
Note that for me at least, juice defender likes to deny apps data privileges whether you allow them or not, so screen on = data on works best for me.
3. I love live wallpapers, and I’ve always been a fan of pixel zombies, but they are really only good for showing off due to their battery drain.
4. Sadly, the "always on mobile data" setting is gone. This tip is invalid.
Go to menu>settings>wireless & networks>mobile networks>disable always on mobile data.
Product F(RED) said:
To clarify, "Always On Mobile Data", when turned off, lets the 3G modem go to sleep after the screen has been off for 5 minutes. It doesn't interfere with anything like email or any other application that requires an internet connection at that moment because it turns on on-demand rather than being on all the time and wasting battery.
Click to expand...
Click to collapse
5. Set your screen timeout to something that fits you.
The screen is the highest drain of battery power on any smartphone. BY setting the timeout, you can prevent your phone from staying on when you don’t manually turn off the screen. Also, manually turn off your screen when you’re done with your phone.
Menu>Settings>Display>Screen Timeout
I use 30 seconds.
6. Task killers used to be the shiz, but no longer.
Here is the ultimate, in depth, graphically assisted, explanation by the famous Fresh ROM's chef, Flipz. Shortly, in light of recent testing, really don’t do anything but force apps that the android OS needed to be open, and thus didn’t close, to re-open. So try not using them, unless for stuff like trying to figure out why your phone isn’t sleeping with system panel. You really won’t notice a performance difference, and the adverse effects you aren’t seeing will stop
+=+ A good alternative is the application SystemPanel Pro. It has a free version, but I highly reccomend purchasing the paid app. It basically monitors everything going on with your phone's usage both in real time an in terms of usage history. If your battery is draiging fast, it tells you what app was doing it, how much it was doing it, and allows you to stop it.
7. I'm sure you have all heard around that your phone isn't "sleeping".
This is referring to the phone's "awake" time, hence the name. When you go to Menu>Settings>About Phone>Battery>click on the small battery graphical, you can compare the two lines, time on and awake. Generally, up time refers to the amount of time since the last reboot. The "awake time" is how long the screen has been active. The problem is, a lot of the time, due to the endless possibilities of inconsistencies between apps/ROMs/kernels/phones, the phone will not go to "sleep", drawing power proportionate to the screen being in use when it reality the phone is sitting idle.
If you compare these numbers, and they are the same, or if you note the difference, turn off the screen for a minute, then re-check and they are the same, then your phone is not sleeping.
One solution is to reboot.
I recommend two apps to help monitor:System Panel and Better Battery Stats. These two apps (explained in their FAQ's and descriptions greatly aid in finding those rogues.
Usually, SystemPanel will show an app that has gone "rogue" and is keeping your phone awake.
-This is done by hitting menu>settings>monitoring enabled. Then after some time has passed, ht menu>monitoring>history>change tab to top apps, and see if anything is above, say, 2-4%.
Uninstall applications/reinstalling them slowly, checking after every install to see what is causing it is one tedious but surefire solution.
Lastly,
Follow these steps that I have discovered almost always work.
1. Reboot phone.
2. Instantly upon reboot, as soon as you gain control, open up some type of monitor/taskkiller
3. "kill all" tasks on startup; about 5 times in quick succession should do the trick.
4. Turn off the screen and leave it for about five minutes.
5. Check the up time v. awake time and see if they are the same.
6. If they are, repeat steps 1-5. If they are different, you are good.
8. Apps and Combinations to watch out for!
-Facebook- Tries to sync live feed all the time, HIGHLY recommend unchecking this box, as it creates a massive draw on data
-Skype- This app reportedly (I've seen it myself) likes to sync random data and open up the network for fun. Sign out of app when not in use to fix
A rogue process called "gsiff_daemon", associated with the gyroscope. Changing its name seems to be the only semi-permanent solution. It's located in system/bin.
Lightflow is a pretty damn cool notification/led manager, but it eats up ridiculous system resources using its alarm wakeups. Use at your own risk.
9. Manage your syncing.
This is a big one, and it differs from person to person. Go to Menu>Settings>Accounts and Sync, and take a look at what's going on there. The green or checked or activated box to the right of the option means that there is an account syncing data. I for example have four email addresses, facebook, dropbox, box, weather, etc. That is bad. You should go through and turn off syncing for nasty apps you didn't even know where accessing the internet, or limit the access of apps and services that you do want to allow.
The problem lies in the way this syncing is handled. Each app/service runs on its own schedule, making it particularly likely that your phone could almost always be establishing a data connection and trying to download data for your various apps. See step 2 regarding the app Juice Defender to handle this problem.
10. Vibrate Settings
Vibration and haptic feedback eat up a surprising amount of battery. If you have the haptic feedback enabled, then every time you press anything your phone puts out some juice to make itself dance.
At least on the GSIII, the settings are in menu>settings>sound
Some apps have their own haptic feedback settings, and notifications are their own set entirely.
Root Tips LIVE
Tips for Rooted users:
1. Try out custom kernels.
By going to the Galaxy S III Android Development section of the forums, you can see all of the different kernels being developed. These allow for all kinds of modifications like underclocking the CPU and undervolting, both of which save battery. To see how to use them, read the FAQ's in each thread's OPs.
Here is a great guide to custom kernel's by mroneeyedboh.
2. Use SetCPU in compliance with whatever your custom kernel allows.
This site will explain the basics of SetCPU: http://www.setcpu.com/
-Profiles from SetCPU should usually involve these for battery life optimization:
-Screen off at the minimum clock speed for both, with the max raised on level if sluggishness is apparent
-A temperature greater than “X”
-General power related profiles that lower cpu speed at lower battery levels
-Here are my SetCPU profiles: 1 , 2 , 3
-My profiles change a lot as time goes by, because different kernel creators recommend different settings. I suggest reading up on whatever kernel you are using to gather settings.
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NOTES:
*Some apps or processes begin to run at startup and keep the phone awake. These apps are not detected by things like spare parts or system panel, unless sometimes represented in the "system" process, in which case its usage will be unusually high.
This shouldn't take more than three repeats, and if it does, you need to factory reset, and slowly add apps back to see what's causing the problem.
___--- When it comes to actually "calibrating" one's battery, there are a couple of methods floating around. The method I first learned is to charge the phone all the way, boot into recovery immediately, and "wipe battery stats". Then reboot quickly, and run your phone all the way to death without charging it, then charge it all the way without interrupting it, and you should be good to go. Do this when changing ROMs/kernels for best results.
----When it comes to people claiming 20 plus hours of moderate/heavy use out of their current setup or other ridiculous absurdities, consider my position: No matter what you do, the Evo battery is the Evo battery. You can tweak it and customize it with kernels, ROMs, and settings, but none of that will turn it into a car battery. The main problem (besides a false sense of pride) that leads to these reports is the misunderstanding of what the usage levels are, so here’s my best summary:
* *Light usage – Phone screen actually on for maybe 0-2 hours. Things like a few texts, some emails, 20 minutes web browsing, etc.
* *Moderate usage – You watched a few youtube videos or similar apps, sustained web browsing, hundreds of texts, some games. Hours range from about 2-5 of screen on
* *Heavy usage – LOTS of video watching and games, 3D pics or video, or some high def gaming/movie watching for at least an hour to an hour and a half in total, with lots of emails and texts, browsing, and other app shenanigans. 5+ hours
*I’m sure everyone doesn’t agree with all these numbers, but this is most likely a good average of what powerusers think. All specific hourage may vary due to differences in phones, batteries, ROMs, and kernels… Which also means that most battery comparisons are pointless; it’s only what you can improve on that counts!
I’ll update this whenever I see good stuff, people remind me, or I remember/come across things I do.
Hope it helps everybody!
Hit the "THANKS" button if I help you!
Vote for Your Favorite Tip
Nice tips
I'm not quite sure if leaving the GPS on actually eats up battery now. I've seen articles now that state that GPS is only used if a program needs it. When I go into battery and usage, GPS will only show it has been used only a couple times with the apps that I opened such as Facebook, Speed Test or Gas Buddy. I think with ICS, it has changed in the way that GPS actually works and it is not actually constantly using battery.
jhuff83 said:
I'm not quite sure if leaving the GPS on actually eats up battery now. I've seen articles now that state that GPS is only used if a program needs it. When I go into battery and usage, GPS will only show it has been used only a couple times with the apps that I opened such as Facebook, Speed Test or Gas Buddy. I think with ICS, it has changed in the way that GPS actually works and it is not actually constantly using battery.
Click to expand...
Click to collapse
This is correct and I have confirmed it. Just haven't updated the op.
Thanks for calling that to my attention.
The one about turning radios off is one that makes all the sense in the world, but I'm not sure in practice if it makes a significant enough difference to override the inconvenience of having to flip things on and off as needed.
I can only speak from personal experience but for about two weeks my wife and I, both with S3's, were shutting radios off when not needed out of habit from our Epic days. However, since then (well over a month now) we just leave everything on all the time... and I do mean *everything*: GPS, Wi-Fi, NFC, cell radio, BT... and the difference has been... wait for it... so little it's actually been hard to quantify!
My own take on that rule is to leave everything on and see what you see... it's always easy enough to turn things off if you find your battery life not living up to expectations and if it winds up being a trend, so be it, leave things off as suggested in the OP. For my wife and I at least we can get through an average day and finish up before going to bed around 30%-40% battery most days. To me, even if I could get that to 40%-50% left, that 10% difference I can accept for never having to worry about what's on or off.
Laziness has a price, and it's around 10% of my battery life apparently
great tips!!!! definitely improved my battery with these!
The radios are extremely dependent upon your area, signal strength, the walls of your house, the apps you have installed that actually call upon the data... So ideally, if your area has amazing signal, your walls are hyper radio permeable, and you don't have many data intensive apps, then you can probably get by with minimal loss. People who are feeling the itch to test should certainly go ahead and try, but the same could be said with most of these tips. This is simply a guide of suggestions. YMMV
fzammetti said:
The one about turning radios off is one that makes all the sense in the world, but I'm not sure in practice if it makes a significant enough difference to override the inconvenience of having to flip things on and off as needed.
I can only speak from personal experience but for about two weeks my wife and I, both with S3's, were shutting radios off when not needed out of habit from our Epic days. However, since then (well over a month now) we just leave everything on all the time... and I do mean *everything*: GPS, Wi-Fi, NFC, cell radio, BT... and the difference has been... wait for it... so little it's actually been hard to quantify!
My own take on that rule is to leave everything on and see what you see... it's always easy enough to turn things off if you find your battery life not living up to expectations and if it winds up being a trend, so be it, leave things off as suggested in the OP. For my wife and I at least we can get through an average day and finish up before going to bed around 30%-40% battery most days. To me, even if I could get that to 40%-50% left, that 10% difference I can accept for never having to worry about what's on or off.
Laziness has a price, and it's around 10% of my battery life apparently
Click to expand...
Click to collapse
Gps Radio?
Really? The radio, even if left on, uses power only when an app needs the position. I am kinda boggled by this? Wouldn't it take longer to aquire the location from the 3-7 sateilites upon the request and then shut back down. What would be the diference? This can't be true about the GPS not sucking any power in ICS when idle.
BUMP
551skydiver said:
Really? The radio, even if left on, uses power only when an app needs the position. I am kinda boggled by this? Wouldn't it take longer to aquire the location from the 3-7 sateilites upon the request and then shut back down. What would be the diference? This can't be true about the GPS not sucking any power in ICS when idle.
BUMP
Click to expand...
Click to collapse
Try leaving it on for the day and go into battery and click on the graph. You will see that it should be black across the board for GPS if the signal was not used. Only time it would be green is when a program utilized it.
ICS changed the Battery Stats. It doesn't display that information in About Device. Uptime is there but awake time isn't.
sekigah84 said:
ICS changed the Battery Stats. It doesn't display that information in About Device. Uptime is there but awake time isn't.
Click to expand...
Click to collapse
Actually, that's incorrect. Menu>Settings>Battery>click on the small graph picture. It gives you many things, including time on battery, Awake time, Screen on time, and charging time. It's just graphically represented.
How do you accomplish #4?
Go to menu>settings>wireless & networks>mobile networks>disable always on mobile data.
---------- Post added at 08:09 AM ---------- Previous post was at 08:06 AM ----------
found it under Data Usage
---------- Post added at 08:24 AM ---------- Previous post was at 08:09 AM ----------
well, when I turned Mobile Data Off, didn't receive any data (emails, etc.) so I turned it back on
I'm curiouis about this 1 as well. How do we accomplish this as I don't see that option?
Remove that "wipe battery stats" from your tips. its a old myth that needs to die permanently.
Shoulon said:
Remove that "wipe battery stats" from your tips. its a old myth that needs to die permanently.
Click to expand...
Click to collapse
You are correct.
www.landofdroid.acom/2012/to-wipe-battery-stats-or-not-to-in-androidthat-is-the-question/
I disable everything when I go to sleep at night, or when I am putting my phone on charge in middle of the day to maybe help it gain battery while not draining it, sort of like a power charge I like to think. It's so easy to do, just slide down status bar, uncheck everything (WiFi, Mobile Data, Sync, dim screen all the way) and that's it. I had 22h1m running since last charge today when I was at 4%.
General Android Battery Tips (Can triple battery life!) | Updated
Thank you for sharing this is to improve life of the battery
battery
shuiguo said:
Thank you for sharing this is to improve life of the battery
Click to expand...
Click to collapse
It helps to use the right ROM and know how to work your phone:
:good:
Also, apparently Google apps backup is broken for some users. I had a problem with the phone not sleeping and traced it to google backup, apparently it's a common problem with ICS. This is unrelated to contacts/calendar sync. If you have the phone device rooted and use titanium you can leave this off, and as long as you don't lose your phone it's no big deal. Setting is under system settings -> backup and reset.
Figure I would show this off here, had the flu last week and was basically comatose for 30 hours. Only about 2 hrs screen on time, but all radios on and even passed out with navigation on after checking traffic at one point. 51 hours
Sent from my SPH-L710 using xda premium
I would try disabling Google backup so it no longer updated/synced my info to the web until I next turned it on, but the option says it deletes all the info already stored on the web. I suppose this is good if someone wanted to delete this info for privacy concerns, but there should be an option to just turn the syncing off, or to schedule it for once a day or something.
I have not tried disabling it as I do not want to wipe my info.