2 things that surprised me about battery - EVO 4G General

1. having GPS and 4G on doesn't seem to have a very noticeable effect on battery drain when phone is idle. I typically lose about 1% every hour in idle no whether these features are on / off. I'm sure this would be different in an area without 4G... the radio would probably go bonkers trying to find a signal.
this is pretty good to know. not only do i love having instant access to these services, but it also allows programs like where's my droid to send gps coordinates back if the phone is lost.
2. a reboot usually takes 2% off my battery life. Once it took 4%! wth!
Haven't done any experiements with leaving wifi on yet but would be interested on others' experience.
oh some other basic info:
-running stock rom
-i use task killer set on manual to kill all the nonsense sprint crapware once at start up
-running push gmail
-turned off facebook, friendstream, favorites
-beautiful home widget updates q2h

Supposedly WiFi and GPS do not draw any power unless the app asks for it. The reason people still recommend to turn them off is that you might have an app in the background trying to use these services and drain the battery.

ramiss said:
Supposedly WiFi and GPS do not draw any power unless the app asks for it. The reason people still recommend to turn them off is that you might have an app in the background trying to use these services and drain the battery.
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I can tell you that unless the battery stats app lies, this is not true. Wifi draws 2% or so on standby.

Interesting, is that 2% per hour? I keep meaning to do some extensive testing but currently I am only going off what I've been told.
Edit: Just a thought....You don't have it set to notify you in case of new access points do you?

ramiss said:
Interesting, is that 2% per hour? I keep meaning to do some extensive testing but currently I am only going off what I've been told.
Edit: Just a thought....You don't have it set to notify you in case of new access points do you?
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If you don't set it to notify you then it doesn't auto reconnect to your existing hot spots. Also wifi is going to use power when it's on, but when you are connected to ask ap you are using less power than 3g.
Sent from my EVO using Tapatalk

Related

Juice Defender paid version

How many have actually bought this? Is it a huge increase in battery life? My phones battery life is really poor and I am wondering if this purchase resolves that. I use wifi all the time, like its on 100% of the time I am at home and such, even when Im not using it
Mark271 said:
How many have actually bought this? Is it a huge increase in battery life? My phones battery life is really poor and I am wondering if this purchase resolves that. I use wifi all the time, like its on 100% of the time I am at home and such, even when Im not using it
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Get Tasker instead. Same feature and much more
kolyan said:
Get Tasker instead. Same feature and much more
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I read that, is there anyway I can find out what to do with Tasker to save battery life?
Like, what are some awesome things with Tasker. I see people post but it is usually people really not know what to do and such.
Mark271 said:
I read that, is there anyway I can find out what to do with Tasker to save battery life?
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As far as battery goes, u can control brightness, wifi, gps, data, syncs, and bluetooth. I personally have custom time settings for brightness and screen timeouts, that's it.
kolyan said:
As far as battery goes, u can control brightness, wifi, gps, data, syncs, and bluetooth. I personally have custom time settings for brightness and screen timeouts, that's it.
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Could you say, turn wifi off after 2 minutes of screen time out, and turn on after 1 minute of screen on?
A lot of people are saying it uses more battery life, definitely not what I want.
Mark271 said:
Could you say, turn wifi off after 2 minutes of screen time out, and turn on after 1 minute of screen on?
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U can tell Tasker to do anything u want. Both Tasker and Juice Defender can drain battery if u configure them wrong.
Mark271 said:
A lot of people are saying it uses more battery life, definitely not what I want.
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It depends on how you use it. If you have Tasker using your GPS every 2 minutes (the default) to detect your location then yes, it's going to suck power.
I have mine set up to use the Near WIFI option to detect when I'm at work or home, and like you I leave my WIFI on all the time. It uses very minimal power.
Leaving WIFI on isn't too big of a deal. It goes to sleep after 5 minutes of the phone being off, and it pings out every so often to see what networks are there, but the power draw is minimal.
Last weekend I tested out Juice Defender to see how long my battery could last. 1d8h53m (~33hours) later my phone hit 10%. I plan on testing again this weekend with Juice Defender disabled to see what kind of difference there is.
I have used Juice Defender for about a week now and while I have found substantial battery savings I have also noticed that on its default settings it also causes issues for me. The main way juice saves battery is by turning off data services for 14 min out of every 15 min when the screen is off.
The problem I run into with this is that if you use gtalk or any instant messenger it will disconnect and reconnect you from those services. I have missed messages due to this. It also seems to affect the status of your friends on gtalk. My friends would always show offline until i sent them a message to "wake up the service" then they would show accurately until the screen went off again.
Overall for me the tradeoffs were not worth it. Also I was never thrilled with the idea of having to wait up to 13 min to get an email, push email should be instant.
Just my 2 cents
U can save battery by configuring brightness. Ex. I have auto brightness from 8-7 and min setting other times.
12 hours and my phone was dead with MINIMAL use, then I started to use switchpro to disable my data when im not using it. usually have my brightness about halfway down, and now my battery lasts 20 hours easy with alot of texting, a few calls, and games. I need to try tasker but this way works pretty well... if you haven't tried it yet

anyone that can help me with battery life?

thiis thing dies on me really quick, at home not as bad when I'm on wifi, but i left this morning from my house, and by the time I got to work 45 minutes later i'm at like 90% and i've done nothing on the phone, not a thing, no text, no voice calls. time without signal is 0.
then of course I get to work and time without signal jumps to like 22%, but still, my blackberry didn't go dead in half a day. i'm running the mixup undervolted kernal and the epic experience rom.
I do run gps and normal phone settings but turning them off is really not an option, especially for my wife that just needs a phone that works and isn't dead before she is out of work, and she doesn't even use the phone.
am I doing something wrong or is the battery life really this crappy?
and it was worse before the new kernal on DI18, and way worse before that.
i use the same set up i got 10 hours under pretty use
try turning gps off at work
So what are you leaving on? 4g? Gps? WiFi? I found that using black wallpaper helps.
wifi and gps are always on, it seems its TWS that is killing it. at like 22% right now. battery is down to 83% right now 2 hours off charger. no voice calls or text calls.
If you are getting a tws of 50% then put your phone into airplane mode for about 10 seconds and then switch it back, you will see a dramatic decease in tws
Sent from my SPH-D700 using XDA App
Here's a few things you can do ...
1) If you have Sprint service in most places, turn off roaming (Settings, Call settings, System select, Sprint). This will disable roaming period so that all roaming services are disabled (i.e. you won't ever see the data roaming guard).
2) Download JuiceDefender beta (this turns off all data, i.e. Wifi / 3G, whenever your phone's screen is off, if you purchase UltimateJuice with it, you can schedule it however you want, and you can choose to allow some apps to always allow data to go through). This saves me a LOT of battery since my screen is usually off.
3) Try the TWS hack mentioned in the earlier post, it should be fixed in DI18, but some people are still seeing high numbers there.
4) If you're rooted, get an app like Autostarts and disable the DRM service from ever running. This was found to be a battery killer.
The biggest battery drainer of them all is the GPS, and then 3G. If you can minimize your uses with those, you will maximize battery life. Also, use Wifi in areas that have it because Wifi hardly drains battery at all compared to 3G. I haven't seen any kernel really that gets much more battery life than stock, so doing these things will help. I love the Epic, but the battery life is a real downer for me too. I've gotten a full day's use (medium use) at times, while some days it hardly lasts at all.
Yes do the airplane mode trick and turn off gps if you are not using it and DO NOT USE JUICE DEFENDER i get 45 hours battery life without it. that app runs constantly in the background and uses more battery. Juice defender is for lazy people that dont know how to find these data and sync settings that are already on the phone or you can download an app that will let you toggle whatever setting you need. Set emails to sync once an hour and if it is really a priority then go into the email account and push refresh.
If you are really getting 45 hours of battery while actually using your phone then will you please share all of the settings that you have that give you this kind of battery life
Sent from my SPH-D700 using XDA App
Use SetCPU, it will turn down the processor while the screen is off. Helped alot with battery life. =)
itsmebryan said:
I found that using black wallpaper helps.
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I wondered if that would do anything. Considering how AMOLED works, dark themes and wallpapers *should* help battery life similar to reducing brightness.
Auto-Sync does some mean damage if your settings are too frequent, too. Try not to use Facebook/Twitter/Myspace integration, if possible, or disable them from syncing automatically, and sync them yourself when you feel the need.
Okay I don't know exactly what I did/didn't do but my battery problem seems to be greatly improved. Lets start with my details. Before 2 days ago. No matter what my use my battery drain would be approx 6-8% an hour. If I took my phone off the charger at 11am by 4pm I would be around 60%. GPS/4g/wifi off. Screen brightness set to lowest. tws not too bad. Using both the tws trick and drm stopped. Usually 2 or 3 phone calls 5-10 texts 5-10 minutes of browsing. I had a task killer installed but never used it to kill tasks just as an app switcher. Even after the di18 update no major difference. So the other day I downloaded an app called system panel. Another task manager. I deleted the task killer widget on my home page but no the app. The first day I took my phone off the charger used it for about an hour then put it back on the charger for about 15 minutes. When I took it off the charger it was at 96%. I opened system panel and killed all apps (necessary services/apps restarted immediately) did tws trick and drm kill. Same use as always after 8 hours my battery was at 80% a 16% drop. That's 2% an hour. The next day I deleted my task killer and over the same period of time I went from 96% to 83% (13% lose over 8 hrs) Only a little over 1% lose an hour. The only difference that I am aware of was the deletion of the task killer widget and then the app completely.
Sh0wNuF said:
If you are really getting 45 hours of battery while actually using your phone then will you please share all of the settings that you have that give you this kind of battery life
Sent from my SPH-D700 using XDA App
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Ditto, I'd like to hear what you're doing too ... even when I do not TOUCH the phone, I cannot get 45 hours. I think you're being a bit optimistic here.
Lmao No. Since di18 it has been great. I use my phone for a lot of stuff too. I have a live wall paper and rss feeds that update. email is set to once an hour. Now dont get me wrong if i play a game then it will suck my battery pretty good like 5% for ten minutes. i have a widget for sync settings. im rooted with ALL SPRINT apps removed i think thats the biggest thing. dont leave gps or other on if you are not using it. i do not have drm removed. i use full brightness. i talk a few times a day and dozens of text and web surfing. no juice defender or task killers. The object for me was to not have any unneccessary stuff run when it doesnt need to. so the phone is set to come alive when the screen is on not off. Check ALL APP and WIDGET SETTINGS FOR HOW OFTEN THEY UPDATE. I DO MEAN ALL. GO THROUGH EVERY APP AND CHECK THEIR SETTINGS ALSO the biggest drain is make sure you sign out gtalk or it will just constantly run. I shoulda posted my screen shot of battery life earlier sorry i will as soon as it reads 1d21h again. prolly tomorrow afternoon.... Rooted,cwm,galaxy rom and kernel, blue minimalism theme
jbadboy2007 said:
Yes do the airplane mode trick and turn off gps if you are not using it and DO NOT USE JUICE DEFENDER i get 45 hours battery life without it. that app runs constantly in the background and uses more battery. Juice defender is for lazy people that dont know how to find these data and sync settings that are already on the phone or you can download an app that will let you toggle whatever setting you need. Set emails to sync once an hour and if it is really a priority then go into the email account and push refresh.
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i do the airplane trick, problem is it seems,when im on wifi, the life is great, battery is perfect, as soon as you go to 3g, it goes to crap, plus the service where I work is spotty as well. I don't know what to do, seriously I can't go through 2 years of great cell service that I can't use because the battery is dead. I mean if I could get through 10 hours it wouldn't be bad, but as it is now, i'm lucky to squeak through about 8 hours. and I have the mixup kernal that is undervolted and supposedly already messing around with the cpu. usually on 3g, no matter where I am pretty much I"m at like 10-20% TWS.
tws is 50% for me. just stop the data with sync settings then it has no reason to draw more. my house and school have terrible service. you are only losing battery life due to data that is going really slow and it takes way more battery to accomplish. i keep wifi on all nite at my house but my sync settings are off. i do this so its not searching for 3g because i have an airrave and wifi. i used the di07 mixup and was not happy with it. galaxy roms have been the least buggy and very stable with the best battery life. That might be my opinion but also genius dog doesnt have an epic yet so i cant trust his stuff when he cant see the impacts with the kernels he is making. but he does know code i will tell you that.
robl45 said:
i do the airplane trick, problem is it seems,when im on wifi, the life is great, battery is perfect, as soon as you go to 3g, it goes to crap, plus the service where I work is spotty as well. I don't know what to do, seriously I can't go through 2 years of great cell service that I can't use because the battery is dead. I mean if I could get through 10 hours it wouldn't be bad, but as it is now, i'm lucky to squeak through about 8 hours. and I have the mixup kernal that is undervolted and supposedly already messing around with the cpu. usually on 3g, no matter where I am pretty much I"m at like 10-20% TWS.
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Holy crap 8 hour battery life is really bad.
Do you have any apps syncing? A weak signal with an app syncing can have a devastating effect on the battery life.
In my school building I get 0-1 signal bars and once I use the stock email app to sync my email every hour with 3G on my battery life is probably a third as good.
How?
jbadboy2007 said:
Yes do the airplane mode trick and turn off gps if you are not using it and DO NOT USE JUICE DEFENDER i get 45 hours battery life without it. that app runs constantly in the background and uses more battery. Juice defender is for lazy people that dont know how to find these data and sync settings that are already on the phone or you can download an app that will let you toggle whatever setting you need. Set emails to sync once an hour and if it is really a priority then go into the email account and push refresh.
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sent from my epic 4g with no 4g
only thing syncing is gmail, I refuse to stop syncing my email, otherwise whats the point of the phone? my blackberry could do push no problem, the iphone could do push no problem.
akei1 said:
Holy crap 8 hour battery life is really bad.
Do you have any apps syncing? A weak signal with an app syncing can have a devastating effect on the battery life.
In my school building I get 0-1 signal bars and once I use the stock email app to sync my email every hour with 3G on my battery life is probably a third as good.
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robl45 said:
only thing syncing is gmail, I refuse to stop syncing my email, otherwise whats the point of the phone? my blackberry could do push no problem, the iphone could do push no problem.
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Inside my building where I get a weak signal I turn off 3G and use the wifi to sync my apps regularly. I get a good wifi signal there.
If I can't get a good 3G signal in the building than there's not much I can do to my phone to make the 3G signal better (I think that's the cause for the battery drain).

Answers on battery life.

I've been seeing a lot of posts on crap battery life around here, and I was chasing my tail about some of them as well, following a lot of misinformation even by senior members. I think I have a good handle on it now, and picked up most of these tips from these forums, so I'm not taking credit for these ideas, just collecting them in one place. Some of my suggestions assume you have root and Rom Manager (see the Tips and Tricks sticky thread on how to get them).
1. If your battery drains in less than a day on standby, you probably have a bad flash of the JI6 modem (either from the OTA update or from a ROM). Flash the JI2 modem from here "www dot teamwhiskey dot com/home/downloads". If the flash fixes it, you may try going back to JI6 if you want, and it may stay fixed. I went back to JI2 and didn't bother going back to JI6, but it has worked for others. With JI2 and 3G on I get just over 24 hours in normal usage.
2. The #2 battery drain on standby is 3G. I turned it off (Settings/Wireless/Mobile networks/Network mode/GSM only) and my phone lasted for 40 hours on Edge with light usage (few phone calls, messaging, quite a lot of web surfing, 2 hours of podcasts). Didn't even feel too slow (I get 140kbps on edge). Can anybody suggest a really good widget for turning 3G on/off? I use the 2G-3G OnOff widget by Curvefish. It's not one-click, it's just a shortcut to Mobile Network Settings, but it works. Note that sometimes it takes a while for the data connection to re-establish after you see the 3G or E icon.
2.5. WiFi always on is a huge battery saver! It keeps 3g off. I can easily get 3+ days with light usage on my home wifi. Settings/Wireless and Network/Wifi Settings/Menu/Advanced/Wifi Sleep Policy/Never.
3. Don't need a task killer. I wasted all my time killing tasks trying to chase down my crappy battery usage, but since I fixed my modem and turned off 3G I know that the 3-5% CPU usage at idle does not hurt my battery. Taskiller for me was actually hitting the CPU constantly, lightly but for no reason, so I got pissed and uninstalled it.
4. Install a CPU usage monitor like Usage Timelines. It sits in the notification bar, very easy on the battery, but tells you if you have a rogue app pegging your CPU and draining your battery. These are the only apps you should be worried about killing. Astro File Manager has a task manager that shows CPU usage for each app, so you can kill the rogue one. I shoot for about 5% cpu usage at idle (at 200mhz - at 100mhz it would be a bit higher).
5. The app Autostarts lets you disable any app from starting on boot or other events like connectivity changes. This is not strictly necessary unless you have a lot of crap apps installed on your phone and they like to start themselves and waste CPU time behind your back.
6. If your battery reads less than 100% as soon as you unplug it from the charger fully charged, or your battery meter sits at 100% for a long time after you unplug it, you can recalibrate your battery meter. To recalibrate: 1) charge your battery to full, 2) unplug, 3) reboot into Clockwork Recovery and 4) Wipe battery stats.
7. There is No Such Thing as "battery reconditioning" (for all intents and purposes). The above procedure only RECALIBRATES you battery METER to read on a more linear scale between full and empty. It DOES NOT make your battery last longer, period. Whoever tells you that is a moron. If your battery is dying in 6 hours, doing any amount of calibration will not make it last longer (I've tried).
8. I wouldn't be too worried about undervolting, overclocking, kernel tricks and superawesomefast ROMS. The CPU drain at idle is so minuscule (as long as you don't have rogue apps) that those things make precious little difference. Like I said, the biggest drain is 3G and other radios. Having said that, I run Bionix 1.9 with the JAC kernel. It drained my battery in half a day at idle until I flashed the JI2 modem. With JI2 it suddenly started lasting over 24 hours, and once I turned off 3G, over 40 hours. I like this ROM and see no need to switch, it's very smooth. But you should be able to get similar battery life on a stock Vibrant.
9. I have GPS on, WiFi never sleep, auto-brightness, and a few widgets on like Weather and friend updates. I have no fancy settings, literally just turning off 3G (or wifi on, which is the same) got me 2-3 days. So I wouldn't waste time fooling around with magic settings (other than wifi never sleep), battery saver apps, etc.
10. If your screen is on all the time and you're playing games nonstop, you're draining your battery quicker than any of the things I mentioned above, so you probably don't care. In that case an optimized ROM/kernel is probably your best bet, especially JIT in Froyo. You can probably save on screen brightness as well.
If you guys have any other tips I'd be glad to add them to the list, but I hope this gives you an understanding of where your battery life is going. Basically: bad modem, 3G, or rogue apps.
Also, I hope this will put an end to trolls calling people whiners for complaining about battery life and saying unproductive **** like "you're a whiner" or "the Galaxy S is just a battery hog, live with it". It's not, you don't have to live with it, nobody should have to, here are your solutions.
Good luck.
A few things I do to help with battery life is:
Disable Audible touch tones
Disable Audible selection
Disable Haptic feedback
Disable SD card notifications
Set animations to NO animations
Uninstall media hub if you dont use it
Disable auto brightness adjustment
Disable power saving mode
I disable the last 2 and just swipe the notification bar to adjust brightness. Granted these items really only work when using the phone but I can go about 2 days of normal use without a charge believe it or not.
yeah disabling 3g has always been the best option for people really, really concerned with battery life.
But it's kinda hard to tell people not to use 3g on their brand new 3g capable devices.
You may want to add how to test if you battery is bad. If you use you phone repeatedly while it its plugged in you risk overheating and damaging your battery. Signs that unitas is the case are very quick drain and long (7 hours) charge times. You can easily test and see if your battery its damaged. Remove it from your phone and place on flat surface (e.g. Counter top) try spinning the battery. If it rotates easily and quickly you battery is bulging, this is a sign of damage. Time for a new battery.
Sent from my SGH-T959 using XDA App
Answer to #2-
Use APNDroid. Comes with a widget.
Thanks to the OP and other contributors in this thread.
I flashed a ROM with the ji6 modem and battery life has been noticeably ****ty since. Example - this morning I unplugged my phone at 7:30 am. 100% charged. It's 10:21 am and my phone is at 75%
In the last 3 hours I browsed the web for 10 minutes while having my coffee and a smoke before heading out to work. Blue tooth was on for my drive, and I've sent 2 text messages. Aside from that my phone has been on stand-by since I unplugged it 3 hours ago.
I'm going to try to flash back to ji2 tonight as the battery usage was definitely better. Will also look into the 3G thing.
Thanks again.
You forgot to mention the two DRM and one downloader services that run resident on JI6.
These were the cause of my reduced battery life after I upgraded. Killing & removing these processes restored my battery life back to normal
blink55184 said:
Answer to #2-
Use APNDroid. Comes with a widget.
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I just tried this - switching 3G off works fine, but switching 3G back on didn't work for me. I had to re-boot to get 3G back so this is a no-go in my case.
I know how to kill the processes for the DRM and downloader but how do I remove them?
OP thank you for putting together the list. But I've never seen the point of doing all this. Its like getting a lamborghini and only driving 40mph because it you don't want to waste gas, whats the point? Either get a second wall charger to charge at work or a car charger. Heck even get a second battery if you are out for a long period of time.
speoples20 said:
Its like getting a lamborghini and only driving 40mph because it you don't want to waste gas, whats the point?
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You don't need to disable 3g.
The point of my post is to avoid people wasting their time with tweaks that have little to no effect on battery life. I'm telling people that they're wasting time killing apps and optimizing cpu usage and twiddling their settings when the radio drains most of their battery on standby anyway.
Meaning no matter what changes you make, you can only hope to improve your battery life by a tiny amount, because any other effect is overshadowed by 3G.
Put another way, you will NEVER get battery life much longer than a day if you're on 3g, so you're wasting your energy trying all kinds of tricks.
blink55184 said:
Answer to #2-
Use APNDroid. Comes with a widget.
smutek said:
I just tried this - switching 3G off works fine, but switching 3G back on didn't work for me. I had to re-boot to get 3G back so this is a no-go in my case.
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For me the widget did nothing. But it seems like it's not even supposed to turn the 3G radio off, but ALL APN network traffic. Did I miss something? It won't save battery power as long as the 3G radio is on.
I went back to the 2G-3G OnOff widget by Curvefish. It's not one-click, it's just a shortcut to Mobile Network Settings, but it works. Note that sometimes it takes a while for the data connection to re-establish after you see the 3G or E icon.
Back to my Moto Startac
While i understand the idea behind this thread, your conclusion is simple.
If you use the phone as a smartphone, it will eat up your battery no matter what.
I personally go through two batteries and some a day. (they cost about 12 bucks in ebay, and they work just fine)
The price for saving battery is not using the phone, and having a 400 bucks phone just for show off is just silly at least.
If you have a phone like this is to use it. At least you can change the battery not like some other devices......
I understand that task killer is useless, but do any of you use Autokiller (memory manager) ?
That's kind of a redundant question because even if you do not use the app, your phone is still performing the functions. The app just adjusts the settings. But to answer your question, using a memory optimization tool such as AutoKiller is 1000% more efficient than using a Task Killer. I don't think it effects battery much, but works wonders on performance.
There's no 3g-off widget because apparently in Android there's no way to do that through a direct command. I also use the Curvefish widget, and you are absolutely right about turning off 3g to save battery. I normally do so when I'm asleep or if I'm sitting at my desk next to a computer (why do I need fast data on my phone when I have my computer right here?).
The other thing I would recommend is AutoStarts. There are way too many apps that open themselves up at bizarre and inappropriate times. Autostarts is an easy and painless way to see which apps do this and keep them from opening.
gagb1967 said:
While i understand the idea behind this thread, your conclusion is simple.
If you use the phone as a smartphone, it will eat up your battery no matter what.
I personally go through two batteries and some a day. (they cost about 12 bucks in ebay, and they work just fine)
The price for saving battery is not using the phone, and having a 400 bucks phone just for show off is just silly at least.
If you have a phone like this is to use it. At least you can change the battery not like some other devices......
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+1000
Great battery life comes to people who hardly use their phones. Guess I need to get a netbook. Will prolly get a netbook or 3g laptop + skype and ETF my phone soon. These battery woes are show-stopping.
Sent from my SGH-T959 using XDA App
Losing 4% an hour on standby when you're not using the phone is unacceptable. Samsung screwed something up with the JI6 update. Most people think it's because of the stupid Media Hub. I think they are right.
People are not complaining about the poor battery life from using the phone. They are complaining about the slow battery drain even when they are not using it. ~4% an hour adds up fast. Vibrant is supposed to have 450 hour (18 days) stand-by time. That's what is rated. But people are getting 24 hour (1 day) stand-by time after JI6.
Yellow C6 said:
Losing 4% an hour on standby when you're not using the phone is unacceptable. Samsung screwed something up with the JI6 update. Most people think it's because of the stupid Media Hub. I think they are right.
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I'm not ready to sign off on this idea. For me simply flashing JI2 over JI6 fixed it. For some people flashing JI6 back over still left the problem fixed. I still have those processes running on JI2 and my battery life is fine.
The other reason I'm not ready to recommend wiping out those DRM processes is that apparently it stops the bundled Avatar movie from playing, and might affect other things that users may get pissed about. I've read that killing the downloader process people are talking about kills the market. So I really wish those people advocating that solution would figure their **** out and provide exact steps for the fix (right now their posts are really vague like "kill the processes that are named something like this" and not well tested; in all my research I didn't find the exact name of the "downloader" process).
Is it possible to flash the ji2 modem without root? Wishful thinking, I suppose..

Juice Defender and Battery enhancing applications

Any positive reviews with Juice Defender ? I had it on my phone and used it on the extreme settings but didn't notice any difference even though it say it has improved my battery life by 1.68 times.
How do you make it really work ? Any tweaks and suggestions are welcome.
PS: Are there are more battery boosting applications out there that enhance the battery life ?
mjehan said:
Any positive reviews with Juice Defender ? I had it on my phone and used it on the extreme settings but didn't notice any difference even though it say it has improved my battery life by 1.68 times.
How do you make it really work ? Any tweaks and suggestions are welcome.
PS: Are there are more battery boosting applications out there that enhance the battery life ?
Click to expand...
Click to collapse
Is there any battery life boosting app that works?
I don't believe all the hype.. It runs in the background, so the apps itself is a battery drainer..
Sorry, but for me, lowering brightness, turning off 3g and mobile network when unused and also turning off haptic feedback helps increasing my battery's charge..
Of course these apps work. They turn off all radios when the screen is off, so, of course, they save battery.
Have you used this baby with radios enabled and the screen off? It gushes battery. With Juicedefender it looses very little battery when you're not using it (I should point out that the app will occasionally switch on the radio to get updates).
I recommend that you let JD manage your data and wi fi connections. It will intelligently use the radio that best saves battery. After some training, its like magic (it trains itself).
I've used several battery savers and I like Juicedefender best. It permits you to actually use the phone without disabling every damn facility and still get a day of use out of it.
Tried it once but use Green Power Battery Saver now, much prefer the easier UI
If rooted, along with LeeDrOiD 1.5.0 my battery life is amazing
bobbyelliott said:
Of course these apps work. They turn off all radios when the screen is off, so, of course, they save battery.
Have you used this baby with radios enabled and the screen off? It gushes battery. With Juicedefender it looses very little battery when you're not using it (I should point out that the app will occasionally switch on the radio to get updates).
I recommend that you let JD manage your data and wi fi connections. It will intelligently use the radio that best saves battery. After some training, its like magic (it trains itself).
I've used several battery savers and I like Juicedefender best. It permits you to actually use the phone without disabling every damn facility and still get a day of use out of it.
Click to expand...
Click to collapse
I turn off wifi when I'm not using it, but 3g is too much hassle and I suppose I do struggle to get much more than 24 hours out of a single charge but gushing battery?
bobbyelliott said:
Of course these apps work. They turn off all radios when the screen is off, so, of course, they save battery.
Have you used this baby with radios enabled and the screen off? It gushes battery. With Juicedefender it looses very little battery when you're not using it (I should point out that the app will occasionally switch on the radio to get updates).
I recommend that you let JD manage your data and wi fi connections. It will intelligently use the radio that best saves battery. After some training, its like magic (it trains itself).
I've used several battery savers and I like Juicedefender best. It permits you to actually use the phone without disabling every damn facility and still get a day of use out of it.
Click to expand...
Click to collapse
I think the phone does this without the help of additional apps. I'm losing only 1% per hour on standby with 3g enabled and auto sync. I did nothing special to the phone and I have no "battery saving" app. Does it, practically anyway, get any better?
Cheers from my DHD.
junta_mpb said:
I'm losing only 1% per hour on standby with 3g enabled and auto sync.
Click to expand...
Click to collapse
You get 100 hours out of this phone with 3G enabled and auto-syncing Facebook, Twitter, etc? You must have got one out of that batch of super-phones that HTC accidentally produced.
bobbyelliott said:
You get 100 hours out of this phone with 3G enabled and auto-syncing Facebook, Twitter, etc? You must have got one out of that batch of super-phones that HTC accidentally produced.
Click to expand...
Click to collapse
Lol
I'm trying green power at the mo.
What settings do you use for green power?
Mine settings:
Managing wifi and mobile network
checking traffic (0,1kB/s)
Starting at boot
Day Mode:
07:00 - 22:00
On 10min - Off 10min
On if power ON
On if screen unlocked
Night mode:
22:00-07:00
On 1min-Off 8h
On if power ON
On if screen unlocked
I don't see the need to use stuff like this. I unplugged mine this morning and I still have 85% left with some moderate use with Facebook on push, weather and e-mail on 1 hour and others on once a day or update when opened.
I should point out I am using the Cingular radio and Android Revolution HD 2.0.9 but even when I was on stock I didn't have a terrible drain unless I had HTC Sense syncing away to itself. That seems to be the key issue.
mngmng said:
What settings do you use for green power?
Mine settings:
Managing wifi and mobile network
checking traffic (0,1kB/s)
Starting at boot
Day Mode:
07:00 - 22:00
On 10min - Off 10min
On if power ON
On if screen unlocked
Night mode:
22:00-07:00
On 1min-Off 8h
On if power ON
On if screen unlocked
Click to expand...
Click to collapse
Managing wifi and mobile network
checking traffic (0,1kB/s)
Starting at boot
Day Mode:
6:30 - 02:00
On 1min - Off 10min
On if power ON
On if screen unlocked
Night mode:
02:00-06:30
On 1min-Off 1h
On if power ON
On if screen unlocked
I'm using the premium one though so there is a few extra settings. It definitely works though.
bobbyelliott said:
You get 100 hours out of this phone with 3G enabled and auto-syncing Facebook, Twitter, etc? You must have got one out of that batch of super-phones that HTC accidentally produced.
Click to expand...
Click to collapse
You may be missing the "on standby" part of my post that refers to the one made by another poster. The point is, I think the phone already disabled unneeded functions without the need for an app. My phone doesn't have unbelievable battery life, but it doesn't suck either.
Anyways, I think "battery saving" apps just end up using more power.
Cheers from my DHD.
I have dissconnected phone from computer on Sunday 7 pm. Started Juice defender. About three hours of reading comics, about 30 minutes phone calls, email few times a day and some internet/market (about 1/1.5 hours) and on Tuesday, 2 pm, I still have 34% battery. There was some music playing for about an hour and video clips for same time. Great result in my opinion. I think Juice defender works great. At least very good.
JD is alright, its not stellar but it does help (for me and my settings and usage). It will help a lot better if you purchase Ultimate Juice, that's when it starts to be interesting but that's the thing, you'd have to purchase it before you discover if its the best solution for you.
I don't think there's one app that will universally make our battery life better. The apps will help if you could make its functions play well with your settings and style of usage. Short of saying that if you find an app that will enhance your battery saving habits and capitalize on the opportunities that your phone can save power, then that'll be the best option for you...
JD is alright, UJ makes it a lot better...
It looks like it is better solution then buying extra bettery. Good job. I am gonna try it for some more time and if the effect will be the same I will get the UJ. Thanks.
junta_mpb said:
You may be missing the "on standby" part of my post
Click to expand...
Click to collapse
No, I didn't miss that part. This phone does not drain at 1% per hour with 3G and syncing enabled - in standby or not in standby. It just doesn't. And there are newbies reading this forum who might believe your figures.
bobbyelliott said:
No, I didn't miss that part. This phone does not drain at 1% per hour with 3G and syncing enabled - in standby or not in standby. It just doesn't. And there are newbies reading this forum who might believe your figures.
Click to expand...
Click to collapse
It does. I sleep for 8 hours, I lose 8%. I think its supports the argument that the phone only uses resources when needed. Since it doesnt sync the entire time and only when its scheduled to, I dont see this is as an impossible figure.
Lets try to remember the context comments are presented in this thread.
Android Assistant 2.2
Hi all, I would like just let you know, I tried a lot of apps for improving battery life, incl. Juice defender, and I must say the best one I tried is Android Assistant 2.2 build 15, after few settings I can say is really the best : full auto sync on gmail + company mail + weather, screen on 10%, screen off after 30s, gsm only, mobile data always-on, playing tank hero and few more games couple times a day, phone calls 30 - 45 minutes per day, 10 - 15 text per day, GTalk always on - and using quite a lot, wifi is on from 7.00 pm till 12.00 am, vibration always on, and result Full 2 days without any problems and overnight no any limitations, if I am using limitations overnight and not playing so much, and no wifi, battery will make easy 3 full days...
m7svk said:
Hi all, I would like just let you know, I tried a lot of apps for improving battery life, incl. Juice defender, and I must say the best one I tried is Android Assistant 2.2 build 15, after few settings I can say is really the best : full auto sync on gmail + company mail + weather, screen on 10%, screen off after 30s, gsm only, mobile data always-on, playing tank hero and few more games couple times a day, phone calls 30 - 45 minutes per day, 10 - 15 text per day, GTalk always on - and using quite a lot, wifi is on from 7.00 pm till 12.00 am, vibration always on, and result Full 2 days without any problems and overnight no any limitations, if I am using limitations overnight and not playing so much, and no wifi, battery will make easy 3 full days...
Click to expand...
Click to collapse
Sorry but I can't find it on the market. Is the app's name correct?
mngmng said:
Sorry but I can't find it on the market. Is the app's name correct?
Click to expand...
Click to collapse
Original name is "Android assistant(12 features)", by Aaron, he done already few apps for improving battery life, very good app incl cache cleaner and few more extras.

Battery tip for people with bad battery life.

I've had bad battery life since I bought this phone on release day. I would get no more than 1.5-2 hours screen on time. The battery wouldn't last more than 12 hours. I've been messing around with it since then but still had bad battery life up until the last few days. Now I get 3.5-4 hours screen on time and I'm a moderate user.
Here is what I did:
1. Go to Google maps and then go to settings and untick anything that is ticked then click on "location reporting" and set it to do not update your location.
2. Go into the phone settings>location services and untick everything. When you want to use maps just turn on gps.
3. Get the app "battery calibration". First charge your phone to 100% and keep the charger plugged in and then go to the app and Press calibrate. Then use your phone till the battery is dead (turns off) and plug the charger in and let it charge to 100% while it is off.
Turn it on and then use it till the battery is dead again and charge while off to 100%.
I'm not saying this is guaranteed to work for you but it has for me.
You know my problem is I did that and when on Jb lib battery drain like crazy.Back on ICS no problem with battery can you explain that why on ICS calibration is not needed ???
Sent from my GT-I9300 using xda premium
---------- Post added at 10:48 PM ---------- Previous post was at 10:48 PM ----------
goose2515 said:
You know my problem is I did that and when on Jb lib battery drain like crazy.Back on ICS no problem with battery can you explain that why on ICS calibration is not needed ???
Sent from my GT-I9300 using xda premium
Click to expand...
Click to collapse
O end yes maps drain battery I turn this off
Sent from my GT-I9300 using xda premium
uf21 said:
Up until now I had bad battery life since I bought this phone on release day. I would get no more than 1.5-2 screen on time. The battery wouldn't last more than 12 hours. I've been messing around with it since then but still had bad battery life up until the last few days. Now I get 3.5-4 hours screen on time and I'm a moderate user.
Here is what I did:
1. Go to Google maps and then go to settings and untick anything that is ticked then click on "location reporting" and set it to do not update your location.
2. Go into the phone settings>location services and untick everything. When you want to use maps just turn on gps.
3. Get the app "battery calibration". First charge your phone to 100% and keep the charger plugged in and then go to the app and Press calibrate. Then use your phone till the battery is dead (turns off) and plug the charger in and let it charge to 100% while it off.
Turn it on and then use it till the battery is dead again and charge while off to 100%.
I'm not saying this is guaranteed to work for you but it has for me.
Click to expand...
Click to collapse
First two items I agree on. GPS uses up a lot of battery, though from personal experience, it didn't dent my battery too much anyway as long as I don't have running apps using it.
But the last point. I believe those battery calibrations are actually useless. There was some article from the android team describing why.
The 2nd and 3rd are completely useless.
People who use gps know that even if you tick those location services, it only gets enabled when an app requires gps. Thua, battery is only lost if you use loads of navigation services. Unchecking those won't do any good.
Battery Caliberation is just what you can call the perfect reading that is shown on your status bar. Ultimately, whether you caliberate or not, battery gets charged upto 100% only. It won't surely exceed that.
Sent from Hell!!
uf21 said:
I've had bad battery life since I bought this phone on release day. I would get no more than 1.5-2 hours screen on time. The battery wouldn't last more than 12 hours. I've been messing around with it since then but still had bad battery life up until the last few days. Now I get 3.5-4 hours screen on time and I'm a moderate user.
Here is what I did:
1. Go to Google maps and then go to settings and untick anything that is ticked then click on "location reporting" and set it to do not update your location.
2. Go into the phone settings>location services and untick everything. When you want to use maps just turn on gps.
3. Get the app "battery calibration". First charge your phone to 100% and keep the charger plugged in and then go to the app and Press calibrate. Then use your phone till the battery is dead (turns off) and plug the charger in and let it charge to 100% while it is off.
Turn it on and then use it till the battery is dead again and charge while off to 100%.
I'm not saying this is guaranteed to work for you but it has for me.
Click to expand...
Click to collapse
A better idea:
Disable auto sync for accounts
Disable GPS (and wifi gps)
Disable auto backup of Gmail account
Set wifi sleep policy to “when plugged in”
Disable motion
Check your apps settings and disable useless background sync​
Setup a static IP via your router.
I had issues with Chrome Sync - when enabled it prevented phone from going into deep sleep. So if you use Chrome and struggle with battery life this is one more thing to look at ...
Official Facebook app uses a lot of power and waking device for many times. Use browser for facebook or alternatives...You will see the diference !
Darkside Agent said:
A better idea:
Disable auto sync for accounts
Disable GPS (and wifi gps)
Disable auto backup of Gmail account
Set wifi sleep policy to “when plugged in”
Disable motion
Check your apps settings and disable useless background sync​
Click to expand...
Click to collapse
good list id like to add:
freeze unused apps/battery hogs if used sparringly (with titanium backup)
set wifi to always on, switch off manually when not in use
firewall apps that dont require internet
I agree on the Facebook app. I will charge my phone to full, reboot it, and then let it sit overnight without using any apps and it will be one of my top processes in better battery stats. I really like using facebook simply for the picture and phone number syncing. I guess I could always go back to haxsync. On my Galaxy Nexus since I can't use facebook app to sync I just use mobile page and it definitely is better on battery life.
I've been trying to improve my battery life on 4.1.1 LIB as if I leave it on Wifi overnight with no use after reboot and full charge I'll see Deep Sleep at maybe 90% if I'm lucky. I'm losing almost a full hour of sleep time over the course of 7-8 hours. I think Facebook is part of it, also it seems to be worse when I use the S3's built in alarms.
Go into Settings -> Location and disable everything? You mean that we should disable:
1) Use wireless networks (location determined by wi-fi and/or mobile networks). I really don't see how this saves battery.
2) Use GPS satellites. This uses up battery ONLY when an app requires GPS (and when the icon shows).
3) Use sensor aiding. See above.
4) Location and Google Search. (only used to get your location when you're connected to GPS and/or wifi/mobile network).
I really don't see how this saves battery.
On a side note, one might want to freeze unwanted apps, not use too many live wallpapers, sync only when needed, and get rid of unwanted widgets. THAT might help.
Better tip. Use your phone with everything turned on as it was designed like I do and get 4 hours + screen on time, and 1 to 2 days useage depending on how much it's used.. simples...
I really don't see the point of buying a phone like this and turning everything off!
Google now won't work properly with all the location stuff switched off.
I always get through the day with everything turned on, in use power saving at work and switch off wifi that's it.
If the battery runs down have a back up waiting, galaxy s3 owners are always going on about it being good that our phone has a removable battery and iphone doesn't but there are still many people not happy that their battery runs down quick!
Sent from my GT-I9300 using xda premium
The best thing I ever spent on for this phone was the official samsung battery kit. At least I don't have to worry about the battery at all and I can leave all the features on.
Sent from my GT-I9300 using Tapatalk 2
The best app to see exactly what's happening on the phone is "Better Battery Stats".
I can have access to all partial wavelocks and see exactly what app is sucking my battery like a vampire on a virgin.
Companies creates amazing devices but forgot to create the amazing batteries that go with them!
DeadSOL said:
Go into Settings -> Location and disable everything? You mean that we should disable:
1) Use wireless networks (location determined by wi-fi and/or mobile networks). I really don't see how this saves battery.
2) Use GPS satellites. This uses up battery ONLY when an app requires GPS (and when the icon shows).
3) Use sensor aiding. See above.
4) Location and Google Search. (only used to get your location when you're connected to GPS and/or wifi/mobile network).
I really don't see how this saves battery.
On a side note, one might want to freeze unwanted apps, not use too many live wallpapers, sync only when needed, and get rid of unwanted widgets. THAT might help.
Click to expand...
Click to collapse
Yes that's true but this is not for everyone. I don't use Google now and why should I use wireless networks when there is a built in GPS.
Thank you OP. That was the problem with my phone. Now its awake when the screen is on. Before that, it was awake every 5 minutes. !!!!
And after you've turned every single feature off, you can stand back and admire your Nokia 3310
boundy said:
And after you've turned every single feature off, you can stand back and admire your Nokia 3310
Click to expand...
Click to collapse
You're only turning of location services. Why does the phone need to know where you are 24/7? Just turn it on when you need to use maps or location. Not hard.
My car was designed to be driven, does that mean it should be left on while I'm not using it? Think about that.
terranoid said:
Thank you OP. That was the problem with my phone. Now its awake when the screen is on. Before that, it was awake every 5 minutes. !!!!
Click to expand...
Click to collapse
Glad I could help.

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