The power consumption is huge - Epic 4G General

Yesterday, I was using the Google navigation on 3G network with the phone connected to a 500mA car charger. After 1hr, the battery dropped 20%...Anyone knows if a 1000mA car is enough??
Tonight, I was watching a Youtube HD video on 4G network (2/3 bars on 4G) with the phone connected to a 1000mA USB wall charger. After 10min, the battery dropped 2%...Well, even 1000mA cannot compensate the consumption of the battery.
The power consumption of this phone is ridiculous. Something must be wrong with the system/circuit design.
NOTE: I'm not complaining the battery but the power consumption of this phone. The charging cannot compensate the usage of the power. Think about a laptop. It's even more powerful, but you can use it freely without any concern about the battery as long as you plug it in an ac adapter. Why can't Epic 4G do this?

man i been seeing the same problems i was listen to the sprint radio while hooked up to the charge and would see it stay at the same percent for about a hr before it went up 1%. this battery issues is making me hate the phone right now and i cant find any rapid charge programs or settings for this yet. cant wait for some custom rom to come out that hopes to fix some of these issues

yup 4g is a battery hog which is why people are complaining about battery life,I suggest you turn it off, it's just not worth it IMO, which too bad cause we're paying extra afterall.

seven7dust said:
yup 4g is a battery hog which is why people are complaining about battery life,I suggest you turn it off, it's just not worth it IMO, which too bad cause we're paying extra afterall.
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I saw a post this morning. The 3G even consumes more battery on Epic 4G during browsing. so we can expect even worse under 3G.

I'm on my third Epic and they have all had battery drain issues. Battery manufacture dates ranged from July to mid August. Right now actually, I'm streaming some radio over 3g and have an AIM client running in the background and the batter is slowly draining while plugged into the charger included in the box.
I have tried a factory reset just to be sure any apps I installed weren't affecting anything and still no dice. Even with running navigation in the car while plugged into a usb charger the battery will drain about 1% every 5 minutes or so. I'm probably returning the phone for good in a few days

This is with 4G disabled, using SwitchPro widget to enable 3G. I also have background updates disabled(under accounts/sync), I manually do them periodically.

fookxixi said:
Yesterday, I was using the Google navigation on 3G network with the phone connected to a 500mA car charger. After 1hr, the battery dropped 20%...Anyone knows if a 1000mA car is enough.
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That shoul be more than enough. I use a Motorola-branded 850mA microUSB car charger (quite cheap on Amazon). On a recent day-long driving trip, it was sufficient to maintain the battery level while streaming audio over 3G and simultaneously running GPS tracking. I don't think a 500mA unit would have handled the load, however.

I'm really starting to think this phone is an epic fail. I get from 1.5 hours to 2 hours of use from a full charge! Thats with everything off, 4G, wifi, bluetooth, GPS. The sprint store manager wouldn't exchange my phone because he said their is nothing wrong with it. If it takes 6 hours to charge and then I get 2 hours of use, this phone is worthless to me!

syntax_erorr said:
I'm really starting to think this phone is an epic fail. I get from 1.5 hours to 2 hours of use from a full charge! Thats with everything off, 4G, wifi, bluetooth, GPS. The sprint store manager wouldn't exchange my phone because he said their is nothing wrong with it. If it takes 6 hours to charge and then I get 2 hours of use, this phone is worthless to me!
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Yeah that doesn't sound right. I think most people would have a hard time making it last only 2 hours. Maybe gaming while running WiFi tether.
Keep in mind with CDMA, the lower the signal to the tower, the more power it takes to keep the connection active. For GSM this is less of an issue. How is the signal where you live?
An interesting side note. I plugged in my charger for my Bluetooth which is only 180ma and it went from 70% to "Fully Charged" in 10 seconds. When I unplugged the charger it went back to 70%. It really didn't like that low power feed.

Sorry if it came out orange. I used screenshot the app and that's what i got. Anywho, its a perfect combo what I've done. See the up time, nearly 15 hours up time. I only lost 35% of life during the time too as you can see how full the batt is.
Remedies: Autokiller set to extreme. ATK: Set to aggressive, with auto kill set to when screen is off. Interval every hour. Cachemate: all settings lit up, so it clears about 12-14 MB every hour or 1-2 every manual clear. Set CPU: Conservative 1000/100 with set to boot. Notice, set CPU resets itself every reboot for now, just make sure your good.
Then you should be good as I have for TWO days on one charge nearly 24 hrs ago.
Sent From The Moon

My battery has increased five fold with that evo fix after an hour and a half I've only used 6 percent of my battery

PlankLongBeard said:
Sorry if it came out orange. I used screenshot the app and that's what i got. Anywho, its a perfect combo what I've done. See the up time, nearly 15 hours up time. I only lost 35% of life during the time too as you can see how full the batt is.
Remedies: Autokiller set to extreme. ATK: Set to aggressive, with auto kill set to when screen is off. Interval every hour. Cachemate: all settings lit up, so it clears about 12-14 MB every hour or 1-2 every manual clear. Set CPU: Conservative 1000/100 with set to boot. Notice, set CPU resets itself every reboot for now, just make sure your good.
Then you should be good as I have for TWO days on one charge nearly 24 hrs ago.
Sent From The Moon
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I would love to see more info/screenshots on this. The one SS you included somehow ended up thumbnail sized only. 2 days is nuts, anything over 24h would be.

hey guys
I've been really happy with the battery life on my epic - I get about 12-14 hours with on-off use, 4G off. My battery is sitting at about 35% after playing a bunch of games for about 3 hours in between classes and it has been running off battery for about 8 hours, browsing the web, sending texts and downloading apps on both 3g and wifi.
I'm using Advanced Task Killer and its set to kill aggressively every half hour - it kills all apps except Juice Defender, itself and LauncherPro.
I'm running LauncherPro - if that matters - doubtful, but I didn't like touchwiz. And I'm running JuiceDefender on default settings. Basically it kills the 3G radio when screen is off unless its transferring > then 15kbs of data. The normal radio remains on for calls/texts.

lv2bll said:
My battery has increased five fold with that evo fix after an hour and a half I've only used 6 percent of my battery
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What is the EVO fix? I'd love to try some extra tips.
My two cents - a typical day puts me at home and at work for the majority of the day and night, which both have wi-fi. I've turned off "look for open networks", "never allow wi-fi to sleep" and I leave wi-fi on. After a full night of charge I took the phone off of the charger at 11am on Saturnday and it finally turned off Sunday at 8pm - 33 hours is pretty darn good, almost two days. However yesterday I took the phone off the charger after leaving work at 6:30pm (so no wi-fi, just 3G) and in just an hour with watching a 15 minute long normal quality YouTube video, a few texts and a short phone call I was down TWENTY PERCENT. What the heck.
Over wi-fi, like I said, I'm good - great battery life since I'm not waking up the 3G radio to do anything. But when I get out of those wi-fi areas that's when my battery starts to drop. Anandtech is getting similar results with awful 3G battery:
http://www.anandtech.com/show/3891/samsung-epic-4g-review-the-fastest-android-phone/8
Something is wrong with the 3G radio, and I hope Sprint & Samsung seriously do something about it.

You guys are all failing to look at "Cell standby" details.
Time without signal on this phone - no matter WHAT coverage area you're in - is ALWAYS > 50%. This is bull**** and a Samsung software issue. Take a look for yourself.

oxeneers said:
You guys are all failing to look at "Cell standby" details.
Time without signal on this phone - no matter WHAT coverage area you're in - is ALWAYS > 50%. This is bull**** and a Samsung software issue. Take a look for yourself.
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I never had a problem with but I've been reading many having a problem with "Cel Standby" going out of control. Mine it at 17%. Highest I have saw it was in the upper 30's range after a full day (14hr)

Just an update on my usage from Pg.1:

oxeneers said:
You guys are all failing to look at "Cell standby" details.
Time without signal on this phone - no matter WHAT coverage area you're in - is ALWAYS > 50%. This is bull**** and a Samsung software issue. Take a look for yourself.
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I am not seeing this issue. Never seen it above 3%. Besides most of the battery is going to the screen it seems. I am actually wondering if it reporting the usage correctly. If the screen was really take that much of the power, it should be lasting a lot longer.
People getting great battery life are reporting they are using task killers and data connection blockers. That isn't even where they majority of the power goes. The system tells us it is going to the screen. Not the tasks or data connections. It seems counter-intuitive.

oxeneers said:
You guys are all failing to look at "Cell standby" details.
Time without signal on this phone - no matter WHAT coverage area you're in - is ALWAYS > 50%. This is bull**** and a Samsung software issue. Take a look for yourself.
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Click to collapse
Turn airplane mode on then off. (settings -> Wireless & Networks)
This will solve the problem until the next time you reboot. You must do this after every reboot.

I'm working on a more scientific breakdown of power consumption. But here are some brief findings.
The highest power consumer is the display. Even on the lowest brightness setting it consumes more power than a normal LCD (I'm comparing it to my Evo). If the display is only showing a black background it is lower power, but then again if all it is showing is noting, it may as well not be on at all. If you actually want to display something on the screen, it consumes power like it's going out of style. So much for Super AMOLED being a power saver (total and completely false.)
The next highest power consumer is the 3G radio. Under similar circumstances (similar signal strength) the 3G radio is consuming more power than the 4G and Wifi radios combined. Wifi seems to consume the least, followed by 4G then 3G. This is crazy and if not fixed might be unacceptable.
Next is background apps, most specifically anything that uses the network (email syncing, social networking and location reporting services like latitude) being the worst. The sync settings on the Epic are not as robust as the Evo and I've struggled to gain control of gmail without just setting it to manual only. Do not use latitude and although some will speak out against task killers, having one to keep "maps" at bay is worth it alone.
Then there are more obvious things like live wallpaper. Or specifically anything using the CPU / GPU and GPS.
More to come, but right now, something must be done about the 3G radio and GPS or this phone could live up to the moniker of Epic fail. I really hope Sprint and Samsung are doing something because otherwise if the phone worked as it could, it would be awesome.

Related

Battery life?

Is it normal that I can barely last a day on a charge with this device?
My GSM devices could go at least 2 days without charging. I don't mind charging every night, but right now it would be dead before my day is over if I don't charge it at my desk too. That can't be right?
I ran bunch of test on this before i decided to keep it. One day I set it up without anything running. from 8am to 8am the next day the battery power was still 100%. Another test I did was playing audio. it went about 6 hours and I still had 20-30% battery remaining. it was loosing a about than 10%-15% per hour.
The problem is once you go on data mode it stays there and doesn't come out when it doesn't need it anymore and that drains the battery super fast. These type of programs:
-weather check
-Windows Live (for maps and searches)
-traffic
-e-mail (if you have autocheck on)
When you see the data mode (the two arrows that replace the tower icon) appeaing go in the comm manager and disable the data mode. That's obviously not a permanent solution but until figure out how to have the programs that use the data connection to return the radio to audio mode when they are done using the data mode, you can save some power.
I hope that helps.
The Mogul's battery life is definately very sensitive to the software you have running.
When I first got mine, it would barely last me 8 hours of light usage before getting the critical battery alert.
A week or two later, after a few charge/discharge cycles and a ton of configuration/software tweaks, my battery lasts all day, and is only down to 60-70 percent when I go to plug it in at night
Just to extend on what was already said, if you have outlook set up to sync automatically, set it to 5 minutes instead of "as they arrive." This made a big difference for me.
I use BatteryStatus to monitor my battery drain, and it drains at about 30-40 mA when the screen is off and when it is on and dim, around 85-100 mA or so when nothing is really active and I am at the today screen.
From my experience, the thing that affects battery life the most is the signal quality of the phone/data service. If I'm in a location where the signal is 0 or 1 bar, then the battery will drain to 20-30 percent in about 4 hours. With a strong signal, the battery only goes down to 50% for the full day.
caxiem said:
From my experience, the thing that affects battery life the most is the signal quality of the phone/data service. If I'm in a location where the signal is 0 or 1 bar, then the battery will drain to 20-30 percent in about 4 hours. With a strong signal, the battery only goes down to 50% for the full day.
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Bingo
It's not the PDA part that is draining it, it's the RF part.
TC1 said:
Bingo
It's not the PDA part that is draining it, it's the RF part.
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Right, so I've established that my phones lasts more than a day just fine if I'm in good service.
But is this "normal" for a CDMA phone to do? My old GSM phones could go into "searching..." for hours at a time and still have more than 50% at the end of the day. I know CDMA phones use a little more power then their GSM counterparts, but I didn't know it was THIS bad! Or is this just a bug in the system that can be fixed in the future? Being my first CDMA device, I can't tell yet what's normal or not.
GSM and CDMA RF transceivers manage power output differently. What's ironic, is that in theory CDMA handsets are suppose to manage battery power better than their GSM counterparts, sincd CDMA tranceivers continually vary the power output to match the cell tower coverage, while GSM tranceivers power a steady-state output.
Now that's in theory.... I've read numerous ancedotal articles that have compared sibling phones (same model, but one is GSM and one is CDMA) and the GSM for whatever reason performs better in terms of battery life. I know.... doesn't make sense. Two theories have been proposed by folks, one being the actual coverage for a particular area and the other that Qualcomm just basically did a poor implementation of the CDMA design in their chipsets (which are widely used by everyone).
Wish I had a better answer, but I don't have any hard evidence at the moment to say it's definitely this or that explains the difference.
There is also a configuration issue whereby data connections are not terminated after an application is done with it. Email automatic Send/Receive being one of them. Shuting down the data connection through HTC's Comm Manager doesn't solve it either. I installed this software that allows you to manually enable/disable data connections, mapped it to button 5 and have seen my battery life almost double. This of course defeats automatic email reception though.
I have changed my battery drain from 90% a day to just 10% a day by turning off bluetooth discovery! I can leave bluetooth on all day, but by turning off discovery, it seems to save a tremendous amount of power.
jaslo1 said:
I have changed my battery drain from 90% a day to just 10% a day by turning off bluetooth discovery! I can leave bluetooth on all day, but by turning off discovery, it seems to save a tremendous amount of power.
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How do you turn just 'Bluetooth Discovery' off and not Bluetooth? Registry?
Tenchi4U said:
How do you turn just 'Bluetooth Discovery' off and not Bluetooth? Registry?
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start/settings/connections/bluetooth/mode/Make this device visible to other devices
This is a great thread. I always had the activesync to sync as items arrive. I bet this should help a lot. I'm going to change my weather options next. dont need constant weather updates all day long.

WiFi or 3G, which eats more Power?

i use WiFi @ home and work, 3G everywhere else.
my battery was over 50% before bed, woke up with am with 5% left.....
so 45% of my battery life was eaten up in 8 hours with NO use?
any thoughts?
Wifi seems to be a real battery eater on this device (along with GPS). I leave it switched off unless I'm actively using it, and have no problems with battery life (it would last >24 hours if I let it.. I charge overnight though).
As there's no 3G switch on the widget I don't ever switch that off so haven't seen what improvement that would give. Cell Standby is still the largest user of battery, so maybe it would.
Set wifi to sleep when screen turns off.
There's an option for that? Not seen that one..
muncheese said:
Set wifi to sleep when screen turns off.
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I didn't know you could do that, however, i already have that option selected....after i found it in the menu.
i guess i'll just have to experiment and see if 3G saves me power over the weekend.
Yeah I am pretty sure that option is the default. It still definitely drains more power with the WiFi enabled than without, sleeping or not. Not sure vs 3g, I disable or enable both as I need them.
I thought Wifi drains very little power ... with my phone on airplane mode and wifi only, the battery lasts over 30 hours with Meebo on, push e-mail on, and e-mail sync every 15 min.
Likewise, I have gps/wifi/2g/screen widgets on my main home page.
This doesn't exactly apply to the OP, but there's a nice app called "Y5 - Battery" in the market that switches off the WiFi radio in areas that you usually don't use WiFi.
Also, you can see what's draining your battery if you go to Settings > About Phone > Battery Use. There's some cool graphs showing where all your battery went since the last charge. Maybe you have a program that's running in the background that's sucking up all your battery.
I have had some battery drain issues since I received my N1 3 days ago. I found that Android 2.1 has a nice battery log (/d/battery_log) which updates every 50 - 55 seconds. In doing some tests to see what was killing my battery I can tell you that it isn't WiFi.
I would say that when in use, 3G draws a bit more than WiFi when actively used, but when WiFi is just idle it seems better than when 3G is connected and not in use.
In case anyone cares...I am still isolating all of the battery drain issues, but one of the biggest I have eliminated by uninstalling seems to be from BeautifulWidgets. I found it hard to believe, but my testing seems pretty clear. I also have a decent draw whenever I'm in the car with Bluetooth sync going. I would have had a hard time confirming this without this battery log file.
Wifi is extremely power efficient on this device.
I use the device on at&t edge and have the wifi turned on all day. the battery drain with pus email i about 4%/hour.
I think the combination of wifi PLUS being on an HSDPA network is killing your battery.
pus email? sounds gross
A quick calculation gives me 2.4% an hour, and that's with sync on, Wifi off, 3G on and using the phone a bit (not so much today). That's consistent with what I see normally - if you never actually used the phone you could push 3 days out of it.. but of course there wouldn't be much point in having it switched on then so it drops to about a day after a bit of driving w/bluetooth on, streaming music, etc.
Of course it's not really productive to look at battery life as 'how long can I make this last' (although knowing I can theoretically push it to 3 days plus is going to be useful on holiday). You work out your average day.. say up at 8am, turn in at midnight, so that's 16 hours actual time that it's needed (assuming you charge overnight like most do) - then fiddle with the settings based on your own use so you hit that comfortably. I'm probably being overconservative right now.. I'm finishing the day with nearly 50% battery left & need to ramp it up a bit Maybe a few more games of Frozen Bubble..
http://www.google.com/phone/static/en_US-nexusone_tech_specs.html
According to the Google spec sheet:
Power and battery
Removable 1400 mAH battery
Charges at 480mA from USB, at 980mA from supplied charger
Talk time Up to 10 hours on 2G
Up to 7 hours on 3G
Standby time Up to 290 hours on 2G
Up to 250 hours on 3G
Internet use Up to 5 hours on 3G
Up to 6.5 hours on Wi-Fi
Video playback Up to 7 hours
Audio playback Up to 20 hours
I'd love to see someone get 12 days of standby!
The specs for mobile phones are always a bit of a fiction.. maybe you could do that if you put it in airplane mode and if you never activated the display at all...
I had a Sony Erricson that claimed 800 hours (over a month!) of Standby. Never got it over 2 days..
Would be interesting to see if anyone has managed 10 hours or even 7 hours of talk time... personally I doubt it.
TonyHoyle said:
I'd love to see someone get 12 days of standby!
The specs for mobile phones are always a bit of a fiction.. maybe you could do that if you put it in airplane mode and if you never activated the display at all...
I had a Sony Erricson that claimed 800 hours (over a month!) of Standby. Never got it over 2 days..
Would be interesting to see if anyone has managed 10 hours or even 7 hours of talk time... personally I doubt it.
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Some phones in Airplane Mode when not used can do those kind of numbers though. My K800 lasted about 2 weeks in standby when running like above. Though that just proves how pointless such numbers are.
So when using wifi, is 3g auto turned off?
galaxys said:
So when using wifi, is 3g auto turned off?
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I would assume the data aspect is, but the 3G voice is still active, even with WiFi on.

Battery sucks, so I went to the Sprint store and...

I know that battery life has been a hot topic among EVO 4G users. I have seen both sides of the spectrum with some getting an entire day or more out of their phones, while some, like myself, see 5-7 hours at the most. I finally went to my local Sprint Store/Repair Center where I was told that my battery life was "normal" and that EVO users should "except to charge your phone two or three times a day". Then the rep handed me a spare battery at no charge to me and told me to have a nice day.
So, here's the deal. I am a non-rooted, non-anything user. Is the only way to see a 24 hour charge to root my phone and flash a custom ROM? He did mention that Froyo would "increase your battery life a lot". Whenever that's going to happen. Sorry to add another thread on battery life, but I want to make an informed decision, as well as know if this rep was just brushing me off with 5-7 hour being "normal" and then handing me an extra battery for free.
So you got a free battery and all it cost you was having to talk to a fool? Sounds good to me.
I routinely charge every other night with my moderate usage. 5-7 hours would only make sense if I was streaming Pandora all day with 1 bar.
5-7 hrs? are you constantly downloading things? heavy usage? or just on stand-by most of the time? if your using your phone casually, like 3-4 calls ~ 15-20 min each call and have emails coming in at about 2-3/hr and you surf the web about 1hr/day on your phone... 5-7 hrs is not very good... usually you would need to make calls that are 30+ min with heavy browser usage and be in a really ****ty signal area while playing games and texting every 5minutes for you to get such ****ty battery life... there are a lot of forums out there with tips/tricks in improving battery life so don't expect people to start posting them here as there are THOUSANDS of posts on battery life on androidcentral.com and other such sites...
good luck... you should be able to get at least 12hrs on one charge with little to moderate usage -- again google and read for forums out there as there is a TON of information.
I'm curious, are you in a 4G or 3G area? if you have 4G on where there is no 4G, your phone will constantly search for a 4G signal, same with wifi. I find that 3G is pretty fast where I live. 1.2MB down. so I never really turn on 4G or wifi. I've been getting about 14-20 hrs depending on use, but that was only the few times I made it through a day without plugging it in to add music, or try to root it (without success) and stuff. today I unplugged it at 9:40 am, and have been using it pretty heavy. about 15 minutes of streaming video, 45 minutes of music playback, 35 minutes of internet use, constant messaging, some pictures, google talk, fringe running, as well as qik in the background, actually all kind of apps pop up in the background. I am at 50% battery at 5:00 pm. I think that's not bad compared to the N1 I just sold. I will say that I think Advanced Task Killer, from the markets probably helps the battery life. I highly recommend it. make sure you set it up to auto kill apps in the background. I think I get a couple of extra hours this way.
Found on Android Central Forum: (and it works, I get about 15-18 hours)
CHARGING EVO BATTERY FOR MAXIMUM LIFE:
You can charge your battery the following way to see if that helps improve the battery life on your device.
1.Connect the phone to the charger and charge the device until the LED turned green with the phone powered ON
2.Disconnect the phone, and power it OFF.
3.Reconnect the phone to the charger, and charge the device until the LED turns green again.
4.Disconnect the phone, power it ON and then power it OFF.
5.Reconnect the phone to the charger and charge until the LED turns green again.
6.Power ON and use.
My battery appears to have the same issue as well. My backlight is at 8%, auto sync is disabled for all services, always on mobile data is disabled, my network is set to CDMA, I'm not overclocked at all. I've done all the other battery saving tricks and I've done all the battery charging tricks.
I played Raging Thunder 2 for less than half an hour this afternoon, and my battery dropped down to 58%. I'm aware that games are pretty intensive, but isn't this a bit much?
EVOKeith said:
I know that battery life has been a hot topic among EVO 4G users. I have seen both sides of the spectrum with some getting an entire day or more out of their phones, while some, like myself, see 5-7 hours at the most. I finally went to my local Sprint Store/Repair Center where I was told that my battery life was "normal" and that EVO users should "except to charge your phone two or three times a day". Then the rep handed me a spare battery at no charge to me and told me to have a nice day.
So, here's the deal. I am a non-rooted, non-anything user. Is the only way to see a 24 hour charge to root my phone and flash a custom ROM? He did mention that Froyo would "increase your battery life a lot". Whenever that's going to happen. Sorry to add another thread on battery life, but I want to make an informed decision, as well as know if this rep was just brushing me off with 5-7 hour being "normal" and then handing me an extra battery for free.
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Holy ****!
I'm not a "heavy user" and I turn off all sync and radios until I need them. In this state the phone will still recieve phone calls and text msgs. I turn on either wifi or mobile network access when I want to surf and enable bluetooth when I drive to connect to hand free in the car. I turn everything off when I'm done using each. I have all the power widgets right on my home screen so it only takes a second to turn on/off as needed. Using this way I have gone over 3 days before charging several times. I know this doesn't work for everyone, but I'd rather decide when I'm going to use my phone for what than to be at the beck and call of my phone. YMMV
GaryJ51 said:
I'm not a "heavy user" and I turn off all sync and radios until I need them. In this state the phone will still recieve phone calls and text msgs. I turn on either wifi or mobile network access when I want to surf and enable bluetooth when I drive to connect to hand free in the car. I turn everything off when I'm done using each. I have all the power widgets right on my home screen so it only takes a second to turn on/off as needed. Using this way I have gone over 3 days before charging several times. I know this doesn't work for everyone, but I'd rather decide when I'm going to use my phone for what than to be at the beck and call of my phone. YMMV
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Why don't you just use it normally and charge each night?
Just lazy.
Yeah, I've done all the tips and tricks and charge with power on the power off and charge, wash, rinse, repeat. Nothing works. I'm curious to see if the "free" battery they gave me will last longer.
I was in the same boat as you.
I have a fix and it should work.
turn on always on mobile data and enable auto sync
I posted a thread about getting rediculous battery and someone told me to do that and it worked.
go to settings all the way to the bottom to about phone Ans then choose battery. I bet ur up time and away time are the same. if they are that means something is keeping your phone on even tho the screen is off. doing what I told you above with a restart should fix the problem. also when you restart it its not going to instantly go to sleep leave your phone for like an hour and then check the up and awake time and it should be different. hope that helps.
and enable data when roaming.
Without specifics about what you have the phone doing and what kind of signal you have at home/work/etc, this is a totally irrelevant discussion. In my experience, the only thing that actually kills the battery quickly on the Evo or any other phone is poor cell signal.
I get well over a day on my evo... Running the netarchy kernel along with setcpu profiles. I have my phone set to clock to a max of about 384mhz when the phone screen is off.
I did the battery recharge trick and it helped a lot. I also have my display timeout set to 30 seconds.
5-7 hours before i rooted i would get 10-12 easy since rooting and loaded the.bakedsnackes rom i get avg 19 hours
sent with my evo from a secret place
Dump the Mail app and use Gmail to pop your accounts
If you are using the MAIL app that comes with the OS, that is likely the culprit. Especially if you are syncing more that one account. That can kill the battery very fast.
**try using the gmail app, and set it up so that it pops your pop mail accounts for you and pushes them to your phone. Then disable the built-in mail app and never use it again. This alone should double your battery life. It worked on the Hero and it works in the Evo.**
Do you by any chance use Yelp? I did an experiment last week with Yelp. Without the Yelp service running in the background, I would lose less than 8% of my battery overnight. With the Yelp service in the background, I lost about 50%. I've emailed Yelp to see if they can disable the Yelp service if I don't login to my Yelp account through the app.
Putting my phone on wifi made it so in the morning (4 hrs of low signal then to 50% battery), I put ti on the school's wifi and it was 80%.
tadtam said:
Found on Android Central Forum: (and it works, I get about 15-18 hours)
CHARGING EVO BATTERY FOR MAXIMUM LIFE:
You can charge your battery the following way to see if that helps improve the battery life on your device.
1.Connect the phone to the charger and charge the device until the LED turned green with the phone powered ON
2.Disconnect the phone, and power it OFF.
3.Reconnect the phone to the charger, and charge the device until the LED turns green again.
4.Disconnect the phone, power it ON and then power it OFF.
5.Reconnect the phone to the charger and charge until the LED turns green again.
6.Power ON and use.
Click to expand...
Click to collapse
I would avoid doing this. Lithium-Ion Batteries (found in the Evo and almost all other phones and laptops) can only go through a certain number of charge cycles. This method will not help prolong battery life.

Help? A few uncommon problems

Ok so I received my Vibrant on Monday and so far I am in love with it. Their are three things that bug me, however.
1. Battery Life is TERRIBLE. I know, I know-This has been discussed before but I did everything the other threads said and still no difference. On my phone, I will leave it on standby and it will drop 8 percent in like an hour and a half. Somethings wrong. Also, If I play the Sims for two hours (like I did today) my battery goes from 98% down to 45%. Is this normal?
Just to point out what I have going on with my phone:
- Brightness is turned down COMPLETELY. Automatic brightness is turned OFF.
- 3G is always on. Could this be the culprit?
- I have a completely black background.
- Last I checked, it said my display was taking up 60-70% of my battery usage.
- As stated above, Sims DRAINS my battery. Either somethings up with my phone or Samsung should have made sure the Sims doesnt kill the device.
2. The second I take my phone off the charger, the battery goes from 100% to 98%. Can I fix this? Its kind of annoying...
3. Problem with the Sims. Im not sure if any of you have this issue, but whenever I tell my Sim to watch TV, the app shuts down and takes me back to my home screen. Any idea why its happening?
alecjake said:
Ok so I received my Vibrant on Monday and so far I am in love with it. Their are three things that bug me, however.
1. Battery Life is TERRIBLE. I know, I know-This has been discussed before but I did everything the other threads said and still no difference. On my phone, I will leave it on standby and it will drop 8 percent in like an hour and a half. Somethings wrong. Also, If I play the Sims for two hours (like I did today) my battery goes from 98% down to 45%. Is this normal?
Just to point out what I have going on with my phone:
- Brightness is turned down COMPLETELY. Automatic brightness is turned OFF.
- 3G is always on. Could this be the culprit?
- I have a completely black background.
- Last I checked, it said my display was taking up 60-70% of my battery usage.
- As stated above, Sims DRAINS my battery. Either somethings up with my phone or Samsung should have made sure the Sims doesnt kill the device.
2. The second I take my phone off the charger, the battery goes from 100% to 98%. Can I fix this? Its kind of annoying...
3. Problem with the Sims. Im not sure if any of you have this issue, but whenever I tell my Sim to watch TV, the app shuts down and takes me back to my home screen. Any idea why its happening?
Click to expand...
Click to collapse
1. Leaving a phone in 3G all the time is not a good idea, if you have WiFi near you you can connect to I'd use WiFi instead, it has less battery drain then the antenna that is constantly searching for 3G signal - unless you are in the area with bulletproof 3G coverage of course.
2. It seems like this bug is common 100% jumps to 98% once you unplug the charger, are there really any accurate battery meters on the market?
3. Can't help you there, not playing the game on my phone.
HTH
lqaddict said:
1. Leaving a phone in 3G all the time is not a good idea, if you have WiFi near you you can connect to I'd use WiFi instead, it has less battery drain then the antenna that is constantly searching for 3G signal - unless you are in the area with bulletproof 3G coverage of course.
2. It seems like this bug is common 100% jumps to 98% once you unplug the charger, are there really any accurate battery meters on the market?
3. Can't help you there, not playing the game on my phone.
HTH
Click to expand...
Click to collapse
alright thanks. im in phoenix here so i am almost always in a 3G area. I guess i'll leave it on since i rarely dont have 3G
I also read on multiple forums including HoFo that 3G generally consumes more energy then WiFi.
sims 3 fix
so my girlfriend was complaining about sims crashing when she watched tv or relaxed on the couch. i fixed this by moving both the sims launcher app and the sims game app to data/app.
I normally use Edge simply because I don't need Wifi or 3G on unless I'm doing some heavy data transferring.
Currently I'm at 61% battery, which means my phone has been off the charger for 16hours. Its not a fluke either because its just normal use for me. I normally take my phone off the charger at 6am and I plug it back in around 11pm.
Prolonged GPS, Wifi and 3G will eat your battery. I'm not saying don't use the services, but you give up one for the other. I personally like to have awesome battery usage until I'm out and about and really need to use my phone.
I'd recommend you call T-Mobile customer service and have them diagnose the problems you are having and issue a replacement if necessary.
Based on my experience, battery life is excellent, probably the best I've seen in any smartphone in this category. Battery usually last easily through the day with heavy use, including:
- having 3G on all the time (and frequently switching to edge and back)
- 2 email accounts using push (gmail and exchange)
- gps on all the time
- google latitude running all the time
- facebook and twitter sync'ing every hour
- fancy widget sync'ing every two hours
- Newsroom harvesting 12 news sites in the background
- occasional picture (3 or 4) a day
- web browsing and searching
- xda app for reading and replying to this forum.
- bluetooth is always on
- wifi is on from 8 pm on.
I charge the phone through the night, unplug it at 8 am, return home at 8 pm and put it to charge around 11 pm, with still 50%. Brightness is set to auto. Phone is not rooted or modified in any way.
You bought a high end phone that should perform as such. You are supposed to get the most out of your phone, not turn off its features. I wouldn't listen to those who claim you should turn off everything and dim the screen. What's next, not using the phone to preserve batteries?
That's just my two cents.
Sent from my SGH-T959 using XDA App

Just had the best battery life I've gotten with this phone, and here's how I got it

I'll try to keep this short and sweet. I'm coming from a phone that was married to its charger (an overclocked-to-all-hell Pre) and I constantly micromanaged its battery by turning on data, wifi, and gps only when needed. With the Atrix's huge battery and the upgrade in phones I decided, "What the hell. Crappy battery life with this phone is still better than the best battery life with my old one. Enjoy the features." So I left Wifi, GPS, and Sync on 100% of the time. (I did, however, set all my apps to manual sync.) I have 3 homescreens and very, very few widgets. With a normal day's use this usually netted me about 14-17~ hours with about 2~ hours of screentime. Not the greatest, but amazing comparatively to the Pre.
Today I finally took the time go around and start messing with Tasker and other battery optimizing techniques. Here are a few thigns I did that have already netted me large returns:
The first is the simplest: I changed my screen brightness from Automatically adjusting to a static 15%. Though not the best, this is is bright enough for me in close to all situations and the ones where it's not I just change it back to automatic (this is done via the excellent Widgetsoid).
I use Google Voice for texts and that means I always need a data connection--this throws out things like JuiceDefender because it prevents me from receiving instant notifications. Between home and school I'd say I have a WiFi connection about 85% of the time, so i went into the Wireless preferences and turned my WiFi Timeout to "Never." In case you didn't know, a wifi connection is much more battery friendly than a 3G/4G one. Remaining always connected keeps my phone from cutting the connection and then rescanning for a network to connect to several times a day.
I used a Tasker profile I found online (it was either Reddit or Lifehacker, you can probably find it on both) that turns my GPS on only when I load an app that I've specified I want GPS on. I've known about this for a while but I was hesitant about instituting it because a luxury I wanted was to be able to open up Navigation, Yelp, or Foursquare and have an instant lock-on with my location. After testing today, between being generally located by wifi or cell-tower triangulation, and then having an exact location a few moments later with GPS, I found almost zero difference between leaving GPS on and having it enabled right when the app was opened.
Lastly, I downloaded the newest SetCPU here from XDA (it's free for XDA members. Search for it.) and had it throttle back the processor all the way while the screen is off. In addition, it will have the processor scaled back some when the battery reaches 30% and 10% respectively, and a few other instances such as the phone temperature getting too hot.
I'm laying into bed right now and according to Circle Battery Widget I have 37% battery left after 11 hours of being unplugged. Now, while this doesn't sound very great at all I want to specify that this is with my display having been on for 4 hours and 15 minutes. This is by far the largest battery hog (45% in this case) and there is no way my battery would have lasted before I changed these few things. I don't know how applicable they are to anyone else but they sure did help me and I felt I should let people know.
The battery on this phone is freaking AMAZING!! I use my phone a lot! Prior to this I had the Captivate and I would have to charge it around 3 or 4pm cause it was already at less than 15% and dropping quickly.
On 4/26 this phone lasted me 11 hours with lots of usage around 3 hours of display time.
On 4/27 I unplugged it at 10 and it died today at 1am! That to me is sick!! I charge every night so lasting a whole day of use is fine for me!
Oh and I have my brightness at a bit more than half, which I could have never done on the Captivate lol
my experiences have been rather positive as well.
4/26 unplugged at 12am.
4/27 flashed ginger-blur, restored apps, ubuntu webtop mod, all of the other mods.
@6pm i had 7 hours and 16 minutes of screen time and 1 gb of data used. I was at 15%
my only issue is that i only get battery updates every 10%. any idea why?
songokussm said:
my experiences have been rather positive as well.
4/26 unplugged at 12am.
4/27 flashed ginger-blur, restored apps, ubuntu webtop mod, all of the other mods.
@6pm i had 7 hours and 16 minutes of screen time and 1 gb of data used. I was at 15%
my only issue is that i only get battery updates every 10%. any idea why?
Click to expand...
Click to collapse
you need the circle battery widget to get 1% updates. There may be a couple other battery apps that do it as well, not sure.
Ive got a 120 apps installed and get close to 14hrs of battery life with screen on time of 4-5hrs
LancerV said:
Ive got a 120 apps installed and get close to 14hrs of battery life with screen on time of 4-5hrs
Click to expand...
Click to collapse
I'm pretty sure the only way I could get 5 hours of screen time is in airplane mode.
Coming from the Pre ( I still love that phone OS) I can testify to glorious battery life on my Atrix. I don't even charge it at night, I run all day long and charge it usually at my home office desk before I go to bed.
I do miss my Pre. My wife has one and it gives me sad puppy eyes every time I look over at it.

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