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K... I'm new to android (from iPhone) and I just bought the mt4g... I downloaded the advanced task killer, but every time I "kill" the apps, there are 10 more running less than 5 seconds later... I've set my autokill to crazy, have an ignore list, etc... any thing else I can do to limit what crap runs without me opening the app myself?
Sent from my HTC Glacier using XDA App
kevo817 said:
K... I'm new to android (from iPhone) and I just bought the mt4g... I downloaded the advanced task killer, but every time I "kill" the apps, there are 10 more running less than 5 seconds later... I've set my autokill to crazy, have an ignore list, etc... any thing else I can do to limit what crap runs without me opening the app myself?
Sent from my HTC Glacier using XDA App
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Click to collapse
I believe you are not supposed to use task killers on Android because the system manages apps and when you stop them it messes up something. Here is a link: http://geekfor.me/faq/you-shouldnt-be-using-a-task-killer-with-android/
Correct. There is no need for task killers with these phones.
Glad I asked... uninstalled it, guess I'll see how it goes
Sent from my HTC Glacier using XDA App
Yes sir! Plus thats why we have such big ram size
Sent from my HTC Glacier using XDA App
Wow I didn't know this, I just uninstalled my task manager.
myTouch4G (Glacier)
It can also hurt battery life as well. If you constantly force close applications the phone will boot them back up which puts strain on the processor and uses more battery life.
Sent from my HTC Glacier using XDA App
Speaking from personal experience: once there's enough RAM in the phone, there's no need for external task killer or manager. Yes, it was necessary on the phones like G1 or original MyTouch with less then 1 year old OS. At this point, Android matured enough to handle everything on its own and it does beatiful job at it. I am almost at the point of getting MT4G, using wife's old Cliq at the moment. I can't believe how much difference extra RAM does, it never slows down for me on 2.1 de-blurred. Be extra careful downloading multiple apps though because if one misbehaves it will be hard to know which one.
Remember, free RAM is wasted ram, especially true with FroYo
You should still use a task killer, just don't use an autokiller. Let's say you use play a game, open browser, open music, open 3+ other cpu intensive apps..They will not close on there own, till the ram is "extremely low". Apps still use cpu when in b/g, like syncing apps like fb and twitter.
Task Killers
I don't see any reason not to have a task killer...without it, how would you know if there is a rogue app on your system? With a task killer installed, I was able to see what apps were loading at startup and then if I rarely use it, I blocked it with Startups. This has had a huge impact (for the better) on my battery life as well.
I agree not to setup the task killer to aggressively kill tasks, but if you use it to see what is happening on your phone, I don't see the harm in them at all.
don't you think a task killer would be built into android if Google intended us to manually kill tasks?
I have actually been going into the packages and disabling them via a terminal emulator. It was really easy and it seems to have prevented them from launching again.
Theres an insane amount of discussion regarding the need for task killers on android 2.2+ since the newer versions of android have their own managing system for applications in the background. Most people are recommended advanced task killer before they leave their carriers store with their new phone.
My personal experience when using a task killer is it seems to speed up the phone a bit when used, makes my sensation home screen switching smoother etc. Without it, there seems to be a little lag after 15 minutes of decent use.
So whats the real deal ? Do they hurt your phone/battery life or improve it?
There have been many threads regarding task killers. Not just for sensation but android phones. They are worthless.
Sent from my HTC Sensation 4G using XDA Premium App
The new phone manage memory pretty well but it doesn't hurt to keep a task killer on ur phone just to check once in a while what you have running. I dont have a task killer per say but I use the Go Launcher which in a tab displays all of the apps running, it gives me an option to lock the ones I wana keep running, so Ive check all of my everyday normal stuff, browser, phone, youtube facebook etc. and once in a blue moon I go and kill everything else by clicking one button.
Sense 3.0 stock gave me 80-100mb of free ram (running stock, normal everyday usage)
Go Launcher EX gives me 130-150mb free ram (running stock, normal usage)
Go Launcher tweeked settings and killing extra tasks gives me 190-250mb free ram
Now, that's a lot of free ram, saved cpu cycles and ultimately improved battery life. Thats the only real practical gain... battery life. i mean the phone powerful enough to run all of the tasks of a power user and then some so performance on my sensation is never an issue for me anyway. You load up crazy live wallpapers and 3D animations and such, yea sure it'll get sluggish but killing random tasks will improve the efficiency only by a small margin anyway.
Task killer is like a tune up, once in a while. Or u can just simply restart your phone like my GF does every once in a while.
mobileusman said:
The new phone manage memory pretty well but it doesn't hurt to keep a task killer on ur phone just to check once in a while what you have running. I dont have a task killer per say but I use the Go Launcher which in a tab displays all of the apps running, it gives me an option to lock the ones I wana keep running, so Ive check all of my everyday normal stuff, browser, phone, youtube facebook etc. and once in a blue moon I go and kill everything else by clicking one button.
Sense 3.0 stock gave me 80-100mb of free ram (running stock, normal everyday usage)
Go Launcher EX gives me 130-150mb free ram (running stock, normal usage)
Go Launcher tweeked settings and killing extra tasks gives me 190-250mb free ram
Now, that's a lot of free ram, saved cpu cycles and ultimately improved battery life. Thats the only real practical gain... battery life. i mean the phone powerful enough to run all of the tasks of a power user and then some so performance on my sensation is never an issue for me anyway. You load up crazy live wallpapers and 3D animations and such, yea sure it'll get sluggish but killing random tasks will improve the efficiency only by a small margin anyway.
Task killer is like a tune up, once in a while. Or u can just simply restart your phone like my GF does every once in a while.
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thanks man very helpful stuff
I never had a need for task killers with any of my Android phones!
bobzoz said:
thanks man very helpful stuff
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NP, also in my opinion an efficient custom rom will do wonders for the Sensation... can't wait for the s-off update from HTC.
dubie76 said:
There have been many threads regarding task killers. Not just for sensation but android phones. They are worthless.
Sent from my HTC Sensation 4G using XDA Premium App
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they are not worthless if used correctly
I use the stock task manager and watchdog. Helps my battery alot
Sent from my HTC Sensation 4G using XDA Premium App
Confusion
I'd stay away from 3rd party task managers if possible. Especially on a phone running 2.3+. The ones given will most likely handle task killing in a more appropriate manner, instead of just bringing things to a complete halt, which can be detrimental for some apps.
There does seem to be a discrepancy between the two task managers on the sensation, though. Like posted above, with general usage and sense the HTC provided task manager shows about 80-100mb free. However, I had a habit of going into settings>applications>running services to see how much RAM was available (stock 2.3 way of task killing - habit I picked up from my Nexus S) and it normally lists it somewhere around 200mb free.
I'm not sure which is more accurate, but I'm betting on the longer method, since it's in the core of gingerbread. Plus, on every past phone I've had if it went below 80mb I would see some significant lag whereas this isn't the case on the sensation. My Nexus S on average had around 120-150mb free, and the sensation has 256mb more RAM. I know sense is a ram hog, but max I see it taking up is 150mb, so 200mb of total free space seems about right.
I beta-test a LOT of apps, and when they hang or otherwise cannot be killed off, a task manager/killer does the job faster than thumbing through the menus to do it. I only use it judiciously, however..to resolve a specific app.
c19932 said:
they are not worthless if used correctly
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This is correct. It's an often debated topic, but I've seen the benefits in battery life and data usage when using an app like Autostarts and wise use of a task killer. Till the Sensation is 100% rooted, Autostarts can only be used to a limited extent. But with full use of Autostarts, my use of a task killer is limited, though still worth having.
Here's a portion of a good discussion on the topic and posted by a recognized Android developer who knows the deal.
Yup. Autostarts is a must-have for anyone who wants a longer battery life.
and task killers are extremely useful once you have excluded all the appropriate apps. My mom is smartphone-illiterate, and sometimes she would open random apps by mistake. With a task killer she could end all those process with 1-click before her phone becomes more chaotic (and of course, I excluded all the appropriate apps to begin with)
*Disclaimer* This is all from a personal experience and testing/research from a long time android user, what I have discovered over time and has helped me and some friends. This will work whether your rooted OR not. I kept it as basic as I can so everyone can benefit. If you dont like what you read and disagree, or want to add something PM me, Ill change/add and give credit to you. Hopefully, this can grow with the community.
*Rooted Section Will be Added*
*When I charge my battery I usually drain it all the way down or as much as i can (around 20% left) then charge plugged in till green, then power down and charge for another hour or so. Not sure if this matters or not but seems to help me out try it!*
This guide will help you if your rooted or non-rooted, all the apps I talk about I honestly have no ties to the devs. I don't use any SUPER AWESOME AMAZING BATTERY SAVER 5000 apps or anything like that. Those mostly just turn ur radios off and on and kill apps in the background. In my experience a lot of them cause syncing issues with my e-mail and other notifications. I like to receive my information instantly not have an app waiting for me to turn my screen on to check for updates.
About my personal setup: Basically, I want my phone to last me all day but still perform well with a heavy use, WITHOUT needing to constantly change settings to save battery. With what I have here Im able to keep my Sensation running for a full day of moderate-heavy use (7:30am to around 10pm) with its STOCK battery (Did damn well on my Evo 4G too). Days of very minor use Ive gone into the second day with 60% + battery. Yes, I use all my home screens and have a good amount of widgets, I love sense and its widgets. I play games, surf the web, do a lot of texting, listen to a lot of music, decent amount of fbing and email, usually take a few pictures a day. Half my day is wifi/other is mobile data.
Here goes the real basics, mostly common sense here not trying to insult anyone. Feel free to browse thru it quick (green text) if your not totally new to the android scene, whats after it will be a good read for noobs and vets.
*I use the power control widget, make getting to a lot of settings quicker. Why waste battery digging thru menus?*
Basics:
-Screen brightness: (duh ) these pretty screens eat battery brighter=quicker drain naturally and from my experience leaving it on Auto Brightness kills more battery too. Each time your phone pulls information from the sensor to decide on how bright it should adjust itself too.
-GPS: If GPS is on it should not effect battery unless an app is using it and you see the GPS icon on your notification bar. I noticed a very slight increase in mA discharge when i had it enabled, to be safe leave it off if you dont use it extremely frequently.
Location thru mobile networks: Not to hard on battery. I leave mine on it does add drain but it takes away from my weather widgets updating when Im traveling.
-Bluetooth: Moderate battery drain. I honestly don't use it at all myself but if you do try your best to keep it off when not in use.
-Wifi: Android has gotten a lot better at managing wifi over the past few years. It doesn't drain that bad on battery and it shuts off/on periodically on its own when screen is off depending on whats using it.
Google Back-Up: Takes a little juice here and there no biggie. I dont use it just because I like to fresh install my apps when I try a new rom, run into less problems that way.
2G/3G/4G: This varies phone to phone, the slower speed the better battery life. If you know your not going to be using 4G for a while turn it off. I leave mine on 4G or wifi all day with my sensation. When I had Sprint and my Evo I would leave it off most of the time. Depending on your carrier and how their data works this is a big one. T-Mobile seems to handle well, Sprint and Verizon's 4G Ive seen eat an insane amount of battery.
Sync/Background Data: I lumped them together because sync is pretty much reliant on background data. These kill a lot of your battery in general. It syncs your apps (email, facebook, google data, contacts, etc.), the periodic checks your apps do to check for and download new emails and notifications, using background data (data still transmits when screens off). I always leave these on and still manage great battery life, I like things instant if I wanted to wait Id just wait till i got in front of a PC. Sync and Background data are the settings most battery saving apps control because they really can help your battery if you turn it off. You can control what core apps sync in settings>accounts and sync. Or the power widget that 95% of android phones have has it on there. I recommend minimizing the amount of apps you allow background data with, example: WeatherBug first launch it asks if it can automatically update itself in the background for apps were thats not necessary hit no.
Radio/Airplane Mode: Pretty self explanatory, turns off your connection to your wireless provider. No point in ever turning it off in my eyes, your phones no longer a phone.
What has really helped me with my battery life (non-basics):
There is a lot to be said when it comes down to 2.2+ android phones and whether they need a task killer anymore or not. Since Ive had a lot of android phones and a few now that are 2.2+ Ive done a lot of testing. I usually go about a 2 weeks on one idea or new task killer and keep a close eye on battery drainage using Battery Monitor Widget, free app in the market. It tells you exactly how much of your battery is being drained without killing battery itself. Each phone/rom settles at a different average mA lower the better. In my experience if I can keep my phone anywhere under 100mA when idle im doing good. This held true on both the Evo 4G and my Sensation. Some ASOP roms i could get down to the 30's but for sense under 100mA is good. Keep in mind you will get the occasionally spike here and there its just android and/or apps in the background. You can view the a chart of the battery data in Battery Monitor.
Instead of boring you guys with each task killer Ive used and its results, Ill just get down to what I found out in the end.
Basically, the way android 2.2+ works it really isn't necessary to run a task killer it does a decent job removing apps from memory when you need more memory. But at the same time I found running a task killer periodically (BUT not killing frequently used apps) results in a lower average mA drain leading to overall better battery life.
The best application I have used has to go Automatic Task Killer , trust me Ive used a lot from the top free ones to a few of the more popular paid ones. What this task killer does is kill a selection of apps you allow it too every time your phones screen shuts off and goes idle. On Automatic Task Killer's first boot your shown a screen of every application that could at some point run in the background on your phone. This part sucks a little bit but it is worth it, you need to select which of the apps you want to allow it to kill automatically. It does not kill foreground apps the ones you currently have open on the screen aka a browser or a game. Example your playing NFS: Shift and your boss walks by so you quickly pause and hit the power button turning off the screen, next time you turn the screen on it will kill all other allowed background apps but your game will still be up front and center.
Now the trick is to go thru and set it to kill apps you know your phone won't automatically just restart or you don't use 90% of the time. So don't select things like Dialer, Contacts, Clock, Calendar, Messages or apps you constantly use/check such as a third party SMS app or your main E-Mail Client or third party keyboards (various by person and what you use most). Letting the app automatically kill those is just going to lead to worse battery life because your phone will just restart it each time leading to more CPU cycles (not what you want and part of the reason some consider task killers bad things).
Also, when using any task killer and killing the proper apps sense seems runs smoother, a big deal with sense 3.0.
Re-calibrate Battery: After you flash a new rom or start using a new battery, you should use your recovery (CWM or other) to Wipe Battery Stats. Before you do this make sure your battery is at 100% and has been on the charger for over an hour with the fully charged green led on. This will allow your device to better drain your battery and can really help battery life.
So hopefully with a little messing around you can get a good setup where your phone lasts you all day without having to constantly keep changing settings and watching your battery life. All while everything stays syncing and instant. Hope this helps!
Thanks to people who have contributed:
-JadeSoturi
*ROOT Section (now that we have s-off )
Everything posted above can be done on any rom, rooted or none. There has been a lot of posts on "freezing apps" that you dont need or typically use, which does in fact really help battery life. Since, we (by we i mean sensation users) now have a permanent root this is my tiny second part of the guide for rooted devices.
I dont freeze my apps I prefer them to be gone for good if its something I dont see myself using or its bloat that came with my phone/rom. Since 98% of us will be using custom roms now this usually isnt an issue since most dev's r good at what they do and remove all the bs we dont need or normally use. Still there is some apps we may not want on our phones so for that I use SystemApp Remover . Its a great App for people who dont want to have to worry about going in manually and getting rid of system apps.
Its just basically an Uninstaller that allows you to access any and every app on the phone for you to uninstall (thats y roots needed). For me I just go in an drop the apps I know i wont use. A lot of roms come with carrier add-ons and such, those I normally delete as well as a few HTC sense widgets and apps I see no need for. It will free up space and increase your phones battery life with most things you delete.
Now, be careful. You are prompted upon opening SystemApp Remover that messing in system apps is dangerous and it is. If your not sure what something is DONT touch it, simply do a google search or ask around to see if its safe to remove first.
Nice to have needed guides posted. Hopefully someone will see fit to add this to the Stickies. Thanks.
no problem glad to give back.
itd be nice to have my first sticky, maybe when some people start noticing results and the thread picks up
Leaving GPS on has NO impact on battery life unless you have an app that is actively using it (you will notice the little satellite icon in the notification bar).
Thanks your this what is the automatic task killer you used because there are a few when I search on the market and wasn't sure which one to get?
Sent from my HTC Sensation Z710e using XDA Premium App
TheBiles said:
Leaving GPS on has NO impact on battery life unless you have an app that is actively using it (you will notice the little satellite icon in the notification bar).
Click to expand...
Click to collapse
Updated OP. I do still notice slightly higher mA when it is enabled even if theres no apps using it
Thanks for the info, I'm trying out the automatic task killer to see how it affects my battery life.
Oh, and I didn't even read the bottom of your post. DO NOT USE TASK KILLERS WITH ANDROID. PERIOD.
TheBiles said:
Oh, and I didn't even read the bottom of your post. DO NOT USE TASK KILLERS WITH ANDROID. PERIOD.
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Click to collapse
No offense bro, but you should read his entire post before you start ripping it apart. It looks like he put a lot of effort into it. He explains his reasoning for the task killer with evidence and it makes sense.
Thanks OP, I'm using your suggestions already. Will update soon.
moh0 said:
No offense bro, but you should read his entire post before you start ripping it apart. It looks like he put a lot of effort into it. He explains his reasoning for the task killer with evidence and it makes sense.
Thanks OP, I'm using your suggestions already. Will update soon.
Click to expand...
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With more evidence than the article I posted? Yeah, right.
TheBiles said:
Oh, and I didn't even read the bottom of your post. DO NOT USE TASK KILLERS WITH ANDROID. PERIOD.
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Click to collapse
I address the fact that android doesnt need a task killer but if you read the whole thing automatic task killer lets you choose which apps to kill, leaving out worry of killing system apps that just restart.
Also, this is for battery life and performance, my battery's mA drains slower when i use a task killer for non system apps as well as keeps Sense 3.0 running smoother. I have had sense bog down on me a few times when not keeping a task killer handy.
It isnt necessary to have have a task killer and in the average users hands it can cause more harm than good. But this threads helping to school people on a way for better battery life using a safer method than a BASIC KILL ALL task killer.
Lastly, why did they include a task killer with my android if they dont think we need one?
TheBiles said:
Oh, and I didn't even read the bottom of your post. DO NOT USE TASK KILLERS WITH ANDROID. PERIOD.
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Wow, that was helpful. What a waste of an attempt to incite a useless forum war.
@ bobzoz
Nicely put, it will definitely help the newbies to android and made me think twice about a couple of things even though I'm on my 4th android phone.
bobzoz said:
I address the fact that android doesnt need a task killer but if you read the whole thing automatic task killer lets you choose which apps to kill, leaving out worry of killing system apps that just restart.
Also, this is for battery life and performance, my battery's mA drains slower when i use a task killer for non system apps as well as keeps Sense 3.0 running smoother. I have had sense bog down on me a few times when not keeping a task killer handy.
It isnt necessary to have have a task killer and in the average users hands it can cause more harm than good. But this threads helping to school people on a way for better battery life using a safer method than a BASIC KILL ALL task killer.
Lastly, why did they include a task killer with my android if they dont think we need one?
Click to expand...
Click to collapse
The same reason HTC and T-Mobile included all of that other BLOATWARE crap.
dazzlet said:
Thanks your this what is the automatic task killer you used because there are a few when I search on the market and wasn't sure which one to get?
Sent from my HTC Sensation Z710e using XDA Premium App
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Updated OP with links, good call
TheBiles said:
The same reason HTC and T-Mobile included all of that other BLOATWARE crap.
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Click to collapse
It's made by Google, not HTC or T-mobile.
Im just sharing how with people how I get good battery life. Trying to help out, if you dont agree with my method than just dont use it and ignore this thread.
bobzoz said:
Its made by Google, not HTC or T-mobile.
Im just sharing how with people how I get good battery life. Trying to help out, if you dont agree with my method than just dont use it and ignore this thread.
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That looks like part of HTC's Sense. You definitely won't find that in AOSP Android.
TheBiles said:
That looks like part of HTC's Sense. You definitely won't find that in AOSP Android.
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Click to collapse
http://en.wikipedia.org/wiki/HTC_Sense
Apps section.
Im not trying to have a battle man just ignore the thread if you dont agree with it. Easy stuff
bobzoz said:
http://en.wikipedia.org/wiki/HTC_Sense
Apps section.
Im not trying to have a battle man just ignore the thread if you dont agree with it. Easy stuff
Click to expand...
Click to collapse
Wow, you cited Wikipedia. Credible info there!
I'm only trying to help out the other forum users who are being mislead. I've been through a lot of Android devices and spent a lot of time focusing on things like this, and I know what I'm talking about.
Edit: And the only task killer you will find made by Google is the one within Android OS itself. Go download an AOSP build of Android with the latest Google Apps and let me know when you find a task-killer app.
TheBiles said:
Wow, you cited Wikipedia. Credible info there!
I'm only trying to help out the other forum users who are being mislead. I've been through a lot of Android devices and spent a lot of time focusing on things like this, and I know what I'm talking about.
Edit: And the only task killer you will find made by Google is the one within Android OS itself. Go download an AOSP build of Android with the latest Google Apps and let me know when you find a task-killer app.
Click to expand...
Click to collapse
Im just sharing what works for me and like i said in the OP ive been doing this for a long time too. If you want to continue coming at me please do it thru a PM.
Hi all, ive had my play for a few months now and im having problems with battery life as most seem to have had at some point. Ive tried a bigger battery but it turns the phone into something from the 90s lol....so i then tried some task killers but ive noticed they seem to kill a few tasks, then 5 mins later the tasks have started themselves up again so i spend my time going in and out of the task killer hitting optimise which is a total pain and im thinking pointless? Ive heard these newer builds of android manage tasks anyway but i think there are still some tasks/processes i could do without... My question is, would it just be better to uninstall the task manager and then manually force close tasks/processes i dont need and if i do do this will they stay closed/killed till i manually open them again or reboot, or will they automatically restart themselves? Im mainly talking about preloaded stuff i dont need like timescape and data monitor and other battery eating rubbish.
Rooting is an option but now being on 2.3.3 and awaiting 2.3.4 it seems like alot of agro just to clear some running bloatware (downgrading to uk generic firmware 2.2 then gingerbreak then upgrading then removing bloatware then reinstalling removed bloatware for every update, sigh)... If the damn tasks would just stay closed im sure my battery would last a bit longer...
So any difference force closing tasks manually vs task killers and would it help with battery life?
This is a great phone with 2 flaws one is battery life the second is small internal memory... Rooting seems to help fix these problems from what i have read. Why cant sony release a small app/program to let us clear the bloatware without the hassle of rooting.
This has turned into more of a rant, whoops!
Any ideas...?
Sent from my R800i using XDA App
Right understand this. There is no point closing apps or using task killers in android. It makes no sence. This isnt windows, android handles ram in a totally diffrent way to windows, In windows the more free ram you have the faster the pc/phone right? well it's the oposite in android, the less free ram the better, It means android is managing it's own workload, unlike windows application are split into 2 catagories, Applications and process, Now android can have an application running in the background but it will freeze the active process if your not using it, It will keep the ram that application is using a keep it save, so when you relaunch the app it's fast and smooth, Kill the app and you may reclaim the ram but you have to wait for the application to reload and restart. I think life hacker tells it better then me. Read this!
"Android Task Killers Explained: What They Do and Why You Shouldn’t Use Them
Android task killers improve your phone's performance while also boosting battery life—or at least that's the much-debated promise. Here's a look at how task killers actually work, when you should (or shouldn't) use them, and what you can do instead.
A task killer is an app from which you can (sometimes automatically) force other apps to quit, the hope being that the fewer apps you have running in the background, the better your Android's performance and battery life will be. Not everyone agrees with this premise, though. The argument about whether task killers are effective rages all over the internet: Android forums are full of threads with constant bickering and conflicting anecdotal experience, making it difficult for most users to make sense of the situation.
Below, I'm going to dig into the truth about Android task killers: that apart from maybe some older phones, Android manages tasks fairly well on its own, and how task killers present quite a few problems. I'll also take a look at the rare occasions when they're useful, and offer some alternatives you should try to improve your phone's performance and battery-life quirks.
Before we dive in, here's a quick overview of how Android handles process management by default.
How Android Manages Processes
In Android, processes and Applications are two different things. An app can stay "running" in the background without any processes eating up your phone's resources. Android keeps the app in its memory so it launches more quickly and returns to its prior state. When your phone runs out of memory, Android will automatically start killing tasks on its own, starting with ones that you haven't used in awhile.
The problem is that Android uses RAM differently than, say, Windows. On Android, having your RAM nearly full is a good thing. It means that when you relaunch an app you've previously opened, the app launches quickly and returns to its previous state. So while Android actually uses RAM efficiently, most users see that their RAM is full and assume that's what's slowing down their phone. In reality, your CPU—which is only used by apps that are actually active—is almost always the bottleneck.
Why Task Killers Are (Usually) Bad News
Apps like Advanced Task Killer, the most popular task killer in the Market, act on the incorrect assumption that freeing up memory on an Android device is a good thing. When launched, it presents you with a list of "running" apps and the option to kill as many as you want. You can also hit the Menu button to access a more detailed "Services" view, that lists exactly which parts of each application are "running", how much memory they take up, and how much free memory is available on your phone. This set-up implies that the goal of killing these apps is to free up memory. Nowhere on the list does it mention the number of CPU cycles each app is consuming, only the memory you'll free by killing it. As we've learned, full memory is not a bad thing—we want to watch out for the CPU, the resource that actually slows down your phone and drains your battery life.
Thus, killing all but the essential apps (or telling Android to kill apps more aggressively with the "autokill" feature) is generally unnecessary. Furthermore, it's actually possible that this will worsen your phone's performance and battery life. Whether you're manually killing apps all the time or telling the task killer to aggressively remove apps from your memory, you're actually using CPU cycles when you otherwise wouldn't—killing apps that aren't doing anything in the first place.
In fact, some of the processes related to those apps will actually start right back up, further draining your CPU. If they don't, killing those processes can cause other sorts of problems—alarms don't go off, you don't receive text messages, or other related apps may force close without warning. All in all, you're usually better off letting your phone work as intended—especially if you're more of a casual user. In these instances, a task killer causes more problems than it solves.
What You Should Do Instead
That said, not all apps are created equal. Many of you have used task killers in the past and actually found that after freeing up memory, your phone works a bit better. It's more likely that this is because you've killed a bad app—one that was poorly coded, and (for example) keeps trying to connect to the internet even when it shouldn't. Any performance increase you experience is more likely because you killed the right app, not because you freed up loads of memory (or, in many cases, it's just placebo). Instead of killing all those apps, find out which ones are actually causing the problems. If you really know what you're doing, you may benefit from using a task killer to stop the one or two inefficient-but-loved apps on your phone.
Note, however, that this is still a contested notion. A lot of developers (including ROM builder extraordinaire, Cyanogen) will not even look at your bug reports if you're using a task killer. In this humble blogger's opinion, your best bet is to stay away from regular task killer usage entirely. If you absolutely have to have that one battery-killing app on your phone, though, kill away—just be aware that when you experience a recurring Android bug later on, the task killer may be at fault. Of course, you can just stop using it to determine whether that is or isn't the case.
With task killers firmly in the better-off-without box, there are still a number of other things you can do to fill the void, improving your performance and battery life:
Watch for Runaway Processes: Previously mentioned Watchdog is a slightly different kind of task killer, in the sense that instead of telling you your phone's out of memory and it's time to go on a task killing spree, it alerts you when the occasional app starts eating up CPU for no reason. You can then kill the app with Watchdog and get on with your day (though honestly, at that point, I usually just reboot my phone). If it happens often with the same app, however, you may want to move on to the next step.
Uninstall Bad Apps: Worse than the occasional, one-time runaway app is the poorly coded, always-eating-CPU app. If you find (with Watchdog or through some other method) that a particular app seems to drain CPU and battery life whenever it's running, confirm your suspicions by uninstalling it and seeing what happens. If an app is causing problems on your phone, you're probably better off without it.
We advocate rooting Android devices a lot at Lifehacker, but that's because it really is as useful as everyone says it is. You can over- and underclock your phone with SetCPU, install custom ROMs that noticeably improve performance and battery life, and use the ever-useful, crapware-thwarting Autostarts utility to stop apps from starting up on your phone in the first place. Honestly, with one-click rooting apps like previously mentioned Universal Androot available for most phones, rooting only takes a few minutes to do, and you'll be much happier for it.
Update: Many of you also mentioned the root-only app Titanium Backup, which will help you get rid of the pre-installed crapware that comes on most phones, which are one of the worst offenders of phone lag. Thanks to all of you that sent this in!
Seriously, Use the Power Control Widget: This may sound ridiculously obvious, but if you aren't already using some form of the Power Control widget, you should. The things that drain the most battery on any smartphone are Wi-Fi, Bluetooth, GPS, and your screen. Turn them off when you don't need them and you'll find that you can eke out considerably more battery life.
Charge Your Phone: Even more obvious yet rarely heeded advice: Charge your phone often. This isn't as hard as it sounds for most people. While you're sometimes stuck going out for 14 hours with no place to charge your phone, the majority of us spend our days in our homes, our offices, and other places rife with electrical outlets. Buy a few extra chargers and place them strategically around your home, car, and office. Whenever you're sitting around at home or working away at your desk, you can use that time to dock your phone and give it some extra juice without worrying about battery or performance drains. Before I upgraded to Android 2.2, my battery life was pretty awful, but just having a charger in my car and next to my computer made a huge difference in how often I got the dreaded "low battery" message."
Theres no way to remove the bloatware without root access. I rooted my xplay yesterday using the new zergrush method, you dont need to downgrade or anything you just type in a bunch of stuff in the command promt and its done.
Just to add on to AndroHero's post. In short, Task Killers actually REDUCE your battery life. Just leave it alone, turn off bluetooth and wifi, etc when youre not using them, keep your text message conversations low, and your email inbox clear. Thats about all you can do.
Also the battery life may be related to your coverage area. My phone will last all weekend at home, but is dead in 8 hours at my office due to all the interference and poor cell service coverage, its always searching for signal.
Very interesting thank you for the detailed explanation and tips. Im gonna remove my task killer and try watchdog if i can, to keep an eye on my cpu. I am also going to look into rooting my phone, its just the constant android updates and horror storys of rooted phones with removed bloatware bricking after OTA thats putting me off.
I can understand how having an app in memory ready to go keeps your phone quick (in the same way a cookie in your browser cache makes a page load faster?) but if the app is monitoring data or connecting to the net then they are using some cpu and need to be terminated or stopped from starting. It looks like the only way to do this is to root and then as said in your post ill beable to stop them starting up in the first place.
Thanks again for your time and info
Sent from my R800i using XDA App
b4d5h0t said:
Very interesting thank you for the detailed explanation and tips. Im gonna remove my task killer and try watchdog if i can, to keep an eye on my cpu. I am also going to look into rooting my phone, its just the constant android updates and horror storys of rooted phones with removed bloatware bricking after OTA thats putting me off.
I can understand how having an app in memory ready to go keeps your phone quick (in the same way a cookie in your browser cache makes a page load faster?) but if the app is monitoring data or connecting to the net then they are using some cpu and need to be terminated or stopped from starting. It looks like the only way to do this is to root and then as said in your post ill beable to stop them starting up in the first place.
Thanks again for your time and info
Sent from my R800i using XDA App
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Rooting is not going to do this for you. Rooting WILL allow you to remove apps that have no use to you whatsoever. But apps, even ones you aren't using are still going to behave like this. Not only that, but those actions are part of what keeps them snappy. And if you kill them, all you would be doing is making it harder and slower to run them when you need to as it will do all those things you wanted it to not do while it was in the background. That drains the battery more. The path you are following with this isn't gonna solve your problem. Android manages its memory on its own better than any of us can.
As I mentioned about coverage area, for example do you have poor service where you are? If you have WiFi keeping it on will prevent the phone from searching for data service which will help.
b4d5h0t said:
Very interesting thank you for the detailed explanation and tips. Im gonna remove my task killer and try watchdog if i can, to keep an eye on my cpu. I am also going to look into rooting my phone, its just the constant android updates and horror storys of rooted phones with removed bloatware bricking after OTA thats putting me off.
I can understand how having an app in memory ready to go keeps your phone quick (in the same way a cookie in your browser cache makes a page load faster?) but if the app is monitoring data or connecting to the net then they are using some cpu and need to be terminated or stopped from starting. It looks like the only way to do this is to root and then as said in your post ill beable to stop them starting up in the first place.
Thanks again for your time and info
Sent from my R800i using XDA App
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You may also want to try a minifree manager like autokiller in the market. Rather that acting like a task killer, it can edit androids built in process manager you can change how much ram is allocated to background and foregrounds apps and also how much memory android cache's, the cache is the minium amount of ram that android allows to be free, you could set it to 150mb if you wanted, then android will never let your free ram go lower than 150mb.
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Nice one ill look into it
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Just let Android manage itself, My Xperia play will last an entire day with a lot of use such as wifi, Bluetooth and other things.
I use a task killer so im curious why some people say not to use them. What are your opinions?
Sent from my Inspire 4G using xda premium
I personally use them and havent come across suggestions not to, as long as u know what you are "killing" and its not a system process , it should be ok and yes it does free up RAM
I dont use any task killer and Im happy
I personaly would have a task killer one that kills all when idle. and frees up ram due to the fact i like to do cpu hungry tasks often
Ystrem said:
I dont use any task killer and Im happy
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Same here, kill the task, and then feed the task killer the battery power saved.
I have tried them and found most of them didn't help much.
cnavi said:
Same here, kill the task, and then feed the task killer the battery power saved.
I have tried them and found most of them didn't help much.
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Same here.
I don't use any of them.I used before but i don't saw too much help.Just task killer use cpu more and load ram.I use now just a shortcut of standard runing services default from android.
Don't use task Killers. Android has its own built in task manager Which works far better than 3rd party task killers. All you doing is making android reload everything again. Then you wonder why this app doesn't update in the background or work properly it is your fault. Your killing off the processes. Ram is essentially useless in android if it's not being used.
If you have lets say most phones have 512-1gig of ram. Your phone will never say you have 512 ram full please free up ram. It gets to a certain memory limit like depending on what it was set to and then end the processes automatically by itself. If there are many processes running android will start swapping out processes to replace for the new one. When your playing a game and say oh i want to browse the web to check on some game codes or whatever you can go right back to the game.
What if you want to listen to your own music as well. You can then go right back to the game in the exact spot left off. But if you go I'm kill the game process off you won't be able to do that. Don't press that Clear ram in that task manager you have either. All process will be killed including google services. Which will be reloaded again as well as system processes. Everytime android needs to reload its using more power meaning worst battery life.
The only time you should use a task manager is when there is a rogue application or a memory leak.
Watchdog
I don't use a Task Killer, but I do like Watchdog. It's more of a system monitor and lets me know if any background apps jump over a particular CPU usage threshold.
---------- Post added at 02:02 PM ---------- Previous post was at 01:55 PM ----------
There is a free, Lite version if you want to give it a try. Amazon had the pay version as their free app o' the day a while back, and I jumped on it.
market.android.com/details?id=com.zomut.watchdoglite&hl=en
I use to use taskkiller but my phone seems to run the same with or without, so I got rid of it.
exileinoblivion7 said:
I use a task killer so im curious why some people say not to use them. What are your opinions?
Sent from my Inspire 4G using xda premium
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i dont like task killers, if your really desperate for ram and use android, i recommend using the v6 supercharger script made by zeppelinrox. ofcourse the thread can be found here in xda. Iwouldnt recommend task killers for several reasons:
1 they take some ram space themselves
2 they use some cpu thus making ur phone slower
3 they use some cpu thus draining your battery faster
4 they make your boot time on your phone longer because they are being loaded whereas scripts dont have that issue
5 i havent actually seen any propper task manager that has like autokill option and woks properly so you constantly have to press the end tasks button (like on system panel for example) and thats quite boring if your doing it all the time... scripts dont have that issue
Killbynature said:
Don't use task Killers. Android has its own built in task manager Which works far better than 3rd party task killers. All you doing is making android reload everything again. Then you wonder why this app doesn't update in the background or work properly it is your fault. Your killing off the processes. Ram is essentially useless in android if it's not being used.
If you have lets say most phones have 512-1gig of ram. Your phone will never say you have 512 ram full please free up ram. It gets to a certain memory limit like depending on what it was set to and then end the processes automatically by itself. If there are many processes running android will start swapping out processes to replace for the new one. When your playing a game and say oh i want to browse the web to check on some game codes or whatever you can go right back to the game.
The only time you should use a task manager is when there is a rogue application or a memory leak.
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Great job explaining this man, I've been aware that killing apps just makes them restart. I really only kill apps if they are acting a fool.
And to clear things up I don't have a task killer installed, however I do use the one built into the go launcher app drawer to kill apps that go nuts.
I have used the v6 script before, however I recently downloaded Rom toolbox and it let's you adjust minfrees from there. You guys should check it out
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I don't use a task killer. My phone burns less than 1% of battery per hour when idle.
Nexus One on Cyanogenmod 7.1
exileinoblivion7 said:
I have used the v6 script before, however I recently downloaded Rom toolbox and it let's you adjust minfrees from there. You guys should check it out
Sent from my Inspire 4G using xda premium
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i have a low end phone, as i ran out of cash after buying myself headphones and an itouch, so i couldnt get the phone of my dreams and had to settle for a really cheap samsung galaxy 3 so i dont have a very wide choice of minfrees i can choose from... i got like 256 ram or something, and i dont use swap because i hate partitioning my sdcard...
im so definitly changing my phone in 2012, im either waiting for the nozumi to come out (huge sony ericsson fan ^_^) or im settling for the HTC gigabeats
Task killers are good when you see a rogue app that is draining a ton of your battery life but aren't good when you use the "Kill All" button. As long as their are poorly developed applications, there will be a use for task killers.
some people will tell you not to use task killers because it inhbits Android's normal functioning by interfering with RAm use, causes things to go wrong, running apps don't use battery, blah blah blah. but there are a few problems with these claims.
First, Android's RAM management is not flawless. no Operating system is. fanboys keep claiming it is yet offer no support for whether a 3rd party task killer is better or worse. in fact, they were all claiming this when Froyo was the latest. but then when Gingerbread came out, one of its new features was better RAM management, which fanboys around the internet praised it for, which means there had, in fact, been room for improvement, which they had been denying for quite some time.
second. there are around 500,000 apps on the market. some are flawed, causing RAM leaks and various other malfunctions that ANdroid can't always handle. a task killer is your best, and sometimes only option in this situation, as you might not reasonably have the option of deleting the app permanently.
third, battery life. it may be true that apps simply being running in the background alone doesn't use battery; I'm not sure. yet what fanboys routinely ignore is, many of these apps don't just sit there waiting to be turned on again. some of them turn on so as to collect user data about all sorts of things, then broadcast it to the developer for various uses. this broadcasting uses your phone's radio even when in the background, and that DOES use electricity - from your battery, not to mention data if you have a limited plan. a very large amount of apps do this, which is one major reason why ICS now includes a data management menu that monitors all apps' data usage, as well as a built in app freezer that stops apps from running until you allow them to again.
I use the one that comes stock, and alathough it frees up ram I dont notice any difference in battery drain (1% per hour) or any difference in performance
Falkner09 said:
some people will tell you not to use task killers because it inhbits Android's normal functioning by interfering with RAm use, causes things to go wrong, running apps don't use battery, blah blah blah. but there are a few problems with these claims.
First, Android's RAM management is not flawless. no Operating system is. fanboys keep claiming it is yet offer no support for whether a 3rd party task killer is better or worse. in fact, they were all claiming this when Froyo was the latest. but then when Gingerbread came out, one of its new features was better RAM management, which fanboys around the internet praised it for, which means there had, in fact, been room for improvement, which they had been denying for quite some time.
second. there are around 500,000 apps on the market. some are flawed, causing RAM leaks and various other malfunctions that ANdroid can't always handle. a task killer is your best, and sometimes only option in this situation, as you might not reasonably have the option of deleting the app permanently.
third, battery life. it may be true that apps simply being running in the background alone doesn't use battery; I'm not sure. yet what fanboys routinely ignore is, many of these apps don't just sit there waiting to be turned on again. some of them turn on so as to collect user data about all sorts of things, then broadcast it to the developer for various uses. this broadcasting uses your phone's radio even when in the background, and that DOES use electricity - from your battery, not to mention data if you have a limited plan. a very large amount of apps do this, which is one major reason why ICS now includes a data management menu that monitors all apps' data usage, as well as a built in app freezer that stops apps from running until you allow them to again.
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Could you please explain what third party task killers do that the Android system manager doesnt do natively?
johnston9234 said:
Could you please explain what third party task killers do that the Android system manager doesnt do natively?
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From my personal experience it doesn't kill some rogue apps that drain my phone's battery life. Occasionally I use the app "GPS Status" to help find my location faster and if I don't immediately kill the app after my location is locked, the app shoots up to 30-40% on Battery Status.
johnston9234 said:
Could you please explain what third party task killers do that the Android system manager doesnt do natively?
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work responsively, to start with. every time i've tried to open the application manager on android, I first have to go through all the sub menus to get to it, then sit and wait for it to slooooooooooowly load up the list on installed apps, then running apps, then click on the app, then wait for it to load that particular app's info, THEN I can force close it.
two, they often catch apps running that the default manager doesn't notice, I presume because their developers code them to be hidden somehow.
so yeah, they're occasionally a valid option to use.
I'm happy with or without task killer )
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