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Today I decided to do a real world test of the Evo's battery life. I used my phone the way I would normally use it on an other day. As for the phone itself, I am running the rom from the OTA update. The only changes that have been made is that I am using unrevoked root method so that I can use the Overclock Widget (marketplace) to turn the processor freq down to 245000 when the screen is off. I also use Advanced Task Killer to turn off apps that I am not using. I had bluetooth and gps turned on throughout the entirety of this test, wifi was on for about 3.5 hours. During this test I played a game for a short period of time, did some light web browsing, and had several phone conversations that totalled a little more than 2 hours. With doing all this, my battery lasted for a little more than 11 hours. That being said, under normal use the Evo should definitely last you throughout a full day.
Thanks for the info. I got my Evo yesterday and haven't been able to put it to through extreme testing yet
No problem. just kind of got tired of hearing how poor the battery life was. Even before using the overclock widget I was still getting decent battery life, but the overclock widget just put it over the top. To add to that, I don't normally talk for 2 hrs. on my phone during a normal day, so really a lot of that 29% battery drain from phone use wouldn't be there. The only thing I didn't use today was 4g (which I don't normally use unless I'm on the phone and need to use data).
Not sure what this proves or "dispells". When people (myself included until making some friendstream changes) are getting 6 hours out of a charge with light use, that is a real problem. You must not have friendstream syncing...if you did and did everything you just wrote about, your phone would be dead in 3 hours tops. Thanks for the info., but once again, people are havnig real issues with the battery...it's not made up.
admorris said:
Not sure what this proves or "dispells". When people (myself included until making some friendstream changes) are getting 6 hours out of a charge with light use, that is a real problem. You must not have friendstream syncing...if you did and did everything you just wrote about, your phone would be dead in 3 hours tops. Thanks for the info., but once again, people are havnig real issues with the battery...it's not made up.
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If you are experiencing poor battery life then it is most likely attributed to not managing your apps properly (friendstream included). For example, without advanced task killer you will get a drastically different amount of battery life than if you have it. Then add to that, the way you configure advanced task killer can add a large amount of battery life compared to having advanced task killer without it being configured properly. Even with friendstream running you should still be able to get a decent amount of battery life (I am aware that it does use more juice), try having your facebook sync less often.
mysterioustko said:
If you are experiencing poor battery life then it is most likely attributed to not managing your apps properly (friendstream included). For example, without advanced task killer you will get a drastically different amount of battery life than if you have it. Then add to that, the way you configure advanced task killer can add a large amount of battery life compared to having advanced task killer without it being configured properly. Even with friendstream running you should still be able to get a decent amount of battery life (I am aware that it does use more juice), try having your facebook sync less often.
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I totally agree I've been using my evo and been fine, I only really have it connected to power when I have it tethering. Besides that it lasts me not all day but while I'm at work (which is the most important part) I get a good 9-10 hours out of it before I really need to charge. It should also be noted that I use locale to switch BT and wifi off when I'm not in an area to take advantage of them.
I think some people have bad batterys/evo's, it's not just a matter of running the right programs or killing tasks
mrono said:
I think some people have bad batterys/evo's, it's not just a matter of running the right programs or killing tasks
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While that is possible I think the majority of the problem rests with the user's mismanagement of apps. I have seen way to many posts from people declaring the battery life to be so horrible, only to make a few changes and then turn around and say how much better it got. If that person had a bad battery then the battery would still have been bad, it wouldn't just start being good. That said, it is very possible that there are people with bad batteries. I just think that most of the people have good batteries and bad phone management.
I did pretty much the same thing. I have the O/C widget to set the frequency to 245000 when the screen is off and also have Advance Task Manager configured to close apps I'm not using. Helps out a lot and I usually get around 12~14 hours on a charge.
mysterioustko said:
If you are experiencing poor battery life then it is most likely attributed to not managing your apps properly (friendstream included). For example, without advanced task killer you will get a drastically different amount of battery life than if you have it. Then add to that, the way you configure advanced task killer can add a large amount of battery life compared to having advanced task killer without it being configured properly. Even with friendstream running you should still be able to get a decent amount of battery life (I am aware that it does use more juice), try having your facebook sync less often.
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Click to collapse
While I completely understand what you are saying, I can't really agree that b/c someone is not getting a full day out of their phone it is b/c of poor app management. While deleting facebook for sense, then reinstalling with only contacts synced fixed everything for me, the fact that you have to go through the phone with a fine tooth comb to get it to run more than 6 hours at a time is pretty silly. While doing that stuff is fine for me and most on this forum, it will undoubtedly turn a lot of non-techie people off from this phone...especially with Sprint doing their new 30 day full refund policy.
It's all good though, just plugged my phone in after 19 hours...playing with it most of the day.
I use advanced task killer and turned off sync for apps I dont use. At 65% used pandora (in 4g for about an hour), browsed several sites, made phone calls, text, emailed. All the normal stuff. Took my phone off the charger 15 hours ago.
Prior to using advanced task killer I would be to about 18% right now. So for those saying that task managers kill more battery power my phone seems to do the exact opposite.
rutter9 said:
I use advanced task killer and turned off sync for apps I dont use. At 65% used pandora (in 4g for about an hour), browsed several sites, made phone calls, text, emailed. All the normal stuff. Took my phone off the charger 15 hours ago.
Prior to using advanced task killer I would be to about 18% right now. So for those saying that task managers kill more battery power my phone seems to do the exact opposite.
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Task killers really only help if you have an app that would normally be giving you higher than usual wake time (the calendar comes to mind). At the start of every boot I always make sure to kill everything so only essential apps and those I use are running. I don't use any kind of auto kill.
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Sent from my HTC EVO 4G using Tapatalk Pro.
It is no longer recommended that a task killer be used. It may result in poor phone performance.
After i rooted with Toasts method, installed OMJ's rom removing all of the sprintware and added the OverClockWidget to tweak the processor, i was able to go a full 32 hours without charging. i had gps and bluetooth on the whole time and wifi on for several hours. i made calls, sent texts, took pictures, basically normal usage.
Just to add to all this. Bad battery isnt just a HTC Evo problem. Go read the forums of almost every android phone released and they all report the same things (in the beginning). Someone that has had a android phone in the past probably hasnt said much about battery. There are so many things you can do to increase battery.
1. manage your apps. Exit them instead of leaving them running (press back button until the app closes, or some apps you can Menu> exit) Pressing home doesnt close the app, it only takes you to the homescreen. Also change the sync times of all your apps/widgets. If you dont use gmail or google calendar, then uncheck the "sync" in Menu>accounts & sync> google. One last thing use a task manager (not recommended by some devs) I use it to end tasks of apps that use data, or ones that i use maybe once a day or once a week, i dont need them cached for quick returning, so i end the task all together. I ignore apps so they dont end that i use very frequently or ones that dont use data or run in the background.
2. Calibrate your battery once like so.. Charge your phone to 100% and then use your phone like normal until its so dead it shuts off by itself. Dont plug it into the computer or wall charger in that time. Then once it shuts off, plug the phone into a wall charger and charge it till its 100% again. After that, plug and play as much as you want.
3. Buy a car charger, usb cord for the comp, and maybe another wall charger. Buy an extra battery or extended battery. Doing the above and adding these to them, youll have a huge increase in battery.
I have an htc hero and i can get well over 12 hours of use by just watching what syncs and what uses data. And i use my phone alot, and wake it up a ton to check for notifications.
I use a friends Evo so im not new to the device and I understand its a different phone.
Stock htc phones come with a lot of stuff preinstalled and widgets. When signing into them with your accounts the sync times are usually pretty high, some like every 15mins. Watch what you are doing with the phone and youll have normal battery life.
i avg 18 -19 hours per charge so im very happy
aaaaah ok now I know who is the idiot Dylan here. Thanks. What a dumbass know-it-all.
I think some people are getting poor battery life because intermittent signal. I know this was the case for me. When I go to a friends house that I barely have signal, the phone constantly tries to find signal or goes into roaming. It would drain the battery fast. When I was in good signal area it seemed to last quite a while. Just saying that it is more than just running apps that cause poor battery.
Also if you will not use the internet turn off the mobile network, put the widget in your screen. You can receive calls but the internet is off.
dwertz said:
I think some people are getting poor battery life because intermittent signal. I know this was the case for me. When I go to a friends house that I barely have signal, the phone constantly tries to find signal or goes into roaming. It would drain the battery fast. When I was in good signal area it seemed to last quite a while. Just saying that it is more than just running apps that cause poor battery.
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You make a very good point. Weak/no signal areas will drain your battery (as with any phone) very quickly due to the phone constantly scanning for signal. Not really much you can due about that other than turning your phone radio off or switching carriers lol. One thing I've read in the Dev forum that may help you is to change your prl to the Alltell/Verizon prl. Some people have reported that this works well in low signal areas.
After I did he market place lag fix I found my battery drained a little more than usual. I downloaded a program called memory task cleaner. This will also allow you to set auto kill on apps you dont want always running n the back ground. simply add as many programs as you dont use or want in the back ground running to the auto kill list. Set the safety level to medium in options in auto kill screen. also set intervals of auto kill to every 2 minutes. auto kill when screen off as well.
There you go. You should notice the phone is back to normal with the battery life as well as if your like me, no need for tee nav or blutooth and things like that you will notice the battery may even last longer.
Let me know your results. Settings so fourth.
By the way there will be plenty to auto kil. the galaxy s runs alot of programs all the time for no reason.
so far so good
I had my phone fully charged and tried this so far so good! Ill report more when I can test more. But it has definitely lasted longer so far. about an hour off the charger using wifi online and all, still full batt!
Lets hope this fixes it or Ill have to go back to stock.
So instead you have a program running that every two minutes kills running programs that will start again anyways, beginning the cycle all over again?
Edit: and the way android works, "running" is poor word choice
What its the difference between this and ATK? I'm pretty sure this will so more harm than good.
Sent from my SGH-T959 using XDA App
Oh, nice OP. Now you have programs constantly fighting themselves to run/kill each other. So now instead of the Android OS taking care of itself, you have these programs sucking down CPU cycles and battery juice.
Dump the autokiller and use ATK to manually kill things if you don't want them running. I get about 35hr of standby time.
Edit: If you really want to be smarter than the Android OS, uninstall the app/widget that's sucking down your battery.
I have seen over and over people state how they use ATK or other task killers to improve battery life, when in fact they are actually hurting android 2.2 multi tasking. In 2.2 google changed the api that devs used to kill apps in all other versions of android. I myself use Auto Killer and Auto starts. Those two apps tweak androids internal task manager and keep my phone running smooth
Even the creator of ATK and the other most popular task manager Advance task killer have stated it. Your better of using an app like Auto Killer ( http://www.appbrain.com/app/com.rs.autokiller ). It tweaks android internal task manager.
AutoKiller is an award winner minfree tweaker, it fine tunes android's inner memory manager to keep your device fast and lowers battery consumption. Also includes a manual process/service manager.
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Click to collapse
Here are a couple articles about why you dont need them in android 2.2
FAQ: Why You Shouldn’t Be Using a Task Killer with Android
http://geekfor.me/faq/you-shouldnt-be-using-a-task-killer-with-android/
Froyo update kills Android task killer apps
http://androinica.com/2010/08/09/froyo-update-kills-android-task-killer-apps/
Task killers have long been a crutch for users to forcefully shut down applications and “free up memory” to conserve battery life and space. However, that’s a common misconception buoyed by old Android flaws and the power of the placebo effect. Task killers actually get in the way of Android handling memory management as intended. We’ve already written an article on why you should not be using a task killer, so read that post for more information.
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Google and Cyanogen comments imply task killer/manager apps are pointless
http://androinica.com/2010/05/07/go...-imply-task-killermanager-apps-are-pointless/
However, developers of task killing apps are of a different opinion. Arron La, developer of Advance Task Manager, suggests that task killers are more important for legacy devices like the G1 and phones running older versions of Android.
“Task Managers were absolutely needed in the past before the new services UI came out in Android 2.0 or 2.1,” La said in an e-mail. “Task Managers had a niche of allowing users to quickly kill services associated with apps – including all the other stuff as well, such as alarms – but that was the only way to do it before the introduction of the new services UI.”
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I am gunna try out the difference. I do follow cyanogen and I saw that exact tweet lol. at the time though i was on windows. we will see what happens.
This needs to be moved to the head of the class as it is great info and everyone should read.
There is a lot of people running around saying task killers need to be used.
THis isnt winmo.
The idea that leaving all your applications open not hurting performance or battery flies against what most of us expect to be true. Lately ATK hasn't worked. I'll kill all apps, then minutes later they will all reappear. I will try going without a task killer for a while and monitor subsequent battery life.
What about all the OCD people? I would imagine it being hard for people with OCD to not compulsively close tasks.
I would add the use of auto killer as the op has stated. It works in conjunction with the way android kills task. You can set it aggressively or not. I cannot quote on battery life as I tend to damage mine. Only a rogue app would cause major drain. I also use a program called data on demand. That works by turning off data when the phone is off and lock.
this is indeed an interesting light for us all!
testing begins.
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polo735 said:
The idea that leaving all your applications open not hurting performance or battery flies against what most of us expect to be true. Lately ATK hasn't worked. I'll kill all apps, then minutes later they will all reappear. I will try going without a task killer for a while and monitor subsequent battery life.
What about all the OCD people? I would imagine it being hard for people with OCD to not compulsively close tasks.
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As an actual sufferer of OCD who is trying out the no task killer method, I will say that it IS making me itch a little bit :/
....need to stop killing tasks. Its hard. I'm so used to it now. Will report my findings!
Sent from my HTC HD2 using XDA App
Glad to see everyone is finding this info helpful. The word really needs to be spread.
Also you can add an app called watchdog that monitors your memory and lets you know when it gets below a certain threshold. it will then notify you and let you know wich app caused the memory drain.
You can do it. Consider this the support group for those who don't use task killers.
Thank u mvp77 for bringing this to light. For me my hd2 runs so smooth!!!
Well, with no task killer, after about 90 minutes of sitting on my desk at work, sending about 20 texts & listenening to 2 songs, my battery went from 70% to 35%. I was shocked at the accelerated battery drain, and I noticed that the back of my phone started getting hot too, which it NEVER did before I disabled the ATK. I re-enabled it around 5:30 on the way home, and after heavier texting, data, and music usage, it's only gone down to 22% after 4 hours.
I'm gonna conclude that my task killer serves a very good purpose, at least with my specific setup. Methinks I'll keep it enabled!
wow thats really strange because that actually goes against the way android actually works. as it stands the task killer is needlessly killing so called process's that may not even be active.
This is based on what the google android developers say. To each their own I will continue you to run without it as a see a speed increase without it. I would venture to say that there is a program that is causing problems.
kabuk1 said:
Well, with no task killer, after about 90 minutes of sitting on my desk at work, sending about 20 texts & listenening to 2 songs, my battery went from 70% to 35%. I was shocked at the accelerated battery drain, and I noticed that the back of my phone started getting hot too, which it NEVER did before I disabled the ATK. I re-enabled it around 5:30 on the way home, and after heavier texting, data, and music usage, it's only gone down to 22% after 4 hours.
I'm gonna conclude that my task killer serves a very good purpose, at least with my specific setup. Methinks I'll keep it enabled!
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I have never experienced battery drain like that. It would seem you have a bad app causing it. I would suggest you install watchdog and set the threshold at 30% and see what app is causing the problem.
The Creator of ATK stated on his blog, witch I can't find now, that his app does not work the same with 2.2 because the API used is no longer there.
Also install autokiller and autostarts to tweak android internal task manager and to stop unnecessary apps from starting.
I think it is the placebo effect cyangon and others mentioned.
I actually think my screen is killing my battery. I have to much current draw as noted using current widget.
I'll try Watchdog, and I've already got autokiller & autostarts installed.
I'm thinking about hard resetting. I've noticed that lately my battery hasn't even been charging completely, it only goes to 95% unless I charge it in WM or when it's turned off.
hazard99 said:
I actually think my screen is killing my battery. I have to much current draw as noted using current widget.
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I believe I have the same issue running ShubCraft 1.5. 95% of the power consumption goes to display, while everything else is at 5%. This is after 1 hour of usage.
In comparison. If I use MattC SenseUI build. 45% goes to battery while everything else goes to Phone Standy or Idle.
Though I can get about 20 hours on Shubcraft instead of like 8 hours for MattC. SenseUI must be very taxing on battery.
Well Like i stated at the beginning I ruin batterys by constantly tethering or atleast I think it does.
Watching the current widget the ma's can be upwards of 150ma which isnt right at all. When I look at watchdog I am under 95% idle which means apps are behaving correctly.
looking at the battery information it shows that the display is using the most of my battery.
Watch dog states that the android system is using 1.3% of cpu.
If i select real time watchdog jump to 6.8 percent which is understandable since it isnt being passive.
Right now I think the screen management is the problem. I cant do this any scientific way but based on what I see it seems to be the only reasonable thought.
+1 for screen being the cause every thing i use to test shows as screen being the issue of battery drain next to some live wallpapers
100% AGREE!!!
I have tried Taskiller and ATK and both did what they were made to do but my battery simply was eaten 12% every hour... So, I uninstalled EVERYTHING related to "battery preservation" and installed AUTOKILLER - this gave me 60% improvement over my old setup and battery life... I now easily pull more than 24hrs in stand-by - about 15hrs with average usage!
FYI: When installing certain apps (as AutoKiller) allow three four charging cycles - use phone as usual and re-charge 3-4 times... You will see that battery self-operates into the best working option and it starts working great...
With setCpu and ATK installed (with kill set during screen off and setcpu on ignore list) I had 12% drain / hr on stand-by ...
Both have been uninstalled now and only Autokiller is installed (Akiller shrinks memory threshold so Apps are shut-down natural "organic" way by Android OS) and I get less than 5%/hr drain on batery...
How is that possible? Simple - Linux is not like WinMo or WinOS - running process does not necessarily means it will drain battery.
Don't know if its just me but anyone else getting crazy battery drainage? I mean I use the phone but not enough where it will drop from 85% to 75% in a matter of 5 minutes. Very weird. I have my phone oc'ed to 1.4 mhz on kings conservative module. Any ideas?
Sent from my HTC Vision G2
I've been getting at least 12 hours. Im not using a module, or bluetooth, but I'm on Wifi all the time. GPS is typically on as well.
Sent from my T-Mobile G2 using Tapatalk
Try removing King's module.. I'm on 1.2 Ghz and I haven't seen any difference in battery consumption when at stock speeds as well..
Mines been unpluged for 13 hours and I'm still at 37%.
It'll last me about over 12 hours and up regardless just weird how it dropped 10% in 5 mins like that.
Sent from my HTC Vision G2
luis86dr said:
It'll last me about over 12 hours and up regardless just weird how it dropped 10% in 5 mins like that.
Sent from my HTC Vision G2
Click to expand...
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it calculates use/time so the percentage is a simple variable that will change as soon as you take a idle phone and start using it.
Don't know if this has anything to do with it but I did install a task killer from the market with the red android icon. Maybe this has something to do with it?
Sent from my HTC Vision G2
luis86dr said:
Don't know if this has anything to do with it but I did install a task killer from the market with the red android icon. Maybe this has something to do with it?
Sent from my HTC Vision G2
Click to expand...
Click to collapse
Probably best that you remove that.
The problem with task killers is that when you end those processes most of them automatically start back up which of course uses more power to do so. So say for example you get one of those automatic task killers then all day long your phone is ending processes and then restarting them.
Froyo has sort of a built in task killer which you can use to close apps that aren't working probably or that you notice are draining your battery.
You shouldn't use automatic task killers, as others have already stated above me. Another reason is that the task killers themselves are wasting and using system resources and cpu cycles.
What I generally do to keep my phone's unnecessary tasks down and such is to manually end tasks and keep a note which tasks are always popping back up. Once I've determined those processes/services, I would generally put them on the ignore list and have a widget placed on my homescreen so I may tap on it whenever I get a chance, or pass by it, killing off the tasks that I know don't make a difference on my daily use of the phone.
My ignore list consists of:
My Account
3G Watchdog
Voice Dialer
Beautiful Widgets
Widgetlocker
eBuddy
News Weather
BatteryTime
Astrid Tasks
Clock
MixZing
Google Voice
Gmail
Photobucket -- Because it doesn't give up after you've killed it.
You're going to take a battery hit overclocking. Other than that I'd look at what's running at any given time, and everything that you've got installed. There really isn't a need for a task killer. And if you're adept enough to use a module, you might want to look into disabling applications that you don't use via adb; if you haven't already.
To put it another way the more you're running, the faster your battery's going to drain.
Im Oc'ed to 1.4GHz and running all kinds of widgets and i text and call all day.
No issues at all. Both my orig phone and now my replacement phone.
So I'd have to check under running services under applications ? I uninstalled the task killer.
Sent from my HTC Vision G2
I am overclocked at 1.5ghz and my phone last all day. I think the two main things that attribute to this are:
1. I have a profile on SetCpu that underclocks my phone to 245mhz when the screen is off
2. I used this guide http://forum.xda-developers.com/showthread.php?t=809231 to disable alot of the stock apps that load automatically on the phone (Finance, Qik, Photobucket, Amazon Mp3 etc)
If you do want to try out the 2nd option send me a PM. I'm not sure if you are familiar with the application "Gscript" but it allows you to input a script and have it activate at the touch of a button instead of inputting lines in "Terminal Emulator". Basically, one click and all the BS apps are gone. Do you have the VISIONary root?
Yeah I do. Just charged my phone and it dropped from 97% to 77% in like a half hour. Something is def up. NOT NORMAL. And this was stock. No OC.
Anyone have a list of all the bloatware so I can disable them via terminal. Don't feel like looking thru pm list packages. Lol. Yes, call me lazy.
On a side note just looked at the temp of the battery its saying 101 f. Wtf?!
Sent from my HTC Vision G2
I just got the G2 yesterday to try out.
I charged the phone to 100% today and put it into Airplane mode (my office doesn't get reception), quit all the apps using ATK (froyo version), and killed potential network-hogging apps in Running Services menu. My battery went down to 83% without being touched in a matter of 30-60 minutes.
There's no custom OS/root/overclocking being done here. Anyone else find this a bit strange? Neither my Nexus One or Vibrant deplete this quickly. I also understand the whole battery calibration, but damn!
This seemed to help me. Try pulling out the battery from the phone for 1 min then pop it back in and power up. For some reason that helped. Phones at 50% with heavy use and I took it off the charger at 530am and its now 3pm
Sent from my HTC Vision G2
i took my phone off the charger at 6 am and i have 55% left on the battery 13 hours later. juicedefender baby
I to have battery issues...not to sure what it is. Just curious how some people are getting more than 10 hours of battery life. I too use Juice Defender and although at start is said 1.31...it now is going to 1.10. How do you all get such high battery life? I get at most from (what I call heavy use, twitter gtalk, txt, web, games) about a single work day which is 8 to 9 hours. Ideas...?
Sent from my T-Mobile G2 using XDA App
I use the current widget to monitor the current drain. Usually it is between 1-5 mA when the device is in standby (screen off). Since the last week I have noticed that the standby drain current has gone up to 50-60mA. I checked the processor and it is working normally and no app is misbehaving.
can anyone suggest what may be sucking the current ?
PS: wifi, gps, 3g, autosync all turned off and screen brightness at 15%
Have you given a try to this attempt by jamdog30?
Yes I have on demand plugins enabled. And I use the Skyfire browser.
A reboot has solved the issue (for now).
I tried a few launcher last days. I use LeeDroid 2.0 and used Revolution NO-Sense script few days ago.
I experienced the battery drain today morning. I saw that the android.process.acore (launcherpro) uses 100% CPU. I removed LauncherPRO, and CPU went down, but nothing good news about battery usage.
I installed LeeDroid without wipe, and it's okay again.
A similar problem i have is that when the phone is running for longer times the available memory goes way down.
When freshly booted its like 400+MB free. after couple days can only get it to 200MB.
And that with stock rom and frequently killing unnecessary tasks.
But i heard more about this kind of problem, that there is a native process taking a lot of CPU and memory usage.
HanZie82 said:
B.
And that with stock rom and frequently killing unnecessary tasks.
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Click to collapse
there you have your problem. DO NOT USE TASKKILLERS! they slow down your system and don't speed it up!
android magages the RAM on it's own. if something needs more RAM, android closes programs that are not needed. if you do it on your own, some parts remain in the RAM and android gets 'confused' and everything slows down.
androids RAM is nearly full most of the time, but, as I said above, it closes programs if it needs more RAM.
you can also also try to activate USB Debugging in settings->applications->developement