How To Stretch Battery Life on the HTC EVO 4G


Today’s Android smartphones can do so much, with apps multitasking in the background, widgets grabbing updates from the web and system services running all the time. This power is not without a price — heavy power consumption. Android can do so many things at one time that even when it appears to be idle there may be many tasks running in the background. This means the battery is being drained even when it doesn’t look like anything is happening.

The best example of this are the wildly varying reports of the HTC EVO 4G battery life. Some reviewers report the EVO’s battery only lasts a few hours, while many find it lasts as long as any other phone. The different experiences with battery life on the EVO and other Android phones most likely points to different settings for apps and widgets on the phones. A few simple steps can tune Android 2.x to give good battery life on any phone. These steps focus on three different areas — user settings, system settings and app settings.

Jenn Lee of Good and EVO has published 20 tips to stretch the battery and it is a good place to start. She has detailed a number of things the EVO owner can do, obvious and less so, that can be tweaked to get that battery lasting longer. Some of her tips are just common sense but give it a look. In this article I will concentrate on the major areas that have proven effective in my own usage.

User settings

Android lets the user customize the look and feel of the home screens, and phones with HTC Sense even more so. As nice as pretty interfaces can be, some of them will hit the processor (and thus battery) harder than others. The Live Wallpaper is one such feature — animated desktops are cool but they drain the battery faster so go with the old school non-moving wallpaper. If you are really serious about power saving then turn off window animations. A drop saved here and there all add up to longer battery life.

Other settings that apply to any phone apply to Android too, such as screen brightness. Keep your brightness turned down as low as comfortable as this is a big power drain. If your phone has an ambient light sensor it’s usually good to use it, as it will keep the backlight turned down based on conditions.

System settings

Android is a very powerful OS, and Google (s goog) has made just about every aspect of the system operation configurable by the user. This is great for power users, but the number of settings can overwhelm more casual users. Most settings never have to be touched by the user so this is no problem, as long as the system defaults are optimum. This is not always the case when the goal is to stretch battery life as long as possible.

The EVO 4G has special capabilities that can have an impact on battery life. These include Wi-Fi, 3G, 4G, Bluetooth, GPS and Mobile Hotspot functions. All of these use at least one radio on the phone, and that means power consumption. It’s good to get in the habit of turning off the individual functions unless they are being used. If you’re on a Wi-Fi network, turn off the 4G. If you’re in a 3G coverage area, also turn off the 4G. The same is true for the GPS and Bluetooth — unless you are actively using them keep them turned off. You will save some battery life, if not a lot.

Android has some system settings that can be set to maximize battery life, and these are not always intuitive. Two of the most effective settings you can change are the Wi-Fi and 4G Notifications. The EVO constantly scans for Wi-Fi and 4G networks that are available, and this has a noticeable power drain. Go to Settings > Wireless & networks > Wi-Fi > Network Notification and uncheck it. Do the same for the 4G Notifications. This will not prevent the EVO from finding the network when you turn the given radio on.

Another setting that makes a big difference is a bit unclear on what it does. Go to Settings > Wireless & networks > Mobile networks and uncheck “Enable always-on mobile data.” All data functions work as expected with this disabled so I’m not sure what this does, but it does save a lot of battery life.

Wi-Fi uses less power than the 3G/4G radios, but the EVO does something by default that is not battery friendly. When the Wi-Fi is set to sleep after a certain time, the phone must fire up either 3G or 4G to do background syncing. It actually uses less battery to have Wi-Fi on all the time if it is turned on, so disable the ability to sleep. Go to Settings > Wireless & networks > Wi-Fi Settings and hit the Menu button. Tap the Advanced button and then tap “Wi-Fi sleep policy”, and then set it to Never. Believe it or not this has a noticeable affect on battery life.

App settings

It is possible with all the user and system settings properly set to still see the EVO battery draining dangerously fast. This is almost always the result of various apps/ widgets running in the background that are tapping the data network, even when the phone is idle. It is imperative that care be given to restrict apps from doing this with abandon. This is where the good multi-tasking ability of Android can bite you, if you have several apps in the background all polling the network.

The first thing you should do is control which social networks are allowed to auto-sync. Some of these default to frequent syncing, and this means heavy battery usage. Go to Settings > Accounts & sync and have a look at what is there. The first two settings, Background data and Auto-sync are both checked on my EVO. Some folks advocate restricting that, but I haven’t found turning these off to yield much value.

Below that is the list of accounts that can be set to auto-sync, and this is where you can take a lot of control over your battery usage. This is the list of accounts on my EVO:

  • Facebook for HTC Sense
  • Google
  • News
  • Stocks
  • Twitter
  • Weather

The sync icon to the right of each indicates if it is set to auto-sync or not. Mine only has three of these set for auto-syncing: Facebook, Google and Weather. News, Stocks and Twitter I have turned off for syncing. I found that they will sync too much and will use the data network a lot if set to auto. Note that they will still manually sync when I fire up these apps so I don’t lose anything other than background checks.

Facebook is set to sync every 2 hours, Google has all three syncs turned on (calendar, contacts, Gmail) as I want these to update right away. Weather is set to update every 3 hours. These are just my own preferences, you can turn these off completely or set them to some other update frequency. I get good results with these so that’s what I use.

Individual apps can be very greedy when it comes to background updating. I ran into one app that defaulted to do a sync every 30 seconds, believe it or not. I prefer to restrict all apps from updating in the background so I can control the system so as soon as I install an app I open up its settings and search for the update or sync setting. I turn it off or set it to manual, and that makes a big difference. Some Twitter apps have more than one setting so make sure you get them all. I also turn off notifications for these apps as that can trigger a background update too.

The HTC Sense package has its own widgets and apps and these can trigger auto-updating once they are run. Peep is a good Twitter client but will start updating and notifying you of updates all the time. It is important to go to settings and turn that off, especially if you use another Twitter client as I do. The Friendstream widget and app is a wrapper for Peep, Facebook and Flickr, and once you put it on a home screen you start all three of those apps/ networks to start updating. Go into the settings for each of these programs and turn updating off to prevent constant data network usage.

The EVO 4G has the unique front-facing camera for use in video chatting, and the apps to do that can cause a lot of network usage even when not active. Fring is such an app and it bears watching closely if used. It is critical to log out of the network when done calling, as otherwise Fring stays running in the background so your buddies can see if you’re online. Log out and close it for sure.

I see a lot of recommendations to use a good task manager to manually close apps when not needed to get better battery life. I used to be in that camp but had a conversation with an Android expert recently who set me straight on this misconception. According to this expert, Android 2.1 and up does an outstanding job managing tasks in the background and it should be left alone. Third party task managers used to kill apps actually interfere with the proper operation of Android, and should be avoided at all costs.

When I got the EVO I decided to take his advice and I have not installed any task manager. I must admit Android is handling tasks better than I could, and I have seen no reason to wish I had a manager. I believe that most people aggressively using a task manager to manually watch and kill background tasks would not have to do so if they set apps and system settings as I have indicated. My EVO is running smoothly all day, and Android is running things properly.

I am confident that with these simple steps any phone running Android 2.x will have better battery life. Those concerned that apps are not updating enough to keep everything up-to-date can rest easy that’s not the case. My apps and information is always accurate on my EVO, and my battery easily lasts all day with power left in the tank.


Chad Woolley

It is useless. It dies within 16 hours even if I KILL EVERY
PROCESS THEN TURN IT OFF AND DON’T TOUCH IT. I put on a processor monitor app which graphs the usage, and it runs at 10-15% WHILE DOING ABSOLUTELY NOTHING. Yes, GPS, WIFI, everything was off. No, I don’t have animated background or other silly crap.

Trust me, don’t get it unless you buy another phone to actually make calls when the EVO dies. I’m returning mine.

Chad Woolley

I felt slightly bad, and like I hadn’t done due diligence. But, I was right. The battery life on my EVO is crap. Barely 11 hours of life without using it AT ALL.

Here’s the data to prove it:

By contrast, my iPhone 3GS would regularly make it 2+ days with light usage. That ain’t fanboy, that’s facts.

James Kendrick

I don’t know what to tell you. I regularly get over 12 hours of very heavy data usage each day with phone calls thrown in. If you’re not happy them you should take the phone back.

Chad Woolley

Well, thanks anyway for the response. At this point I have no choice but to return it, or try another battery (which I’m reluctant to do, because I’m busy and I don’t want to waste my time, I just want a phone that works and lasts at least a day without being used).

It seems like different units have wildly varying battery life (again, not making me feel any better about this phone or its battery, especially in the long run).

I’d love to see some of the ‘lucky’ people with the non-lemon batteries run the same controlled test I did. What processes do they still have continually restarting with Advanced Task Killer on aggressive? Do they also see 95% of the battery usage on Cell Standby and Phone idle?

Cell standby: 63%
Phone idle: 32%
Android System: 5%

Then again, I guess if your phone and battery are so awesome, you couldn’t stand to just let it sit for that long and wait for the battery to die :)

Any suggestions for other Android phones which have great battery life?


1 thing that help me get mire than a day was updating my PRL in the, setting/system updates/update prl. For some reason my evo was constantly looking 4 a gsm connection 4 the sprint radio that never actually turns off. You’ve already returned I’m sure but there’s 2 many features on this little laptop 4me 2 take it back cause it wont go 4 2 or 3 days cause its 2 e z 2 put in a new $10 battery & charge the other on the cradle that comes w/it.


Some things on the evo sync in the background reguardless. There’s a popup thats says turning off background syncing will improve battery life but some applications will still work, so the phones never doing nothing unless in airplane mode or dat connection is off pretty much. W/that being said 16hrs is pretty good on 1 charge w/this type of phone cause it never stops working.


Very useful article… thanks!! My battery already last 2X with the first few changes.


One additional way to conserve battery life, for those of you who consume a lot of video, is to download Skyfire for your video browsing. Due to our ability to transcode video into Html5, and do the heavy lifting/compression on our end, this can dramatically conserve battery when compared video consumption with other browsers and optimized mobile video.


My battery life has improved enormously since the OTA update. I was experiencing about 4-6 hours, with minimal usage and 4G disabled, WiFi on and off throughout the day. Last night I forgot to plug in my phone, and after 24 hours, the battery indicator was still showing full charge! I’ve had WiFi activated the entire time, as well. I don’t know whether the problem was caused by roaming or the Facebook widget, or some other network management issue, but whatever it was, it’s fixed. I’m now getting better battery life on my Evo than I had my iPhone 3GS.


My battery life only lasts about ten minutes and I have tried a task killer but still does not help. can you please help me. thnk you

tom siegler

Ok, I’ve tried most of these ideas. But now the auto sleep for the screen stopped working? I’be reset the time to 15 sec bud minutes later the screen is still on. Or in the morning the lock screen is lit from an email notification. How do I turn auto sleep back on?


The easiest fix for the battery management is to turn off auto sync under settings. I had an average battery life of 4 hours pre. Now my phone can be on for 2 days before a charge while taking pictures, making phone calls, sending texts, and liberally using the internet.


I have found that turning the EVO off while charging seems to help the battery life issue for me. Leaving it on while charging overnight causes the battery to be half gone by midday, but turning it off while charging leaves me with more than half by days end with typical usage. No idea why – certainly defies logic, but try it. Same for wall or USB charge.

A. Tyrone Robinson

These are the results I posted on fb. I went from 4hr battery life to 22hrs.

Ok I won’t go into all of this will save your battery info that everyone has posted, because even after all that I was getting 4hrs and 6minutes on my phone. This doesn’t mean it doesn’t help, but for me the major issues I had with my phone made these changes have no effect. I will note that I do have my phone set to CDMA only and that is only because I don’t have 4G in my area so there is no need to have it set to CDMA auto. With CDMA only it still functions normally but did not help in lengthening the battery life.

Battery Left Widget: Two days ago John O’ Bryan posted information on how to see what if anything was draining your phone in the partial wake usage. Two want to get that information is to dial ##4636## which gets you to your phone settings. go to battery history, click other usages, click partial wake usage. It should tell you what is running all the time in the background and while the phone is sleep. For me the program was the media sd scanner. It seems the sd scanner would startup at launch and would not shut down and drained the battery considerably. Another way to get this information is to down load the Battery left widget from the apps store, Battery Left Widget, Go to History, Click on Other Usage, then Partial wake usage. It will give you the same information.

Unrevoked: unrevoked is an excellent app that allow you to root your phone (full access) without breaking your phone and voiding the warranty. The best thing about unrevoked is that it is a temporary root. So when you reboot your phone it goes back to the original lock position. In order to disable startup programs you have to root your phone. You can uninstall unrevoked at anytime.

Startup Manager: Download startup manager from the apps store and select that item not to run. If and when you need it, it will come up; this keeps it from staying up and dragging the battery of the phone. You will need root access on your phone in order to have permission to disable startup apps. Startup apps are programs that startup at the time of launch and run constantly in the background. Programs like Advance Task Killer and Tikl will write themselves to the startup list for your phone. Startup Manger gives you the ability to disable them from automatically starting up. You will still have access to the file but only at your discretion.

Advance Task Killer: I have been up in the air about this app for a while. It didn’t do anything for me as far as helping with the battery life. However I do see the benefits in having it to be able to close apps that won’t close in the background. I will save letting it kill on it’s own can be a bigger drain on the battery that what it was intended. But after these changes you should need to have it auto kill, just kill it manually.
I had already heard reports of people having 20hrs plus of battery life just off of these steps. Now that I am getting this type of power I am more app to play games and change others settings such as live wall paper and enjoy my EVO to the fullest.

Any questions feel free to message me.


Ronnie Santos

ATR, what about ‘force closing” some apps that are running? I ran thru a few in hopes that this would help- things like Sprint NASCAR, Sprint TV,Sprint Updates and Qik.

Ronnie Santos

I just read your article and found it to be very helpful- thank you. I’ve done some of the things you’ve done and found that after charging my phone up till 9pm lastnight, I woke up to find it to still have 3/4 charge. Now, that’s impressive considering before, it would have had less than that.Despite all of the limits with the battery, I still love this phone.

4g man

My Evo continually goes into roaming mode (even though I’m not roaming). I love the phone, but it keeps dying out. When is a more powerful battery coming?


i use the phone to stream music to my bluetooth headphones at work and i have found to get them to last nearly the whole 8 hrs i just turn off the data connection. I’m sure some people would hate that but while at work i really dont have much use for it since im sure there is nothing important i need to be updated about between 11pm-7am

i also have found playing with the settings improves the life a lot! before i did that i had the battery dieing on me after just a few hours!


I 100% agree with the advanced Task Killer comment. My local Sprint store actually installed ATK before they even handed me the phone and told me that Sprint Corporate was requesting them to do so to help on battery life, since they knew it was an issue and I went with it. After a bout a week I began having random restart issues so I began deleting apps, trying to narrow down the source while leaving ATK and using it as normal(pretty often). The phone continued to restart on its own and OFTEN. I decided to do a complete factory reset and I did NOT install ATK this time, no problems yet and I have been checking the running services and Android is running as smooth as ever! I just hope this issue doesn’t come back over time and that ATK really was the issue, but after hearing from more Android Experts so no to ATK’s I will not be re-installing as the phone runs fine without it! Thanks for the article!


Turn the sync down for facebook to once a day. Went from 6 hours of battery time to so far 19 hours. Makes a big difference.

Uncle Boo

After seven months of using Droid w/Android 2.x, I’ve found that one simple tweak is sufficient to make the battery last all day: turn off GPS when you’re not using it. The GPS sucks so much power that when using the phone in the car with the charger connected, the charger can’t keep up with the battery drain!

Regarding the article’s advice to turn of 3G when you’re using Wi-Fi: I can’t speak for all phones and carriers, but on Droid/Verizon, this happens automatically. Turn on Wi-Fi, 3g automatically goes away. Turn off Wi-Fi, 3G automatically comes back.

Android 2.1 (and, I assume, 2.2) includes a handy power widget to turn the assorted radios off and on. To add to a home screen: Menu > Add > Widgets > Power Control. The widget even includes a button to enable/disable screen auto-brightness (I suggest keeping it on; it works really well).

Regarding task killers: Android 2.x already includes a task killer called “Running Services” that works just fine for me. No need for a 3rd-party app which itself sucks power. For handy access, add the “Running Services” shortcut to your home screen: Menu > Add > Shortcuts > Settings > Running Services.

Also, I’ve found that some apps & services really hurt performance, even if they don’t consume a lot of power:
– GTalk. I don’t need it, so I always kill the service when it mysteriously starts up. (It also starts by default at power up; you can change this behavior in the Gtalk settings.)
– Auto sync. There is a system setting that sets default sync for all apps; you can then modify default of individual apps as needed. Go to Menu > Settings > Accounts & sync, and then check or uncheck Auto-sync as desired.



There’s a free Quick Settings app in the market that does a good job of putting numerous of these settings in one place …

Jim S.

Good tips James. I have an EVO and have been using the settings you mentioned since day 1 I can easily get a full day with moderate to heavy use with no problem. Today I was off the charger at 8am with internet browsing phone calls and Pandora and still had 45% at 11pm.

James Kendrick

As much as we bemoan it (until iOS4), the lack of multitasking on the iPhone has been strictly to avoid excessive battery usage. The more you run at one time the harder the battery is hit.

It will be interesting to see if we start hearing of iPhone 4 battery issues when it hits with multitasking.


iOS4 uses a pseudo-multitasking which is likely to have a significantly reduced, if not negligible, effect on battery life. Only certain predefined application “threads” will have access to true multitasking — like music playback for example. Thus something like Pandora will now be able to play while you do other things, which is not unlike the current music multitasking actually available already on the current iPhone.

Everything else will not be “true” multitasking, but rather a system of save-states that pause and save the state of tasks you have running, and then closing and re-opening as needed. Android actually does a form of this as well (when resources are needed), in addition to the true multitasking.

iOS4’s multitasking system will not be as flexible or powerful as Android, but on the upside, it should allow for most of what people need without the appreciable hit on battery life.


Does anybody else see a problem with getting a monster of a phone and having to turn off a bunch of standard stuff and reconfigure system settings to try to make the battery last? My wife and I both got the EVO and have both had battery issues. 4g is off bluetooth is off, GPS is on…. made about 5 or 6 texts to my wife, 1 phone call (10min) and checked the score of the Celtics game….. my battery was in the yellow by 2pm……. why come out with a cool phone like this and give it a weak battery…. I havn’t even played video on it or done some heavy web stuff….. I’m afraid too if I don’t have a power source around….. $200 for the phone and another $$$$$$ for a better battery………


I agree with some of what you’re saying. Unfortunately the thing we have to realize is that battery technology and innovation is lagging way behind mobile innovation. Believe me, I know how frustrating it is. I would love to leave everything on all day without having to worry about the battery.

Unfortunately that’s not possible right now. That’s why we have to manage all the apps that run on the EVO. There is no need for certain apps to refresh every 30 seconds or every 2 minutes. That’s why if you set it manual refresh, you will only get new data when you go to that app. This can drastically lengthen your battery life.

Try out the tips that JK recommended and if it doesn’t work out for you, return the phone. Luckily Sprint gives us all 30 days to see how the phone will work.


To answer both you guys, and add to what James said, you can indeed get a second battery, but it doesn’t have to be an EVO battery.

I recently picked up an Energizer XP8000. It’s an external 8000mAh pack about the size of a blackberry and weighs just 8oz. The beauty is that it works with ANY phone, meaning you can go through multiple phones and still keep your battery. It’s far more powerful than a second EVO battery, giving about 5x performance. Third, it can power devices other than phones, so if you have a MiFi device, ZuneHD or a netbook, this battery can power them as well.

Some may argue that a larger, extended battery may work in place of swapping two batteries. The problem there is that extended batteries make your phone fatter and heavier. It can also knock out the use of desktop cradles that cannot accommodate a larger back cover. The energizer XP8000 alleviates both those problem entirely.

If you happen to be on the go all day with a smartphone, MiFi device and a netbook, a single battery that can power them all makes for an extremely versatile solution.


CB, it’s a difference of philosophy. Android is built around the idea of user and programmer freedom. I’m not saying this philosophy is superior; it’s a matter of personal preference. That said, such a philosophy allows people and app developers to have more choice–choice in the kinds of applications they want to run and how, choice in the applications built and the features available, etc.

The downside is that this freedom allows for poor user habits and poor developers to make for potentially poor experiences: Programs that do not have clear/explicit protocols for background activity usage; users that are unfamiliar with the activity of the programs, etc. Because many users come from much simpler phones that “work”, this can be an unfamiliar burden for users. The onus should fall on developers to mitigate user inexperience, but this is hard too. Some developers are lazy or don’t have the necessary foresight to anticipate user problems. We could eliminate those apps or developers, but we go back to the original design philosophy of Android, and as is such, this will be a continuing challenge for Android.

There is an easy option for you if you feel like your personal philosophy does not align with this idea, and I don’t mention it disparagingly at all — but there is the iPhone. Apple’s philosophy is more that of a utopian society. Things work in the most simple and consistent way possible, and for most people, this is an extremely rewarding experience. It is designed to work as most people would expect with as little fiddling as possible. The downside, of course, is a reduction in freedom: the inability to multitask in the same way, a curated app store, features that only make it in whenever Apple decides.

These competing paradigms both have their advantages and flaws, and it’s up to the user to determine which better matches their personal profile.

***just to keep things relevant: I’m a big fan of tinkering with my phone, and it gives me more ownership of the device. With not too many configuration changes, I can tell you that when the phone goes off the charger at 8AM, I have battery run-time graphs (that I can share if anyone’s interested) that show only a 25-35% battery discharge twelve hours later.


25-35%? How have you gotten it to do that? Are you still talking about the Evo as well?


How do you get such good usage? I definitely want to know!


Are we still talking about the EVO? I am in the process of making a graph and I am at 37% after 7 hours. And this is with NO use of the phone and after I have already tried every optimization strategy known. The EVO is definitely one where “mileage may vary”


love to see your charts and any additional suggestions on keeping your evo running longer.


CB, it’s like @neoterix already said, there are different kinds of phones for different personalities. Some of us want pickup trucks while others prefer motorcycles. Nothing inherently wrong with either approach, unless you make the wrong choice and have to live with it until the lease is up.

In my case I decided that I really wanted both, so I got the EVO to satisfy my inner geek’s need for freedom, and the WiFi-only iPad to experience the elegant design of Apple’s hardware and ecosystem. I love both devices and the EVO’s hotspot feature means I get to use Sprint’s 3G/4G network with my iPad while my friend can’t get a signal on his iPad. (I eventually let him share mine.)


My fully charged EVO was totally discharging and turning off in 4-5 hours overnight, just by sitting idle. I started experimenting and one thing that I found that the major source of discharge was Bluetooth on. When I turned it off last night, and checked in 4-5 hours, the battery indicator showed 67%. Quite a lot of battery consumption for the idle phone, but WAY better, than before.


One note missed, is to let the battery charge at least 2 hours longer. You get more time out of it.

This is posted on Seidio’s website for batteries on cell phones.

Give it a try.


You mention not to use a Task Killer. I am somewhat new to Android, and wonder, how do you close an app that has no “Exit” button. I notice that I have a bunch of apps running after some use and my device actually begins to lag until I run a Task Killer to kill these apps.


The EVO is my first Android phone so I’m learning something new every day. But I have a lot of friends that are long-time Android users and every one of them recommends using an app killer of some kind.

Maybe 2.1 and 2.2 are smarter than older versions, but it doesn’t seem that way to me yet. An app called Battery Sentry monitors apps while the screen is off and alerts you to excessive battery consumption. I’ve gotten warnings three times so far. SystemPanel is an app that provides a lot of detailed information about the phone, and allows you to kill unneeded apps. Advanced Task Killer is the other one I’m testing.

Until someone can prove that it’s unnecessary, or actually harmful in some way, I’ll keep pressing the “kill apps” button occasionally when I’m holding the phone. It only takes a second and doesn’t seem to hurt.


EVO is like another generation of androids on its own. it’s too smart for an app killer. You dont need it.


Thank you very much for this, my x10i settings were all over the place, hopefully i can get a full day out of it now!


I was really concerned the first and second day since my battery would only last about 8 hours. That’s when I realized that GPS was always on by default. Once I turned GPS off I now get an easy full day of moderate use without the battery dipping into the yellow. Plus, weather apps and such are still able to track my location using 3G.


Thanks so much for this in-depth but straight-forward post. I bought my Evo on June 4, abandoning the ol’ Blackberry. I love it, but feel I need trusty sources of advice for becoming a knowledgeable user, just as I do with my “real” computer. So, since last Friday I’ve been searching for just such sources. Glad to have stumbled upon you (thanks to Bnet). Since the Evo is a computer, I think it’s important to learn and follow good operating habits, as well as aspire to learn all the ins and outs of tweaking our systems just the way we like them, and know how to troubleshoot. – just as we would for our desktops or laptops. So the task manager bit was eye opening. I will immediately stop abusing the one I installed in my Evo. Whew – saved just in time!

I think that’s the main difference between Android adopters and iPhone users – we actually want to understand our devices and be able to dig into them a bit.

Sorry for the rambling comment! It got a bit off track from my original intention to just thank you for the good info!


Thanks for the tips, a few of my settings were defitely incorrect.

You might want to check out our app: Battery Sentry - – It detects abnormal battery drain while your phone is idle and alerts you, giving you a chance to find the rogue app before your battery drains to 0%. Has saved me a couple of times :)


Agreed. I’m finding the Evo battery life to be just fine…lasts the day. I would say better than “fine” but I’ve only had the device for 6 days. Let’s see where we stand after 2 weeks of battery conditioning.

I have 4g off (none in my area,) Wifi off and Bluetooth on.


Great article James. I just made a number of settings changes as you suggested. BTW – I agree about the Task Manager apps. I used one and abandoned it quickly (uninstalled app & rebooted) as it seemed to bog things down. These apps are fine for occasionally monitoring which apps are running, but avoid using the “kill” features and let Android do its own work.


Good info. I may have to exercise my 1 yr upgrade option once 2.2 is made official for the EVO. There is a little voice nagging me that I should not have to do this much tweaking to manage the battery life. But, like yourself, I have never found the battery life on any of my smartphones to be that outstanding. I have always wound up with some amount of tweaking to improve it. Anyway, the tech-demon in me is shouting down that little voice. I feel weak ;)

James Kendrick

Android 2.2 has a built-in task/app manager which is very nicely done. You can force kill any task running in the background using the OS, as it should be.

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