[Q] Battery life/kernel question - EVO 4G Q&A, Help & Troubleshooting

I am currently using CM7 RC4 and have been reading through the CM forum for tips on how to improve my battery life. I must admit that I have tried various kernels (CFS and BFS as well as SBC and non) but nothing seems to really make a difference.
I average about 6 to 8 hours of battery life with light to moderate use. The most time I spend really using the phone is for the 2+ hours when I go to the gym and use Pandora. Besides that, I send some texts, browse the web and use Facebook. I know that there are a lot of variables when it comes to interpretation over how much use of a phone is "a lot" but still.........I hate how quickly my battery drains.
In one instance, I went to bed at 1 a.m. with 99% charge (having been off the charger only 30 minutes) and when I woke up at 8:30, I was already down to 57% with high Cell Standby as well as Android System.
I have now gone through and done the change on my phone to set the radio to "CDMA Only" as well as disabling Auto Sync.
I am currently using SavageZen Kernel CFS 0.2.1 and will report back on how it does overnight but.....definitely not holding my breath.
Any helpful tips are appreciated.

BatmanCia said:
I am currently using CM7 RC4 and have been reading through the CM forum for tips on how to improve my battery life. I must admit that I have tried various kernels (CFS and BFS as well as SBC and non) but nothing seems to really make a difference.
I average about 6 to 8 hours of battery life with light to moderate use. The most time I spend really using the phone is for the 2+ hours when I go to the gym and use Pandora. Besides that, I send some texts, browse the web and use Facebook. I know that there are a lot of variables when it comes to interpretation over how much use of a phone is "a lot" but still.........I hate how quickly my battery drains.
In one instance, I went to bed at 1 a.m. with 99% charge (having been off the charger only 30 minutes) and when I woke up at 8:30, I was already down to 57% with high Cell Standby as well as Android System.
I have now gone through and done the change on my phone to set the radio to "CDMA Only" as well as disabling Auto Sync.
I am currently using SavageZen Kernel CFS 0.2.1 and will report back on how it does overnight but.....definitely not holding my breath.
Any helpful tips are appreciated.
Click to expand...
Click to collapse
First, make sure you've done this: http://forum.xda-developers.com/showthread.php?t=712990
Also, turn off your back up data to Google servers in settings > privacy.
I've had it off for a good 5 hours or so and my battery life has already drastically improved.

To be honest dude, without an extended battery man that's about the best you're going to get. I consider myself a moderate-heavy user and I work from 8am-5pm. My battery is unplugged at 7am and when I get off at 5pm its on about 20% on my way home. I've tried just about EVERY rom(aosp/sense) along with EVERY kernel combination out there. I browse web, constant text, twitter, Facebook, email, maybe a game and I've never witnessed anything greater than what I posted above. No matter what people say to you about how great their battery life is or how its been running for 18hrs its all BS(w/ reg battery). Yeah if your phone is sleeping 90% of the time then yeah its believable, but for users like us 6-8 is about the best with a normal battery. Now a buddy of mine has the sprint extended battery; dude uses the hell out of his phone and can honestly say his phone last about 17 hours of power usage.
My tip would be to invest in an extended battery if you want more than 6-8 hrs.
Sent from my PC36100 using XDA Premium App

Lol this is far from the truth. I avg 18-20 hrs with moderate use.
dirkyd3rk said:
To be honest dude, without an extended battery man that's about the best you're going to get. I consider myself a moderate-heavy user and I work from 8am-5pm. My battery is unplugged at 7am and when I get off at 5pm its on about 20% on my way home. I've tried just about EVERY rom(aosp/sense) along with EVERY kernel combination out there. I browse web, constant text, twitter, Facebook, email, maybe a game and I've never witnessed anything greater than what I posted above. No matter what people say to you about how great their battery life is or how its been running for 18hrs its all BS(w/ reg battery). Yeah if your phone is sleeping 90% of the time then yeah its believable, but for users like us 6-8 is about the best with a normal battery. Now a buddy of mine has the sprint extended battery; dude uses the hell out of his phone and can honestly say his phone last about 17 hours of power usage.
My tip would be to invest in an extended battery if you want more than 6-8 hrs.
Sent from my PC36100 using XDA Premium App
Click to expand...
Click to collapse
Sent from my HTC Evo running CM7

@swaze
Define moderate use! My screen on my evo gets turned on like every 5 or 10 mins while wifi usage sits at 40% and the screen is constantly at 50%. My phone lasts me through work with pretty moderate/heavy usage(7-9 hrs) and I'm happy with my battery simply because it's not going to get better(regular batt). Now if your display never gets passed 20% then you're not using your phone buddy.But, if you're using a REGULAR battery and you're actually getting 18 hours feel free to post pics or no one cares to hear about this make believe 18 hours. Please do share how you actually use your phone; how are you achieving such great results cause as of right now you're just one of those randoms who come in and say **** like" durrrr I get 18hrs on my phone, but I post no pics to back it up". PICS OR IT DIDN'T HAPPEN
Sent from my PC36100 using XDA Premium App

The best option I could suggest would be search E-bay for a 3500 MaH extended battery. They run about $.01 with about $9.99 shipping from China. If you need help I can send you a link to one of the auctions. Also make sure things like auto-brightness isn't enabled and that things are syncing a ridiculous amount of times per day. Good Luck.

Ive been running CM7 for a couple weeks battery life started going down hill fast.
My fix was to get new HTC battery for $7 on Ebay problem solved.

Just try turning the Google backup off.

I get from 10hrs to 15 but I turn off the day when I'm not using it and have my CPU set to run a at different speeds
Sent from my PC36100 using XDA App

Bro I bought a 3500+ battery from eBay and it lasts me about the whole day, this is with the exception with 3G on and heavy texting, moderate browsing and heavy and I mean "heavy" application use during the end of the day. On other days when I'm not texting I'm watching videos on youtube with the 4G on, this last for about 30 - 60 minutes top!. So whats my point? Say thing like you said, "My tip would be to invest in an extended battery if you want more than 6-8 hrs."
pictures Below :

Im not sure what kernels are being used that are tossing out such ruff battery life but SavagedZen-1.0.0-CFS-HAVS-WiMAX-GB-noSBC is treating me right.
Simple performance setting in CM changing governor can get the job done adding many hours of extra battery life.
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Smartass setting is great performer to say the least power packed battery saver.

Not sure if apps available but it would be nice if governor had timer settings were user could set what governor they want to run at what time automatically.
Example would be after 11pm power-save governor kicks in then returns to Smartass from 7am - 12pm etc.
If such apps available...maybe I'm missing setting in CM someone please let me know

sling said:
Not sure if apps available but it would be nice if governor had timer settings were user could set what governor they want to run at what time automatically.
Example would be after 11pm power-save governor kicks in then returns to Smartass from 7am - 12pm etc.
If apps available...maybe I'm missing such setting in CM someone please let me know
Click to expand...
Click to collapse
Closest you're going to get to that is setcpu man. It does just about everything you just mentioned. There's a donate version in the market and a free version that the dev puts up for xda users try google search you'd find it in a heartbeat.
Actually I'm feeling nice. The latest version is 2.1.1.
http://forum.xda-developers.com/showthread.php?t=505419
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dirkyd3rk said:
Closest you're going to get to that is setcpu man. It doesn't just about everything you just said. There's a paid version in the market an a free version that the dev puts up for xda users try Google search you'd find it in a heartbeat.
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Click to expand...
Click to collapse
Right on used app in the past but didn't get to deep into it.
Maybe CM will add feature stock simplifying it.

sling said:
Right on used app in the past but didn't get to deep into it.
Maybe CM will add feature stock simplifying it.
Click to expand...
Click to collapse
Actually I'd say its pretty simple enough in cm7 and I think it should probably stay that way to be user friendly to the not so savvy rooter lol. But above you stated you wanted more control of your kernel pretty much; setcpu gives you total control. You can set a diff governor profile for diff actions(plug, unplug, screen off), battery percentages, etc. I'd say give it a shot.
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Related

What sort of battery performance are people seeing?

So I've had my Defy a week and I like it, more than I thought I would to be honest.
However, one thing that's bugging me is the battery life.
In their review, Engadget actually highlighted the battery life as one of the big plus-points of the Defy.
They state:
Engadget said:
In our experience, the Defy seems to have stellar battery life, which is relatively hard to come by among Android phones. Not only we were able to consistently make it comfortably through an entire day on a charge, but we were surprised to find that after putting the phone away with about 75 percent charge, it was still on with 21 percent remaining two days later. Granted, it spent most of that time in WiFi calling range (which disables the cellular radio), but many smartphones give up the ghost from 100 percent charge in less time...
Click to expand...
Click to collapse
Now, I'm not using wi-fi calling but I don't think that should excuse or explain the fact that my phone barely lasts a day when at least one other handset has such significantly better battery life.
Anyway, I was just wondering how everyone else's Defys were performing.
Im coming from a vibrant and the battery on this is the best on android so far that i've ever used(g1, mytouch, mytouch 4, vibrant, etc.
Sent from my MB525 using XDA App
If you don't mind me asking though, how long do you go between charges?
As I said, I'm lucky if I make it much more than a day - certainly two days isn't possible.
But I'm not a particularly heavy user, a bit of internet and a few texts here and there but very little in the way of calls, so I kind of feel like I should be getting more out of the handset.
When I check the battery usage, it's quite often ~40% each for 'Mobile Standby' and 'Phone Idle'.
So the vast majority of the drain is just from the phone being on, not from anything I'm actively doing.
Is this your first smartphone? =)
I go a day and a half or so. I'm heavy on web use and playing 'slice it' all day.
for my usage, im THRILLED to have a phone that can still have 30-40% at the end of a long day.
Sent from my MB525 using XDA App
Just try to reboot the phone after fully charged and detached from power. There is an issue with the "suspend" process in some cases (not only on Froyo 2.2) which disappears after rebooting. Mine lasts 2-3 days with average use.
The issue at Google (I am not allowed to post links as a new user )
code.google.com/p/android/issues/detail?id=11126
I can use the web steady for 5 hours, this includes some streaming video, if I start at 100% its down to 10% by then. At work it lasts easily all day but it gets little web usage and maybe an hour of talking. I use battery booster and advanced task killer, my backlight is set at 70%.
With moderate use (some calls, lots of texts, some web browsing) I get 2 days. It needs to be charged at the end of day 2, but I'm happy with it. I don't have any ot the social networking crap on so it's not constantly syncing. I think that may have something to do with it. I keep my backlight way down too.
Battery life? i got defy just a week ago and first impressions are good. You know, in the first days you make yuor phone working a lot, testing all the features, trying new apps from the market (so internet connection always on) , watching some movies, playing 3d games!
So a really heavy use, but power lasts at least 1,5 days. So i think using the phone moderately makes the battery life easily up to 3 days.
Try some task-killer app, and then test the power duration. Some softwares stay in background and keep draining power.
disturkis4u said:
Is this your first smartphone? =)
Click to expand...
Click to collapse
No.
And I don't see what that's got to do with anything.
My battery life seems to be noticeably poorer than what the majority of people here are quoting.
If I were to use the web for 5 hours, there's no way I'd have anywhere near 30-40% of my battery left.
shaftenberg said:
Just try to reboot the phone after fully charged and detached from power. There is an issue with the "suspend" process in some cases (not only on Froyo 2.2) which disappears after rebooting. Mine lasts 2-3 days with average use.
Click to expand...
Click to collapse
Having looked at your link, it sounds as though when that's happening, people can see the Suspend process listed in the break-down of what's using the battery.
I've never seen it listed, so I'm not sure that's the problem here.
xdaid said:
Try some task-killer app, and then test the power duration. Some softwares stay in background and keep draining power.
Click to expand...
Click to collapse
I've got Spare Parts installed and it's set to 'aggressively' monitor and kill processes.
A friend recommended it over the likes of Advanced Task Killer because it's supposed to be better at differentiating between apps that are safe to kill and parts of the core software/system that could cause issues if closed.
I get what you're saying about using the phone more than normal because it's new but in the 8 days since I got it, I've spent 7 at work, so I haven't had that much scope to mess around with it.
I've switched the screen from automatic brightness control and I've disabled the background syncing for facebook, so hopefully that'll make a difference.
If not, since it's just over a week, I'm well inside the 28 days I can have it swapped for being faulty.
Quadrant: 1100 points, Linpack: 6,49 Mflops
Edit: ooops, should read the title more carefully next time.
My defy runs for about 40 hours on one battery charge.
i have to charge mine everyday at night after using it whole day, time to time. Not bad tbh.
A task killer is NOT necessary.
It seems like blur services are push rather than pull which uses much less battery (think blackberry). But im not 100%.
I've set up yahoo, corporate, facebook, and picasa just to test it out and it didn't make much difference in my battery life.
I consistently get a day and a half (unless i play games). Can push to 2 days if i put on airplane mode overnight.
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Found this on a german forum, as you can see, he was not in flight mode. I guess my desire's battery won't last that long.
I can go about one full day with moderate/somewhat heavy usage. Won't last 2 full days though.
disturkis4u said:
A task killer is NOT necessary.
Click to expand...
Click to collapse
People keep saying that but I'm not convinced.
I mean, if I use my browser say and then finish using it and know I won't need it again for a while, why prevent me from actually closing/killing it?
It seems so ridiculously counter-intuitive.
Plus, if it's really not necessary, then why are so many of them being developed?
Even Samsung are producing task managers now for devices like the Galaxy Tab - if it really wasn't necessary, surely one of Google's top hardware partners would know that.
And samsung is so great at making stuff...? Touchwiz??
Also, samsung's task killer does not show inactive or background apps like most task killers do.
What is the harm in the browser being open? It uses no cpu+ this phone has more than enough ram that it doesn't need you to close apps to keep things running smoothly.
It also will not improve your battery if you arbitrarily close an app only to re-open it later and use more processes.
Just my 2 cents on this topic.
Sent from my DEFY using XDA app
disturkis4u said:
Touchwiz??
Click to expand...
Click to collapse
Blur?
They're no Sense, either of them, that's for certain.
Yeah they're nowhere near being that bloated lol
Step666 said:
Blur?
They're no Sense, either of them, that's for certain.
Click to expand...
Click to collapse
Sent from my DEFY using XDA app
Something i already posted in a german forum about my battery life:
2,5h gaming (Zenonia),
3h mobile internet (ICQ, Yahoo-mail, web, market)
2h of activated WLAN and deactivated sleep to copy stuff from pc to Defy
1,5h music (radio)
and 1h (and 6 minutes lol) of phone calls
After that day, i still had 30% of battery.
The maximum i reached were 75 hours including MY normal use with some mobile internet, some texting and 1 or 2 calls...maybe an hour of gaming at most.
I did not charge it first when i got it, because the battery was at 80% already/still and i wanted to play around.
Current running time: 26 hours...i activate plane-mode at night from now on. Low 70s now.
Everything at minimum display brightness (30%?)
Step666 said:
People keep saying that but I'm not convinced.
I mean, if I use my browser say and then finish using it and know I won't need it again for a while, why prevent me from actually closing/killing it?
It seems so ridiculously counter-intuitive.
Plus, if it's really not necessary, then why are so many of them being developed?
Even Samsung are producing task managers now for devices like the Galaxy Tab - if it really wasn't necessary, surely one of Google's top hardware partners would know that.
Click to expand...
Click to collapse
In my opinion, a task killer is absolutely necessary.
All the apps launched keep consuming RAM even if they're not in use. I brought back 106 mb last time i performed a task killing! In most of the cases less ram means worst performances / more work for cpu.

[Q] Terrible battery no matter what... anyone else?

I've had 3 or 4 different evo's and it's been almost impossible to receive decent battery life on almost any rom. It started with CM6 and I switched even though I loved it and went to Baked Snack or some other rom that stated battery life, but it just always ends up dropping on me no matter what. I thought my expectations were too high, I just recently got my last replacement and it's now 3-4 days old. I heard how CM7 and Miui's latest had excellent battery life so I couldn't wait to test them. I first tried CM7 and as long as it's on stand by or not being used the battery was pretty decent I guess. That's with Green Power free running btw. when I turn the phone on to start using it, the percentages just drop. Tried Miui after hearing how good the new battery life is and almost the same thing.
So, that led me to believe it was due to some program, but for the most part I keep these stock. One of the first things I setup are a Gmail account, FB account setup... then of course my apps are added automatically hardly any widgets ever run. If anything it's Buzzbox, I've got beautiful widget's clock now. I use Vlingo, not sure if it's a hog. When I check the battery stats, there's nothing crazy or out of the ordinary. Anyways... there's got to be something wrong, I'm guessing. I've got a regular battery and an extended battery and they both do terrible. I'm going to install a rom from scractch with nothing loaded at all and test the battery. I hate to do that, because testing will take awhile especially with adding one program/widget at a time to monitor the percentages lost.
Here's a list of apps I normally have on my evo and run occassionally:
Vlingo
Green Power Free
Juice Defender (before green power and GB)
handcent
buzzbox
facebook
Swype
Google Services
Voicemail
Are any of these battery abusers without me knowing it?
I normally keep wifi on and connect to it over the 3g data, although I believe Green Power said it cant control the data on the GB roms as of now.
Today, I started with 98% with my extended battery, CM7 and now at 1:00PM I'm at 70% Minimal usage.
Sorry for the long post.
Bluetooth is off most time and Wifi like I mentioned usually is on, because I heard it uses less power than mobile.
sorry for the long post.
Just looking for some assistance.
Restore it to stock.
Calibrate your battery.
Use it for a few days without installing all your apps. If the battery still sucks, then you are probably going places that do not have signal and the phone is searching a lot. Check About - Battery for time without signal.
get a seidio 3500 mah battery and you will enjoy your phone with every little feature turned up to the max
iitreatedii said:
get a seidio 3500 mah battery and you will enjoy your phone with every little feature turned up to the max
Click to expand...
Click to collapse
I've got a regular battery and an extended battery and they both do terrible
Click to expand...
Click to collapse
It is a Seidio
Of course it's not as bad as the original, but watching the batter go down 10% while I'm using it is very disheartening. Awhile back, I was able to get decent battery life, but I can't remember what rom, it might have been Baked Snack like 1.6 lol, guessing anyway.
iitreatedii said:
get a seidio 3500 mah battery and you will enjoy your phone with every little feature turned up to the max
Click to expand...
Click to collapse
what kind of use do you receive with yours? What rom/kernel as well.
Try my rom with ziggy I've getting great reviews from my rom users nets 4.3 works great for my evos today as of now stock 1500 10.5 hours 34% extended 3500 10.5 hours still in the 90's stock had my maps on all day literally and extended barely touched it will post screenshots in a few
Stock
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Extended
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Nuggyunlimited looks like he is onto something. I do not know if he has 4G or not?
I have had my best luck with mikFroyo.
What is going on with google maps? I have the same problem wiht MikFroyo
I am one of the heaviest users around, I stream pandora for about 8 hours , listen to music app about 2 to 3, check facebook and certain websites constantly, my two email acounts check every five minutes, my brightness is at 100 percent, my gps and location services are on, I'm overclocked...using 4.3 mikfroyo with sbc number 7...at the moment I'm using miui with sbc 7 for aosp roms, depends what you do, but either way no matter what kernal or rom you use I'll tell you, this battery will last you all day, this battery changed my evo experience...
edit: I don't use setcpu for profiles, just for overclocking, i dont use juice defender, the useless task killer or anything
edit 2: Conductive i had the same problem update to 4.4 or 4.3
conductive said:
Nuggyunlimited looks like he is onto something. I do not know if he has 4G or not?
I have had my best luck with mikFroyo.
What is going on with google maps? I have the same problem wiht MikFroyo
Click to expand...
Click to collapse
4g works with my rom and I've been using it most of the day I'll look into it for ya
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iitreatedii said:
I am one of the heaviest users around, I stream pandora for about 8 hours , listen to music app about 2 to 3, check facebook and certain websites constantly, my two email acounts check every five minutes, my brightness is at 100 percent, my gps and location services are on, I'm overclocked...using 4.3 mikfroyo with sbc number 7...at the moment I'm using miui with sbc 7 for aosp roms, depends what you do, but either way no matter what kernal or rom you use I'll tell you, this battery will last you all day, this battery changed my evo experience...
edit: I don't use setcpu for profiles, just for overclocking, i dont use juice defender, the useless task killer or anything
edit 2: Conductive i had the same problem update to 4.4 or 4.3
Click to expand...
Click to collapse
Lol sounds like my average use but I use it even more
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nuggyunlimited said:
Lol sounds like my average use but I use it even more
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Click to expand...
Click to collapse
so let me get this straight, average use is 8 hours of pandora, 8 hours of sleep, and that leaves 8 hours for facebook and etc, so lets say 4 hours total for a guesstimate, leaving 4 hours of non activity of the phone being off. 20/24 hours is "average use". I mean this is not a competition of who uses theyre phone more, all im saying is that with this battery you can do pretty much whatever you want without caring with ANY rom or ANY kernal you want.
iitreatedii said:
so let me get this straight, average use is 8 hours of pandora, 8 hours of sleep, and that leaves 8 hours for facebook and etc, so lets say 4 hours total for a guesstimate, leaving 4 hours of non activity of the phone being off. 20/24 hours is "average use". I mean this is not a competition of who uses theyre phone more, all im saying is that with this battery you can do pretty much whatever you want without caring with ANY rom or ANY kernal you want.
Click to expand...
Click to collapse
No I use my bluetooth headphones for music from around 8am-6pm entire time I leave the house to the time I get home. Both facebook accounts every 15 minutes same with both.twitter accounts on xda off and on all day I.text a lot and use g talk a lot with a few calls I wasnt posting it as a battle I was actually just saying we get about the same times but I use the phone a little more and I was agreeing with you that the battery works wonders
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i just got my evo after a hero.
the battery life is exactly what i expected. ive got a stock sense, rooted with clockwork.
i dont use widgets, no auto syncs. i have complete control over my device and it never leaves my hand. that being typed, i can get about 13 hours of up time.
yes, id like the battery to last longer but im not willing to have a fatty evo for the 3500mAh battery. I purchased a second stock battery, official HTC, so if Im gonna have a long day, ill have a battery with me.
nuggyunlimited said:
No I use my bluetooth headphones for music from around 8am-6pm entire time I leave the house to the time I get home. Both facebook accounts every 15 minutes same with both.twitter accounts on xda off and on all day I.text a lot and use g talk a lot with a few calls I wasnt posting it as a battle I was actually just saying we get about the same times but I use the phone a little more and I was agreeing with you that the battery works wonders
Sent from my PC36100 using XDA App
Click to expand...
Click to collapse
o okay i was just making sure, i was confused, and yeah, we seem to be heavy users, i cant kill a stock battery in 2-4 hours no joke
iitreatedii said:
o okay i was just making sure, i was confused, and yeah, we seem to be heavy users, i cant kill a stock battery in 2-4 hours no joke
Click to expand...
Click to collapse
Cool lol I just can't go through the day without music and I believe you pandora itself would kill a stock battery in about 4 hours I got a extended rugged case so the phone doesn't look funny with the big back lol
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Ok, yesterday I loaded Miui with nothing additional except changing the LCD density to 200, green power (which is useless since wifi doesn't work with this kernel) and right now I'm at 14h, 49m since unplugged with 17% left (normal battery). That's with minimal to average use. I notice when I'm using it, I can watch the percentages just drop, so I guess it's functioning normally and it's due to just my usage and programs, I'm probably expecting too much from my battery, once again I guess. I'm going to try your rom next with my extended battery.
I know what stock battery users go through, and with heavy use they don’t last too long, but I’m now in a different, horrible place entirely and I have the 3500 mAh battery!
I know that something is clearly wrong with my Evo but no one seems to know what it is. As I said I’m also using a 3500 mAh battery, but not to any advantage. In fact I get considerably less usage with this now then I used to get with the stock 1500mAh battery, regardless of the ROM or kernel.
Current specs:
HTC EVO 4G, Hardware 0003
16GB Wintec Class10 MicroSD
SEIDIO 3500mAH Battery/Camera Protector
Calkulin's EViO 2 v1.7.7 (have run several different Sense and CM ROMs)
HTC kernel #15v7 (doesn’t matter, have tried stock and every TM, regular and SBC)
Quadrant ≈ 1365
Linpack ≈ 33.05 MFLOP
and…(drum-roll please)
Battery Life: 70% after 6 hours, literally next to no usage.
Before middle of last November, if I charged the phone fully (without the benefits of SBC), and then just unplugged it on a Saturday night and let it sit unused for like 19-hours, the charge would be around 89%, +/- 1%, with the stock battery. In that same scenario now the 3500 mAh battery would have shut the phone down long before 19-hours rolled around.
Yesterday, using the 3500 mAh extended battery, no phone calls, Bluetooth on for about 20-miutes this morning for the drive to work and was turned off upon my arrival, and I’ve sent and received 4-5 messages on GTalk. That’s it.
The current status:
Charge: 70%
5h 52min unplugged
Up time: 6:15
Awake time: 1:20
Battery Usage screen:
Cell Standby: 42%
Phone Idle: 43%
Android System: 8%
Bluetooth: 4%
Display: 3%
Phone runs great; everything works great, no other issues. It once fell about 10”-12” onto plush carpet (kitten attack). It was in the Sprint case with the stock battery then, and has not been dropped otherwise. If anything, I am ridiculously careful with it.
Something happened the middle of last November like a switch was flipped, and battery life has been horrible ever since. Since we got our Evos back in the very beginning of June, 2010, I don’t think that returning it to the Sprint Store was an option then or now.
No one seems to have seen anything like this or have any clue what the issue might be, but it was suggested that I RRU it back to original, update it to current and then test the battery usage. Then, basically just live with it and see if it helped. After that, I’ll re-root and get on with life, whether battery life is better or not.
Any constructive thoughts are welcome. Thank you for your time.
Note: my apologies is this constitues a thread hijacking; not my intention, just saw title of the thread and it sounds like my life.
nYdGeo said:
I know what stock battery users go through, and with heavy use they don’t last too long, but I’m now in a different, horrible place entirely and I have the 3500 mAh battery!
I know that something is clearly wrong with my Evo but no one seems to know what it is. As I said I’m also using a 3500 mAh battery, but not to any advantage. In fact I get considerably less usage with this now then I used to get with the stock 1500mAh battery, regardless of the ROM or kernel.
Current specs:
HTC EVO 4G, Hardware 0003
16GB Wintec Class10 MicroSD
SEIDIO 3500mAH Battery/Camera Protector
Calkulin's EViO 2 v1.7.7 (have run several different Sense and CM ROMs)
HTC kernel #15v7 (doesn’t matter, have tried stock and every TM, regular and SBC)
Quadrant ≈ 1365
Linpack ≈ 33.05 MFLOP
and…(drum-roll please)
Battery Life: 70% after 6 hours, literally next to no usage.
Before middle of last November, if I charged the phone fully (without the benefits of SBC), and then just unplugged it on a Saturday night and let it sit unused for like 19-hours, the charge would be around 89%, +/- 1%, with the stock battery. In that same scenario now the 3500 mAh battery would have shut the phone down long before 19-hours rolled around.
Yesterday, using the 3500 mAh extended battery, no phone calls, Bluetooth on for about 20-miutes this morning for the drive to work and was turned off upon my arrival, and I’ve sent and received 4-5 messages on GTalk. That’s it.
The current status:
Charge: 70%
5h 52min unplugged
Up time: 6:15
Awake time: 1:20
Battery Usage screen:
Cell Standby: 42%
Phone Idle: 43%
Android System: 8%
Bluetooth: 4%
Display: 3%
Phone runs great; everything works great, no other issues. It once fell about 10”-12” onto plush carpet (kitten attack). It was in the Sprint case with the stock battery then, and has not been dropped otherwise. If anything, I am ridiculously careful with it.
Something happened the middle of last November like a switch was flipped, and battery life has been horrible ever since. Since we got our Evos back in the very beginning of June, 2010, I don’t think that returning it to the Sprint Store was an option then or now.
No one seems to have seen anything like this or have any clue what the issue might be, but it was suggested that I RRU it back to original, update it to current and then test the battery usage. Then, basically just live with it and see if it helped. After that, I’ll re-root and get on with life, whether battery life is better or not.
Any constructive thoughts are welcome. Thank you for your time.
Note: my apologies is this constitues a thread hijacking; not my intention, just saw title of the thread and it sounds like my life.
Click to expand...
Click to collapse
Thats crazy my extended has on for 2 days 4 hours only used it for a hour and the battery is @ about 80% your. Your awake and bluetooth time are low your battery shouldn't die like that it might be the battery seidio.should replace it sounds like you've tried everything in the book
Sent from my PC36100 using XDA App
nuggyunlimited said:
Thats crazy my extended has on for 2 days 4 hours only used it for a hour and the battery is @ about 80% your. Your awake and bluetooth time are low your battery shouldn't die like that it might be the battery seidio.should replace it sounds like you've tried everything in the book
Sent from my PC36100 using XDA App
Click to expand...
Click to collapse
Thank you for the input. I thought about that so I tried the 3500 mAh in my wife's stock Evo and it runs forever. I'm so envious! I've swapped her stock battery and mine and they both run the same in either phone.
In mine, the stock battery usage is proportional, too. Fully charged and unplugged at 6:00 AM and with absolutely zero usage, sleeping screen off the entire time, by around 2:00 PM the stock battery was at 41%. That was also with very minimal synching (I've tweaked those settings nicely), no bluetooth, etc. I believe that the awake time was like 36mins. Sick, but unfortunately not in a good way.
Since it can't hurt, I think that I may do the RUU thing this weekend and then re-root afterwards. It may not help, but its literally the only thing that I can think of that I haven't tried.
Again, thanks for your thoughts. Have a great day!
nuggyunlimited said:
Thats crazy my extended has on for 2 days 4 hours only used it for a hour and the battery is @ about 80% your. Your awake and bluetooth time are low your battery shouldn't die like that it might be the battery seidio.should replace it sounds like you've tried everything in the book
Sent from my PC36100 using XDA App
Click to expand...
Click to collapse
Sorry, I've bypassed your rom for so long, but I've got it loaded now. Looking forward to trying it out. I can't lie I love and miss CM7 and Miui, but if my battery seems to last longer with a sense rom, then I'll be switching. So far it is very snappy and quick. Do you recommend I stick with the stock kernel or switch to something else? Do you use any setcpu, juice defender, green power or anything?
Do you have theme's as well?
Updating a titanium backup for my apps now.
I'll post back how it goes. I would say I had the same problem as the user above, but this has happened on mutliple phones and roms.
I know with a new phone you need to cycle the battery quite a few times. Someone told me roms were similar, even though I never understood why. Would you say that's true? In order to give the rom time to adjust to the battery and settings you need to give it 3-5 days?

sbc kernel battery fried???

so i was using cm7 with tiamat 3.3.5 sbc kernel and noticed that my phone wasnt charging as fast. it basicly got to the point where it was losing battery while it was plugged in so i tried updating radios and that only gave me terrible data speeds i could not fix. i ended up unrooting and it fixed my data speeds but my phone wont charge still. the green charger icon doesnt change it stats at one bar. has this been seen before? is there a fix? or did i mess up my battery by knowing the risk of sbc and still using it.
Stock charger? stock usb cable? Stock battery? have you tried other batteries? Other chargers? need some info here.
Prepare to get flamed for suggesting that sbc may have caused it.
Sent from my PC36100 using XDA Premium App
It could be your usb port, it's a fairly common problem. Mine came loose, I took it to Sprint & they gave me a new one.
glad i didnt get flamed. thanks for your help i tried a friends stock charger and usb cable and it charged. been charging it and all looks good. what a relief as it doesnt seem to look like its the battery. i had lost my htc usb cable that came with the evo and bought a replacement by belkin. this has to be it, i just didnt suspect it as i just bought this cable like a month ago! thanks for the heads up, glad the sbc kernel was not the problem.
what i find weird though is that i tried my friends phone with my charger and her phone worked. now i tried my charger on my phone and it charges again. now i dont know what the problem is.
Aosp roms suck stick to Sprint lovers with HTC kernel I get better battery life with that than a sbc kernel 20 hours today moderate almost heavy use
Sent from my PC36100 using XDA Premium App
blackroseimmortal09 said:
Aosp roms suck stick to Sprint lovers with HTC kernel I get better battery life with that than a sbc kernel 20 hours today moderate almost heavy use
Sent from my PC36100 using XDA Premium App
Click to expand...
Click to collapse
wow... that comment was.... umm.... how do i describe it...
uneducated?
blackroseimmortal09 said:
Aosp roms suck stick to Sprint lovers with HTC kernel I get better battery life with that than a sbc kernel 20 hours today moderate almost heavy use
Sent from my PC36100 using XDA Premium App
Click to expand...
Click to collapse
i really do think aosp roms are not as stable and something must have happend. i might try that rom, or mikfroyo 4.61 as i had that before. i just want to be able to theme the status bar to black
If you don't like AOSP ROMS just don't use them.
But don't sit here and bash them, people spend a lot of time building them for you all for the hefty price of FREE.
mattykinsx said:
If you don't like AOSP ROMS just don't use them.
But don't sit here and bash them, people spend a lot of time building them for you all for the hefty price of FREE.
Click to expand...
Click to collapse
yea i would def not say aosp roms are bad by any means, but for the most part i think people might agree sense is usually more stable. i love aosp and its usually all i use but with this scare i might not even root my phone for a bit. as soon as i do its probably back to cm7
psiklone said:
yea i would def not say aosp roms are bad by any means, but for the most part i think people might agree sense is usually more stable. i love aosp and its usually all i use but with this scare i might not even root my phone for a bit. as soon as i do its probably back to cm7
Click to expand...
Click to collapse
maybe try Deck's as well. I use that and love it. It's a lot more vanilla than CM7, but I love it.
http://forum.ppcgeeks.com/cdma-htc-...m-gingerbread-evo-deck-rc10-horse-stable.html
blackroseimmortal09 said:
Aosp roms suck stick to Sprint lovers with HTC kernel I get better battery life with that than a sbc kernel 20 hours today moderate almost heavy use
Sent from my PC36100 using XDA Premium App
Click to expand...
Click to collapse
What's moderate use? I'm tired of everyone claiming moderate use 10 hours 20 hours it's a load of garbage...I'm lucky to get 20 hours on a 3500 battery...I'm sorry that you look at Facebook twice a day play a song send 3 texts, make a phone call and call that moderate use but I actually use my phone instead of bragging about what kernel gives me all this standby battery life. No matter what you use heavy, light, moderate, even though I hate using those words, no kernel will give you the benefit of a true 3500 battery. Yes you can undervolt under clock etc but it will not make a huge difference. I'm sorry but no one with a regular battery is getting over 10 hours on their phone if they actually use it...run a test for me if you disagree...call you house and leave it on the call, see how long from 100 percent it takes to drain...you'll see it eats away just as bad as pandora. My stock battery sits in my draw, it's sh*t...
blackroseimmortal09 said:
Aosp roms suck stick to Sprint lovers with HTC kernel I get better battery life with that than a sbc kernel 20 hours today moderate almost heavy use
Sent from my PC36100 using XDA Premium App
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Okay, you're blaming SBC for destroying your battery. People who never use SBC have this problem all the time...statistics indicate that you're initial diagnosis of your problem is wrong. Assuming that, let's move forward.
Likely candidates:
1. The microUSB plug on the phone is broken: take it back to Sprint.
2. The charger itself is malfuctioning: buy a new one.
3. The battery is old and/or defective: replace battery.
Before doing anything irrational (like blame your problems on SBC), try a different charger, a different battery and trying your battery and charger on a different phone. If it charges with a different charger: the charger is the problem. If it charges with a different battery, the battery was messed up (NOT SBC'S FAULT). If none of it works, the most likely thing is the charging port on the phone is broken, then it's time to take a drive.
Now, ehem, my pedestal please:
If SBC was a real problem that caused real screw ups in user phones, then far more than 10-15 people would be experiencing problems. Many of us have been using SBC kernels since January with absolutely no problems at all. In fact, just the other day, I got 34 hours of battery life on an SBC kernel (stock battery, moderate use). No overheating, no battery malfunction, no charging issues...ever. Not even a hint of it. So, before you blame a piece of software programming that you don't understand, you should know it's far more likely that the battery died, that you yanked the charger cable out wrong on accident or that things just grow old and die than it is that a piece of software is responsible for taking out only a dozen batteries while thousands of users remain unaffected.
It's like saying there's a flu epidemic when only 20 people out of 1000 are sick. 20 people out of 1000 are sick anyway, relax, it's not SBC.
iitreatedii said:
What's moderate use?I'm tired of everyone claiming moderate use 10 hours 20 hours it's a load of garbage...I'm lucky to get 20 hours on a 3500 battery...
Click to expand...
Click to collapse
Yes, I used moderate use. I send between 200-300 texts a day, check and update my facebook and Twitter semi-frequently (10-12 times in a 12 hour period) A little angry birds here, a little SNES emulator there. I don't get a lot of phone calls. Reading news articles out of my rss feeds (usually while going to the bathroom or bored at school...10 articles a day), I am an avid and frequent FourSqaure user and I sign in any chance I get (which means my GPS is almost always on) and I check every last e-mail I get from 3 addresses (2 Yahoo!, one Gmail). Plus, other things I may have forgotten.
With no mods, hacks, no custom roms or other tampering, I get about 5-7 hours. To get better battery life, I do a variety of things, like turning mobile data off when not in use and using an SBC kernel. Not leaving my display on when I don't need it, static undervolting, etc.
Now remember, there's a few levels above moderate. Such as: moderately heavy, heavy, very heavy. You, with your 20 hours of battery life on a 3500, are obvioulsy a very heavy user. If you don't believe my usage is moderate, then maybe you should write a guide for all of us describing what moderate, low, heavy, etc usage is so people don't make you so mad.
thats the proble, theres no such thing, its all opinionated, i can name what i feel is moderate, you may or may not agree, bottom line is that you will not get a smooth, flat agreement on what is what, turning off mobile data is cheating IMO, leave that on at all times to get a regular number, if i turn mobile data off with 10 percent on a 3500 battery, i can go for hours on end, thats really not a solution since you wont recieve emails or updates until you turn it back on...
psiklone said:
what i find weird though is that i tried my friends phone with my charger and her phone worked. now i tried my charger on my phone and it charges again. now i dont know what the problem is.
Click to expand...
Click to collapse
Corrosion build up on the contacts. Probably it built up on either the phone, or the cable. Trying different phones may have cleared the contacts.
Its proly the usb cable, mine was doin the same thing a while ago
Sent from my PC36100 using XDA App
Yeah I always have my phone clocked to one 1 ghz max and min with a cheap 3500 mah battery I got it off of eBay for like $20 came with 2 batteries and a charger and what I do is go on the internet a lot and listen to music a lot make calls and text not a lot and am still sitting on 20 hours a day a best depends on the day.
Sent from my PC36100 using XDA Premium App
Wow some people on here are rude this is a forum not English class. Speak your mind about the topic not about how bad someone's grammar is.
Sent from my PC36100 using XDA Premium App
Must have been battery gnomes...
1. Destroy batteries
2. ???
3. Profit

Does anyone use 4G on all day and get good batt?

Want to get a small survey. Do you guys leave 4G on all day and only 4G, no JuiceDefender or radio tricks and get good battery?
Post your results please!
I use Setcpu for screen off and underclock to 1.35 GHz and average 12 hours allowing 4g to stay on throughout my day.
Sent from my SGH-T989 using Tapatalk
I've been getting about the same battery length whether I'm on 4G only or WiFi+EDGE - which is around 6-8 hours. This is without additional battery-saving techniques.
i get around 8-9 hours if i leave 4g on....... without it 12+
what settings do you have on setcpu i have it downloaded but i haven't used it on this phones tips will help
Yes 4G on, no JD help, no wifi relying. My buddy's Droid bonic has the extended 2880 mah battery and I'm darn jealous, keeps LTE on and lasts a day streaming google music all day. This is obviously the perfect setting we all want, fast 4G, sync on, blistering powerhouse, no compromise usage.
I've got a profile during screen off for 384mhz/192 powersave
Main is 1350/192 ondemand. Phone remains smooth and usable.
Sent from my SGH-T989 using Tapatalk
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I am amazed with this phones battery life. I am coming from a droid incredible and that thing died every 20 min. I am a light user and stock as you can get, not even rooted. (yet) This phone will last me about two days on one charge.
Sent from my SGH-T989 using XDA App
i leave my phone in 4g and wifi all day and i get batt plus for a good 4 hrs im listen to mp3 player threw bluetooth... i will say i rooted my device and removed most of tmobiles apps apps that i dont use that are always running
I'm really shock today, picked up an exchange yesterday and today I'm getting over 15hrs with 4G on and fully stock and I still have 33% left. This is with a few calls, music streaming and texting.
First unit I would get around 8-10hrs.
So yeah, I'm a happy camper, lol.
Sent from my SGH-T989 using xda premium
That's really good and your initial numbers are more in line with the majority of the members here. I wonder if its ether phone itself or the battery. :-T
im surprised as well i leave everything on and the phone is still alive all day. have 4g on, sync, stream, web, text, couple calls, screen brightness set to automatic.
i think if i do some battery saving techniques i could push 2 days/
been on for 13 hours and still have 26%.
way better than the 8 - 10 hour max on my vibrant.
havent had to worry about charging my phone on at all
htc2364 said:
I'm really shock today, picked up an exchange yesterday and today I'm getting over 15hrs with 4G on and fully stock and I still have 33% left. This is with a few calls, music streaming and texting.
First unit I would get around 8-10hrs.
So yeah, I'm a happy camper, lol.
Sent from my SGH-T989 using xda premium
Click to expand...
Click to collapse
What was your reason for exchanging?
Sent from my SGH-T989 using Tapatalk
Wow, there has to be some issue causing some of us to only get 8 hours out of a battery and others getting 13+. Starting to make me wonder if I have a bad one.
I keep 4g on & I get good battery life too. I don't underclock or even mess with the CPU at all either.
im starting to wonder if I got one with a really good battery, ill post screens tomorrow but since I bought the phone like 3 weeks ago I have Never turned off 4g. im on wifi at home but where I work for 8 or more hours in on 4g. i leave wifi on anyway and i dont use juice defender or any power saving modes, i tend to use full brightness, and i play with my phone (checking phandroid and cnet/videos, rev3 etc...) whenever I'm not in a sale.
all of that and my battery always lasts more than 12 to 15 hours.
I will charge tonight and post screens either as soon as I remeber when on low battery.
is anyone else getting great battery life?
Sent from my SGH-T989 using xda premium
Are u talking high use or normal use cause with high use i get about 7 or 8 hours with normal use about 12 to 14 and minimal use easily 24 to 30 hours
Sent from my SGH-T989 using xda premium
i only know my own definitions of high and low use I guess but id estimate an average of being touched at least 60% of every hour, up to 90% at work and when I'm bugging my fiance for playing with my phone too much at home its up to 100 lol
and at least once a day I flash something and reboot twice and run sd maid and i play some games like shadowgunner, samurai vengeance 2 and i love dragon fly :-D
I'm rooted btw
Sent from my SGH-T989 using xda premium
mikeb85 said:
Are u talking high use or normal use cause with high use i get about 7 or 8 hours with normal use about 12 to 14 and minimal use easily 24 to 30 hours
Sent from my SGH-T989 using xda premium
Click to expand...
Click to collapse
Psh, this damn thing burns through 8% an hour on idle in an area with full bars reception. Low middle high usage? My zero usage is about 10-12 hours.
Sent from my SGH-T989 using Tapatalk
I just got my sgs2 yesterday
Today i got 14h and still have 15% left with 4g on all day, texting, galaxy voice commands, Bluetooth and light browsing.
Sent from my SGH-T989 using Tapatalk
Just my two cents, but I leave my 4g on all the time. I literally never turn it off and I get a full days (moderate) use out of my SGS II. I don't know how, but this is BY FAR the very best battery life i've ever gotten out of an Android; and I've owned quite a few out them by this point (since the original hero). I know it's battery is very large for an oem/ as it comes battery and for me I can really tell.
Amazing battery life on a single charge
I'm getting 13+ hours with 4G on all day. Simply amazing battery life.
My phone is rooted with Teshxx streamlined ROM loaded, with no additional power saving apps of features running.
I'm in an area with amazing 4G signal, my phone never switches to 3G/Edge.
It is possible your mileage may vary if the phone is switching constantly between the two.
mettleh3d said:
What was your reason for exchanging?
Sent from my SGH-T989 using Tapatalk
Click to expand...
Click to collapse
I was having random shutdowns, like 10 a day. So far no problem with this second one.
My first one I did only get around 8-12hrs, but I hadn't mess with my apps.
This time around I set up the apps the refresh themselves to do it every 4hrs (like Facebook, tweeter, weather bug, etc)
Sent from my SGH-T989 using xda premium

Battery Life thread

hey i know every once in a while someone post a thread *****ing about battery life but i need some serious help. i think my pictures will speak for themselves. iv calibrated battery, wiped clean phone. drained battery and recharged to 100 percent. anything anybody has posted before im almost sure i have tried to no avail
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As you can see only 18 mins off the Charger and already down to 90 percent! and thats with WIFI GPS BLUETOOTH AND 4G OFF!
my setup is on one of the pictures.
could it be a faulty battery?
I've been having this problem too, RECENTLY. used to be fine a month ago. Idk what's going on really
Sent from my SPH-D710 using xda premium
I'll bite. First off, detail your setup. modem, kernel, ROM.
Second, from your graph it doesn't look like you are in a good service area, how many bars do you usually have?
4+ in screen time. At 4% left.
Rom: calkulin 2.8.1
Kernel: rogue desperado
modem: ek02
undervolted -100mv with calk's script. Max cpu set to 1ghz
kasper19 said:
I'll bite. First off, detail your setup. modem, kernel, ROM.
Second, from your graph it doesn't look like you are in a good service area, how many bars do you usually have?
4+ in screen time. At 4% left.
Rom: calkulin 2.8.1
Kernel: rogue desperado
modem: ek02
undervolted -100mv with calk's script. Max cpu set to 1ghz
Click to expand...
Click to collapse
Sorry i could have sworn i uploaed a picture of my setup. its now the third picture.
i usually have around 3-4 bars. at that time i was at work but that is a constant drain home or anywhere else. at home i get much better signal.
Have you ever had reasonable battery life, or is this a new issue?
It's possible that your battery is bad, but I think it's unlikely unless it's been under high temps for an extended time.
Some suggestions I'd try if it was me;
- backup your sd card and reformat it
- try running calk 2.8.1 without the ics theme to see if usage improves
- run your setup without wiping/flashing for a few days and see if the phone settles in
Good luck getting it sorted.
Sent via EM waves.
When I first started, I was getting horrible battery life. Like 50% loss in 4 hours. Here are a few things you can try.
1. Turn off auto sync to google
2. Turn off facebook and sync
3. Turn off email syncing
You get the pattern. I think for me it was the fact that I was in a horrible reception area and all of the syncing made the phone constantly try to get a connection. Now i get 5-10% loss in 4 hours, which I'm happy with.
Kernel and modem are important too, so might help to tell us what you're using exactly.
Hope this helps.
EL26 and EL29 Kernels/Modems were huge battery drainers for me.
My set up is calks 2.8.1
Kernel: Desperado flashed yesterday
And modem El 36.
You ask about having strong cell signal, I guess it will drain the batter if you're going in and out of service? Just curious because on my way to and from our shop there is one spot where all phones drop service. It only lasts about 1/8 mile but it happens with every carrier I've tested.
Like someone above said turn off all syncing also keep in mind that phone batteries now dont hold the first 10% of a full charge because that damages the battery in the long run. The first 10% always goes down that fast unless you bump charge which is when you plug in to 100% then unplug and replug for 5 minutes and repeat a few times. If it continues to die like that then try underclocking with setcpu while you have it with screen off or in a phone call also you can undervolt. Turn off auto syncing and check to see what proccesses you have running that eat your battery and kill them.
Sent from my SPH-D710 using xda premium
I'll give you one solid advice. Run Blazer ROM.
Go back to stock voltages.
Mu5ic92 said:
hey i know every once in a while someone post a thread *****ing about battery life but i need some serious help. i think my pictures will speak for themselves. iv calibrated battery, wiped clean phone. drained battery and recharged to 100 percent. anything anybody has posted before im almost sure i have tried to no avail
As you can see only 18 mins off the Charger and already down to 90 percent! and thats with WIFI GPS BLUETOOTH AND 4G OFF!
my setup is on one of the pictures.
could it be a faulty battery?
Click to expand...
Click to collapse
How long does the battery last to an almost full discharge? I had the same problem when I flashed a new ROM and tried calibrating the battery as you did (deleting battery stats file). I'd unplug my phone after a full chatge and 30mins later would be down to below 90%.
Turns out that deleting the battery stats file may not do anything to our phone in terms of calibration, and the way to calibrate it is by doing a battery pull for half an hour or so. Then just using the phone, and the battery eventually calibrates itself. Can't remember the link where I read this, but after doing that and after a couple weeks of usage, the first 10% drop wasn't so dramatic. I currently get a day with an average of 3-4 hour screen on time. Using the same ROM that seemed to give me problems in the first place.
Also like someone else mentioned, phone signal is a huge factor in battery usage. One of the cell towers went down where I live, and during those 7 days (yeah, thanks sprint!), my phone would constantly jump back and forth off of roaming... battery life would tank so quickly that I turned off data/3G/4G to get any semblance of battery life.
beezar said:
How long does the battery last to an almost full discharge? I had the same problem when I flashed a new ROM and tried calibrating the battery as you did (deleting battery stats file). I'd unplug my phone after a full chatge and 30mins later would be down to below 90%.
Turns out that deleting the battery stats file may not do anything to our phone in terms of calibration, and the way to calibrate it is by doing a battery pull for half an hour or so. Then just using the phone, and the battery eventually calibrates itself. Can't remember the link where I read this, but after doing that and after a couple weeks of usage, the first 10% drop wasn't so dramatic. I currently get a day with an average of 3-4 hour screen on time. Using the same ROM that seemed to give me problems in the first place.
Also like someone else mentioned, phone signal is a huge factor in battery usage. One of the cell towers went down where I live, and during those 7 days (yeah, thanks sprint!), my phone would constantly jump back and forth off of roaming... battery life would tank so quickly that I turned off data/3G/4G to get any semblance of battery life.
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Don't think this is the same thread you mention, but here's one on battery calibration. I might give it a try, figure it can't hurt anything.
Rom took a couple days to settle in thsn BAM! 5 HRS screen on time. Stock el29 tegrak uv 75 Strongsteve. I did flash back to eko2 modem After high battery drain on EL 29
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Am I the only one who can squeeze 4 days out of their e4gt? That's with texting fairly often, emails, downloading an app or two, and checking my facebook once a day or so.
I unplug my phone at 8:30am and get home at 6:00pm and I'm at 60%. That's with 1 hr reading and some texting, compared to my Evo my S2 is a god sent.
MultiLockOn said:
Am I the only one who can squeeze 4 days out of their e4gt? That's with texting fairly often, emails, downloading an app or two, and checking my facebook once a day or so.
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One to two days, I won't question you on that (i get 2 days on Blazer ROM easy) BUT 4 days?!!! I seriously question that.
Sent from my SPH-D710 E4GT
MultiLockOn said:
Am I the only one who can squeeze 4 days out of their e4gt? That's with texting fairly often, emails, downloading an app or two, and checking my facebook once a day or so.
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That's awesome. Screenshots of battery life including display on time?
MultiLockOn said:
Am I the only one who can squeeze 4 days out of their e4gt? That's with texting fairly often, emails, downloading an app or two, and checking my facebook once a day or so.
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I do not believe without some solid evidence and more info.
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