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.
Click to expand...
Click to collapse
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.
Click to expand...
Click to collapse
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?
Click to expand...
Click to collapse
I would assume the data aspect is, but the 3G voice is still active, even with WiFi on.
Related
Basically, when I leave wi-fi on my phone has incredible battery life. If someone has already mentioned this feel free to bury this post, but to my knowledge it doesn't seem this has been posted yet.
With wi-fi off and 3g on
- Battery lost 5-6 percent per hour
Wi-fi on
- Battery lost 1-2 percent per hour (sometimes less than 1 percent depending on what your doing)
Right now after having my phone on for 34 hours my battery is still at 70 percent! I'm fairly certain this is because it disables the 3g radio altogether which apparently is a real battery hog. That or maybe my phone is just a fluke. I really don't know.
This also seems to be tied to the htc sense rom (correct me if im wrong) but if i remember correctly battery drainage increased when wifi was enabled in the stock rom. Currently, I'm using the latest htc sense rom from modaco, I'd really enjoy hearing if enabling wifi helps others extend their battery life.
your having better battery life with the Desire ROMs? that odd, my battery life with a Desire ROM was 20-30% worse compared to stock.
amlwaycooljr said:
Basically, when I leave wi-fi on my phone has incredible battery life. If someone has already mentioned this feel free to bury this post, but to my knowledge it doesn't seem this has been posted yet.
With wi-fi off and 3g on
- Battery lost 5-6 percent per hour
Wi-fi on
- Battery lost 1-2 percent per hour (sometimes less than 1 percent depending on what your doing)
Right now after having my phone on for 34 hours my battery is still at 70 percent! I'm fairly certain this is because it disables the 3g radio altogether which apparently is a real battery hog. That or maybe my phone is just a fluke. I really don't know.
This also seems to be tied to the htc sense rom (correct me if im wrong) but if i remember correctly battery drainage increased when wifi was enabled in the stock rom. Currently, I'm using the latest htc sense rom from modaco, I'd really enjoy hearing if enabling wifi helps others extend their battery life.
Click to expand...
Click to collapse
Actually, it's a well known fact that 3G uses more power on most (every?) phones than Wifi... so you're not alone.
Hey when you say WIFI on..do you mean WIFI and EDGE or did you completely disabled the radio?
I never would have thought having wifi on would extend battery life to such a great extent though, in most of the latest cell phone reviews and what not everyone recommends to have wifi off saves battery life but in this case just the opposite is true. I kinda knew the wifi was more efficient but I never expected such a large benefit from leaving wifi on all the time.
@ram130 I haven't actually touched the radios at all so I expect them all to be on or at the very least have edge on, I am able to receive and send calls and txt so I'm assuming at least some cell radio has to be on. All I did was use the htc sense rom and enable wifi.
The cellular radio is still on, but 3G/Edge (data) are disconnected. I don't know how Edge compares to Wifi, but 3G is a battery killer in comparison.
uansari1 said:
The cellular radio is still on, but 3G/Edge (data) are disconnected. I don't know how Edge compares to Wifi, but 3G is a battery killer in comparison.
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Click to collapse
amlwaycooljr said:
I never would have thought having wifi on would extend battery life to such a great extent though, in most of the latest cell phone reviews and what not everyone recommends to have wifi off saves battery life but in this case just the opposite is true. I kinda knew the wifi was more efficient but I never expected such a large benefit from leaving wifi on all the time.
@ram130 I haven't actually touched the radios at all so I expect them all to be on or at the very least have edge on, I am able to receive and send calls and txt so I'm assuming at least some cell radio has to be on. All I did was use the htc sense rom and enable wifi.
Click to expand...
Click to collapse
In other words you have "use 2G networks" checked right?
I'm gonna try this is now. I'm currently at 3hr 32m unplugged with 80% left. I have wifi enabled and on the stock rom. So I'll post back when I wake in a few a hours and see how it goes.
My only problem:
Wifi seems to disconnect alot during the hour regardless if sleep policy is set to NEVER. My wifi signal is -78dBm to -86dBm in my room and on channel 11(used wifi analyzer). Any suggestions why?
I have the same experience at home, I enable Wifi and leave the phone stay home for a couple of days and battery still 40%, when I go out and wifi is not connected, 3G kicks in and battery drops much faster.
I'm using cyanogen 5.0.4.1
Interesting. Did not know this!
I guess I won't feel so bad about leaving my phone on Wifi all day!
Also, does anyone know how much power is used by not having a radio signal and letting it constantly search? That seems to destroy my battery. But sometimes I am in an area with wifi but no radio access (deep within a building).
It's too bad this phone doesn't have UMA - that would make up for T-Mobile's lack of indoor coverage (at times), and probably improve battery life a lot in some cases.
But I have to say that on another phones I've used, especially WinMo devices, using WiFi instead of 3G seemed to always use more battery. But, it could very well be different on this phone...I'm definitely going to give this a try.
im not sure about the percentage but i agree,the battery drain is considerably more when searching for radio.im in a building most of the day and it doesnt take long.miss the UMA i had on my bberry.
Paul22000 said:
Interesting. Did not know this!
I guess I won't feel so bad about leaving my phone on Wifi all day!
Also, does anyone know how much power is used by not having a radio signal and letting it constantly search? That seems to destroy my battery. But sometimes I am in an area with wifi but no radio access (deep within a building).
Click to expand...
Click to collapse
I also Get. About 25% better battery on wifi
Well after 10hrs of the phone being on stand by I woke up. It was at 46%!! my god. Anyway I checked my email, read an article all taking around 15mins and guess what? I had 30% left!. I put it back to stand by for 3hrs and took a look at it and had about 16% left...
It is now charging after one hour with just 10min use of downloading apps ..Can ANYONE tell me why my battery is draining so much on wifi? When its on EDGE for the night after 10hr I would have around 70% left from a full charge. Anyone can help me out here?
I shall be getting a replacement battery for free Tuesday.
Stock android.
ram130 said:
Well after 10hrs of the phone being on stand by I woke up. It was at 46%!! my god. Anyway I checked my email, read an article all taking around 15mins and guess what? I had 30% left!. I put it back to stand by for 3hrs and took a look at it and had about 16% left...
It is now charging after one hour with just 10min use of downloading apps ..Can ANYONE tell me why my battery is draining so much on wifi? When its on EDGE for the night after 10hr I would have around 70% left from a full charge. Anyone can help me out here?
I shall be getting a replacement battery for free Tuesday.
Stock android.
Click to expand...
Click to collapse
Did you set your phone to only use 2G networks also? If you're not charging, wifi will probably disable after not being used for a while..so it's probably rolling to 3G if you haven't disabled it.
I'm not saying it's convenient to constantly switch back and forth... but this explains why it may not be a good test of the battery life the way you're running it.
uansari1 said:
Did you set your phone to only use 2G networks also? If you're not charging, wifi will probably disable after not being used for a while..so it's probably rolling to 3G if you haven't disabled it.
I'm not saying it's convenient to constantly switch back and forth... but this explains why it may not be a good test of the battery life the way you're running it.
Click to expand...
Click to collapse
Well yes I have it on 2G only. Any thing else could be contributing to it dying so fast?
Well I found a way to use my laptop as an AP. So I connected my N1 to it and getting full bars(-41dBm) in my room now. No wifi disconnects so far!(maybe it was my linksys before ?).. So far the battery is at 86% with some 3D games, been unplug for 1hr 50min now. I'll put it to stand by now and see how it looks after 10hrs.
I'm on a stock firmware(not rooted). 2G only selected.
The way I understand it is as follows:
Phone is on STANDBY:
3g==2g* which are both more efficient then wifi (that's why the default wifi policy turns wifi off if it's not being used)**
Phone is ACTIVE:
wifi is more efficient then 2g/3g because:
1) It's waaay faster and thus causes less battery drain* and
2) The AP (router) is much closer to the phone then the cell tower so in theory it doesn't need to use as much power to talk to the router.
*http://code.google.com/events/io/2009/sessions/CodingLifeBatteryLife.html
4:45min into it there is a power usage chart and 3G/EDGE idle power usage is about the same - also somewhere else in the video they talk about wifi vs 3g usage when transferring data.
** http://code.google.com/p/sipdroid/wiki/NewStandbyTechnique
States that 3g standby is more efficient then wifi
drak0 said:
** http://code.google.com/p/sipdroid/wiki/NewStandbyTechnique
States that 3g standby is more efficient then wifi
Click to expand...
Click to collapse
Someone needs to test this ok. ...already testing wifi
Ok I'm at 11hrs 30min on wifi and its at 67% with light usage(checking email, news for 5min)..improvement? kinda, because since turning off my laptop it switched back to getting low signal(-81dBm) from the router in the next room. Weird? I'm still thinking. anyway I'm heading out so gonna use the phone more today, lets see if it gets me through the day.
Still no where near the thread starter 30hrs!! Maybe stock really sucks? bad battery anyone??
@ram130 I'm not sure how my battery is lasting as long as it has so far. I'm up to what would be an insane number, 65 hours 36 percent left .. this battery just wont die. I haven't the slightest idea how it's lasting this long I just leave wifi on all the time and turn wifi standby off. If anyone could explain how leaving wifi on more than quadruples my battery life I'd sure love to know.
Bought my Xperia just over a month ago, and installed juicedefender and juiceplotter to help manage my power use.
At first, I did the whole charging cycle thing, and managed to get battery life up to nearly 20 hours after a week! In the past few weeks however, my phone barely lasts 10 hours now...the battery dies before I can get a chance to recharge. I am a heavy user, but that doesn't seem to explain the sudden drop in battery capacity.
Because of the drop in power over the last few weeks, I have set EVERYTHING to not update, and google sync has been set to sync every other day.
Will my battery just continue to get worse? or do I have a faulty battery?
don't get me wrong, I love my new phone...I just need to know if this is a typical problem, or if I need to get a new battery.
Thanks!
Hi - I'm getting about 40 hours out of mine.. I tend to switch mobile data off when I'm at home as I use wifi.. the problem seems mainly to lie with 3G.. so when I'm out and about I switch wifi off and mobile data on.. but I tend to keep to 2G (GSM) for background syncing etc.. and switch 3G(GSM/WCDMA preferred) on when I want to do any active stuff.. like internet browsing of using the XDA app... I also have my Wifi sleep policy set to "sleep when screen is off"..
What do you use your phone for? if you can tell me a bit about how your using your handset I might be able to give you some more specific advice.
Thanks for the fast reply!
I use juice defender to switch off 3G when the screen is off. It connects every 15 minutes, could that be the issue?
I've looked for a way to switch to GSM, but I can't seem to do it with my carrier(don't have the option in my settings).
I use a lot of data, up to 3 gigs per month 3G only(on average). 4 or 5 calls a day, and probably 100 texts per day. I keep my screen at around 25% brightness.
If you can't switch to GSM then maybe try switching mobile data off all together when you're not using it..(when travelling etc)... (far from ideal I know!).. but it might help.. I think that the 3G radio isn't sleeping properly.. the new software update which is due out anytime now MIGHT solve it.. but only if you're either on an unbranded handset (sound like you're not) or your carrier pushes the update through to you...
The other things you can try is to switch off "Search for updates automatically" in the phone settings... and switch of determine location by wireless networks (in the location settings menu)..
There was a thread about auto brightness causing constant cpu drain, leaving it autobrightness is thought to be battery kind`er.
Ive stopped using task managers and just use default android control and its good for my battery. I check the ram availability occasionaly and though it gets down to around 30 or 40 or meg it shows no slowdowns or hangups but I do reboot after charging every other night.
I'm experiencing similar behavior: poor, then good, then poor, then good again, of course with similar usage. I don't use any task killer and have 3G always on. I have tried 3 different batteries: the stock one, the one from my X1, and the 1800 mAh from Mugen: same pattern with every battery.
I definitely think that there's something bad in the design of the power circuitry and/or in the kernel.
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
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.
Click to expand...
Click to collapse
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.
Click to expand...
Click to collapse
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!
Click to expand...
Click to collapse
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
Click to expand...
Click to collapse
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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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.
How do ya do it?
at most ive gotten bout 20
MINIMAL use (I.e. no browser).
Yes, anyone getting that much battery is running minimal services with < 10% wake time.
I usually get about 14 hours.
I keep my brightness on auto,
surf the web randomly,
I don't turn off auto-sync,
I watch videos, stream Pandora to my car stereo over Bluetooth,
sync 2 email accounts,
send and receive about 20 texts a day,
my facebook and twitter widgets sync once an hour and sometimes I manually sync them in between,
my Tech-Buzz widget syncs once an hour,
Beautiful Widgets syncs once an hour,
I use whatever wallpaper I feel like using on any particular day(some people think black saves power),
On some days I use Navigation and that knocks my usage back by an hour or two if I don't plug it into the car charger while using it.
I refuse to cripple my phones capabilities, or sit it down all day just so I can say I get 30 hours of battery time. If I need more than 12-18 hours, I have 3 spare batteries ready to go.
Disclaimer: DI8 has really reduced my battery life, however I still can get 2 days if I stretch it, and am *always* at around 70% at the end of a normal day. On my last charge before DI8 I was still at around 50% after 36 hours, with normal use.
What I do:
* Wi-fi always on, never sleep
* 4G off unless I know I'm in a 4G area, then on (it stays off anyway if I've got wi-fi)
* GPS off
* DRM and all other non-essential services off
* Screen brightness 1 or 2 ticks above minimum
* Kill only apps that I know are hogs (Google Nav, for example), leave all others alone to do what they want, use ATK as little as possible
* Airplane mode workaround for TWS
I also just don't use a lot of apps that I know are going to potentially prevent the phone from sleeping or otherwise hog up the battery if they happen to start up in the background randomly. I just don't have apps like that. Some people install all sorts of weird crap on their phones that does god knows what, I generally will only install stuff where I know exactly what it does. I also don't run a lot of widgets that check stuff in the background, although I do run Twitter and Facebook.
I am sure I don't use my phone as much as some people here, but it's wrong to assume people who get good battery life just don't use their phones. I make no real attempt at not using my phone; I use it whenever I want. That includes making calls, browsing the web (with one of three browsers), sending text messages or writing emails, using navigation in my car, and playing games.
Of all the things I do with my phone, the only thing I've noticed really super-killing my battery is GPS and navigation. That burns the battery at a rate of about 20% per half hour, which is about as long as I normally use it. But even if I use the GPS for an hour in a day, I can still get about 24 hours out of the battery if I need to.
I'm convinced wi-fi still really helps, and I'm set up so that *most* of the time I have wi-fi. I have wi-fi at home, at work, and actually on most of my route to and from work (my cable company has free wi-fi if you're a cable subscriber). I don't know how good my battery life would be if I didn't have that.
I use to get 20-25 hours easy, now I'm lucky to get maybe 8-10
daazncandyman said:
I use to get 20-25 hours easy, now I'm lucky to get maybe 8-10
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Same here. Using stock DI18, rooted, mixup kernel with ondemand setcpu and juice defender (it was 5 hours b4 juice dfender installed.
Turned off the DRM service, automatic brightness. That's it. Stock everything else!
I've got GV and talk always on.
I"m a light user; sent 50+ text messages, occasionally check my email, and push email every hour.
At 40% battery life I have 2 days of battery life.
In the background I have
5 essential stock services running
digital clock wdiget
voicemail
email app
switchpro widget
My running time is 5.5% (lol), with display on 2 hours (auto-brightness), 3G on 10 hours, wifi on for the remaining time (Wi-fi policy never sleep), and TWS 0% (airplane mode trick).
Also, if you run wifi make sure you set the sleep policy to never. I'm using the DI18 update and when I turned my phone on I saw the 3G icon in the notification bar when there should be the wifi icon. Setting the wifi sleep policy to never will stop the phone from using 3G when the screen is off. NOT fixed in the DI18 update.
Attached my wallpaper lol
what exactly does wifi never sleep do to save battery ? also I seen it mentioned on a dif site, set it up that way and when the phone went off it appeared the wifi did also .. idk need a lil insight on that whole setting
dumpringz said:
what exactly does wifi never sleep do to save battery ? also I seen it mentioned on a dif site, set it up that way and when the phone went off it appeared the wifi did also .. idk need a lil insight on that whole setting
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Normally, wi-fi uses a lot less battery life than 3G, so sometimes you want to use wi-fi and not 3G.
You set wi-fi sleep policy to "never," so that when you have wi-fi turned on and the phone goes to sleep, it won't turn off the wi-fi and turn on 3G. So the phone only uses wi-fi and "never" switches to 3G.
You have to manually change this in the advanced settings.
I don't know if it's something I downloaded which is eating my battery. I guess I'll try to do a hard reset, if that doesn't solve it, time to root
I can't get more than 8 hours on this..any suggestions to increase it?
I never get to 10 hours but I use my phone constantly. I on average use two batteries a day. I believe I should get the most out of my phone, I am paying the monthly fee, why restrict myself cause my phone will have a dead battery, I always carry a spare.
Sent from my SPH-D700 using XDA App
Coin Slot said:
I never get to 10 hours but I use my phone constantly. I on average use two batteries a day. I believe I should get the most out of my phone, I am paying the monthly fee, why restrict myself cause my phone will have a dead battery, I always carry a spare.
Sent from my SPH-D700 using XDA App
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Same here, I got 2 batteries off of ebay so I use the hell out of my phone. Brightness is on max to show off that screen, stereo bluetooth and pandora,4g is always on, live wallpapers and browse internet and play games a lot (angry birds mostly) . Battery lasts me 7 to 8 hrs which is amazing based on how much I use it. If u are doing normal use and getting 8 hrs then something is wrong, ur maybe not in 4g and 4g is ona nd ur wasting batt looking for signal oor something else. Maybe u have a service running in the background. I removed media hub and drm bc I heard they run a lot, but I never did a proper b4 and after comparison so not sure if it actually does help. I'm using noobs andromeda rom and d18 update.
Sent from my Epic 4G
Id be SO happy if I could even get 6 hours off one charge.
I'm lucky to get more than 3hours these days from 100 to 15%. :\
I did have a lot of widgets, but I removed a majority of them. I NEVER have wifi, 4G, GPS or sync on. My brightness is always set to 0%.
I guess I just use the phone too much! I don't mind because I usually am able to get near a wall outlet to charge my phone in the middle of the day.
But I'm worried about tomorrow, where I'm leaving at 8am and not getting back till 6pm with NO ACCESS to any wall outlets. I'm pretty sure I'm not gonna make it. Lol.
posted from a EPIC4G.
I'm convinced that with regular use you are gonna get 8-10 hrs on a full charge. Hell by 8 hrs you are going need to start charging unless you want to wait until the phone dies so you can claim x amount of hours.
There is no point in turning off everything on your phone and barely using it to say it lasts 20 hrs. Get a charger for work, home and your car. It is what it is.
I wake up at 6am, charge by 2 pm when battery is around 30%.
the problem with this phone bottom line is that 3g is eating the battery life. I set wifi to always on and I'm always on wifi in the house. I can get 12-14 hours sitting in my house. whoopie doo. Thats not hte point of the phone, the point of the phone is to have mobile service, not wifi service. anyone that is getting 30 hours out of the phone is using wifi. So thats not even a fair comparison. I love the phone, but this is just stupid, I shouldn't have to carry a spare battery with me if I go to the daytona 500 from 9am to 9pm.
robl45 said:
the problem with this phone bottom line is that 3g is eating the battery life. I set wifi to always on and I'm always on wifi in the house. I can get 12-14 hours sitting in my house. whoopie doo. Thats not hte point of the phone, the point of the phone is to have mobile service, not wifi service. anyone that is getting 30 hours out of the phone is using wifi. So thats not even a fair comparison. I love the phone, but this is just stupid, I shouldn't have to carry a spare battery with me if I go to the daytona 500 from 9am to 9pm.
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Yeah 3G does eat more battery life than wi-fi but that doesn't mean you can't have great battery life with 3G on all the time. I can get 1-2 days with 3G on and with light use, but that's in part because I get a good 3G signal.
I probably emphasized too much on wi-fi but the point I'm trying to make is try to avoid using a weak connection. Generally, I use wi-fi/3g/4G in my home but inside most buildings they'll most likely have weak 3G and 4G connections, so I use the wi-fi network inside the building.
You said you could get 12-14 hours with wi-fi and not touching the phone? I'm not trying to be rude but that seems really low. If mines idle on wi-fi in my home it lasts days. With 14 hours idling, that means the battery life drops 7% every hour. Idling on wi-fi I think it should only drop 1-3% per hour.
Mind if you go to settings -> applications -> running services and post what you have?
i get twenty four hours on average a full day so to speak wake up it says fully charged i take it off check twitter and facebook leave the house and dont touch it until i am at school bored in class lol and then it says 95 after a full day of class it usually says 66 thats after 9 hours i go home play with it download apps etc make several calls and i text alot all day by the way and then i go to work and it says 50 or about 48 usually i use it all night off and on til i get home at seven my wife kills the battery and puts it on the charger while i sleep usually about 9