Develop Bugs

Problem With Battery

Hey guys, I just got the droid incredible 2 and I first had the LG revolution but the 4g and the screen size made the battery drop down quick. I played with it for 20 minutes after it being fully charged, changing settings, and the battery went way down to about 80%. So I exchanged it for the HTC Incredible 2. They told me the batter was way better.
I went to the Verizon store to tell them the batter dowesn't last as long as expected. My Iphone 4 would be on all day, texting, pandora, email and web browsing and I still came home from work with battery left. My droid gets used from 7am to 1pm and its pretty much dead by then. They made me change the background data off, sync only email and weather, and download juice defender.
The batter still dies by 12:30pm after charging all night.
I have read all over people are getting excellent battery usage but I don't really know what to do to get the same. It is not temp rooted. Any ideas? Also, at work, in the building the data coverage is not so good so I usually do nothing but text on it and it still dies by 1pm.

I can't really say how well mine would do on the standard battery because I bought the extended battery immediately after getting the phone. I've been unplugged almost 15 hours and have 38% battery and I have sent/recieved 40-50 txts, 20 mins phone, browsed internet for 30-45 mins, played games around 30 mins, and listened to pandora for around 45 mins.
I would recommend the extended battery, it's $50 at verizon and I haven't even come close to killing it in a day.

Does the extended battery make the phone bigger? I'm thinking it would be thicker on the back. Would it have any drawbacks as to cases and stuff like that?
I'm not sure why mine is so bad, prolly because I am in a secure building and signal doesn't get through constantly. I'm surprised, I thought my iphone had bad battery.

the extended battery does have a thicker back. and yes, there are currently no cases for it, so there would be an issue there if having a case is very important.
as to your current battery, if your in a biulding with bad signal, that will most defintiely affect your battery life as your phone will have to use more battery to try to find a good signal. additionally though, the phone battery does seem to improve after about a week of charge/discharge cycles. not sure why this is, but i have seen it on my phone and seen many other report the same.

The battery sticks out a little more than 1/8th of an inch I would say. However, IMHO it protects the camera lens and flash lens from getting broken and I never really like using a case anyways.

I have amazing battery i charge it to 100 percent unplugged after then go to school texting 100-200 average everyday internet music by the time i get 3:00 i still have 80-70% and i'm 13 so imagine how much i use it and it still stays at that percentage

Having a phone in a building (or anywhere) the signal is weak is a drain on your battery. If your iPhone was with AT&T the signal may have been stronger where you work than with Verizon and may have therefore contributed to better battery life.
Also, if you didn't FULLY charge your DInc2 and FULLY discharge it right when you got it, you should really do a factory reset and immediately do the following:
Charge the phone for at least 8hrs with the power off, unplug for a few minutes, plug it back in. The light should only remain red for 10-20 seconds before turning green, otherwise this unplug-plug part should be repeated a few more times always letting it remain on "green" for an hour before unplugging an plugging back in.
THEN power up and use the phone until it shuts itself off because the battery is drained. Let it sit for a few minutes, and turn it on again. It should sut itself off again pretty quick. Let it sit, turn on again. Do this until it wont power up at all after sitting untouched for a few minutes and your battery is then fully discharged.
Now you can plug it in and start the charge part of the cycle as lined out earlier. Once the light turns green 10-20 sec after plugging it in again you have completed one "cycle".
This may sound excessive, but I'm kind of a nut about this kind of thing.

I didn't do anything special when I got my I2, am a realtively heavy user, and have an all day battery life. I'm pretty careless with my features being left on.
If you can't get it to last all day, either you are a much heavier user than I am or you do, in fact, either have a battery problem, or a battery calibration problem. You shouldn't need to calibrate the battery algorithms, but I guess it doesn't hurt to try.

I wouldn't say I am a heavy user. I normally text while I am at work and check facebook a few times. I also listen to pandora most times. I work for Vanguard and most people here have Verizon I believe. I was told when I switched from AT&T that signal should not be a problem where I am at. My Iphone 4 would get used much more and it too would have signal problems as well until I turned 3g off but it would last way longer than the droid.
I guess I can try the factory reset and full charge cycle this weekend but I'm not sure what Verizon can do for me either so it may just stay like this

this is bump charging no? (well the part about how to charge it). i spoke to am htc rep that said that bump charging will significantly decrease the lifespan of your battery life and therefore is highly not recommended.
TheAtheistReverend said:
Having a phone in a building (or anywhere) the signal is weak is a drain on your battery. If your iPhone was with AT&T the signal may have been stronger where you work than with Verizon and may have therefore contributed to better battery life.
Also, if you didn't FULLY charge your DInc2 and FULLY discharge it right when you got it, you should really do a factory reset and immediately do the following:
Charge the phone for at least 8hrs with the power off, unplug for a few minutes, plug it back in. The light should only remain red for 10-20 seconds before turning green, otherwise this unplug-plug part should be repeated a few more times always letting it remain on "green" for an hour before unplugging an plugging back in.
THEN power up and use the phone until it shuts itself off because the battery is drained. Let it sit for a few minutes, and turn it on again. It should sut itself off again pretty quick. Let it sit, turn on again. Do this until it wont power up at all after sitting untouched for a few minutes and your battery is then fully discharged.
Now you can plug it in and start the charge part of the cycle as lined out earlier. Once the light turns green 10-20 sec after plugging it in again you have completed one "cycle".
This may sound excessive, but I'm kind of a nut about this kind of thing.
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Click to collapse

I just got mine on Sunday, but even yesterday I was texting and surfing a fair amount yesterday and went to bed with the phone at 61%...
I am sort of amazed, I think Verizon has taken the underclocking thing and put it to work on the official release... at one point I turned off the screen for what amounted to an hour and when i turned it back on it was still the same battery level.

selayan said:
I wouldn't say I am a heavy user. I normally text while I am at work and check facebook a few times. I also listen to pandora most times. I work for Vanguard and most people here have Verizon I believe. I was told when I switched from AT&T that signal should not be a problem where I am at. My Iphone 4 would get used much more and it too would have signal problems as well until I turned 3g off but it would last way longer than the droid.
I guess I can try the factory reset and full charge cycle this weekend but I'm not sure what Verizon can do for me either so it may just stay like this
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if your comparing battery life on the dinc2 with 3G on versus the iphone with 3G off there will also be a pretty big difference. if your tuirn off 3G on your dinc2, i would imagine battery life will be similar or better than your iphone had with 3G off also.

bik2101 said:
if your comparing battery life on the dinc2 with 3G on versus the iphone with 3G off there will also be a pretty big difference. if your tuirn off 3G on your dinc2, i would imagine battery life will be similar or better than your iphone had with 3G off also.
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No I was comparing the Inc 2 to the Iphone with 3G on. My iphone would also last longer if I turned 3g off and just used Edge or whatever it is called. I don't think I can do this with the droid until it is rooted or download an app to do this.
I turned off juice defender and we will see how it goes today. I don't really like apps running in the background and it was turning off data eacht ime the screen locked.

I think the biggest difference is the verizon signal. The battery on this phone is amazing for an android device. While it is still nowhere near iphone 4 status as far as battery, it shouldn't drain like that. Have them either swap you a battery or the phone itself.
I'm a relatively heavy user. Especially with voice calls and I can go a day and a half easy.
But I also run launched pro with only a couple of widgets. To me sense is a battery hog.
Sent from my ADR6350 using XDA App

What would I do to go about swapping out the battery or the phone itself? Should I go back to the same verizon store? Or call them on the support line and try to get a battery or new phone that way? I have no clue why it is draining like that either, the signal can't be that bad, I literally had the same signal with AT&T in these buildings.

Well, lets be honest, one of the things Apple really puts a lot of time and effort into in their development is long battery life. It wouldn't surprise me to see the iphone outlasting most Android devices.
In any case...
While I don't need to, I do charge my phone while at the office. If you have a desk job then I don't see how this would be problematic. My work day usage includes 2 hours of bluetooth streaming (in my car to the stereo), media playback (music/podcast), and mapping with gps and 3g data (this drains my battery pretty quickly, but that's relative...it's about 15% per hour). Outside of that, my battery drain is quite low.
I only started charging at the office because I like to keep my battery as full as possible in case of extended emergency that requires being away from a charging source. It's that whole boy scout be prepared mentality I have. Besides, if you have the opportunity to charge, why not? It seems to charge pretty quick anyway.

I can charge at the office, but normally I forget the cord at home. Not a problem to buy another one but still. I was just concerned because I hear people getting 15 some hours on one charge and as of right now, my battery is below 50% since I just got back from lunch.

selayan said:
What would I do to go about swapping out the battery or the phone itself? Should I go back to the same verizon store? Or call them on the support line and try to get a battery or new phone that way? I have no clue why it is draining like that either, the signal can't be that bad, I literally had the same signal with AT&T in these buildings.
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take it back to the store, and if that doesn't work then call. but the store would probably be a better bet as they can give you a new phone or new battery there whereas the phone support, you'd have to wait for the shipment.

Seems as if they were not able to help in store the first time. Rather than have someone check it out, they had someone come over and tell me I should turn off all the sync and data features. So I did do that, but then why did I get a smartphone?

It's possible you have an app that is not allowing the device to sleep. If it can't sleep, it will drain the battery much faster. You might get 8 to 12 hours awake yet idle.
Are you using many third party apps? If so, have you considered going through them, removing them one at a time, until you find the battery doesn't drain so fast anymore?
If you go to About phone in settings, then Battery, the last item will show awake time. This should be much lower than your Up time.

First day with galaxy nexus

I have had this phone for less then 24hr and I love it. But I have been very conscious about the battery life and I feel that it drops every time I turn it on. I fully drained the 40% when it came with it in about 2 hours and today after letting it charge fully then taking it off at 100% for the rest of the night I lost 16% in about 7 hours. Since I woke up from 730-1130 I have went from 84%-50% off doing basically nothing. Edit (41% after I typed this post)
GPS-off
Wifi- off after I woke up at 7
Sync-on
Social-update once an hour
Email- once an hour
Sent from my Galaxy Nexus using XDA App

The battery needs a few charging cycles to achieve peak performance. I have a GSM nexus and the battery life has been excellent with default syncing.

After reading sfasu's post, it does make sence. I had mine for about 2 weeks...first few days the power dropped FAST. But now it has improved! I listened to music and played games while on 1hr subway ride today and it went down only a small amount....2 weeks ago it went down to 50%.

please note that the battery life performance experience differs with the CDMA and GSM version.
GSM version will get better battery life than the CDMA version due to the power hungry LTE chip.
like the other posters have said, wait a few days for the device to calibrate battery and assess battery life from then on.

The poster above makes a great point. I'd also like to add though that with my cdma version I turn LTE off and it seems to help battery life. I don't need LTE speeds while running Google nav.

If I leave my idle with the screen off and LTE ON I only lose ~ 20% over 8 hours. But if I have the screen on it seems like I lose almost 1% every minute or two.

as it's been said, if you have the LTE version, that will severely drop your battery even just email and basic sync can use massive amounts of charge on LTE.
if you have the GSM version, then most likely you just need to cycle the battery a few more times, or you have something in the background using more battery than it should.

I think at the end of the day the screen is always going to soak up more power than anything else. Any savings due to settings and updated firmware is going to be very minor.

Ya battery definitely adjusted. Getting about 24 hours a charge now.
Sent from my Galaxy Nexus using XDA App

WIFI battery usage

My battery usage for WIFI has never gone above 3% and has only hit that once, normally it is 2% no matter how little or much I use it. What percentage of your battery life is used by your WIFI?
I'm just trying to figure out if the number is accurate and using wifi really does save my battery as much as it appears to do so.
Sent from my Galaxy Nexus using XDA App

I've never really bought in to the whole Wifi saves battery power....I've had the Captivate and now the GN and anytime I leave Wifi on at home, my battery just drains faster. Here is an example, if I leave Wifi off, I've reached about 40 - 48 hours on one charge. If I take my phone off the charger at 6:00am....go to work with Wifi off, come home at 4:00pm and turn Wifi on, by the time I go to bed at 11:00pm my battery is at about 40-50%. In the first scenario with Wifi off, my battery is usually around 70% when I go to bed the first night.
In both of those scenarios, the phone is only being used lightly, but I do see a huge difference if I use Wifi in my overall battery drain. So pretty much these days I just turn on Wifi when I actually need it....but having a 6GB data plan helps in not caring when I use Wifi (for the day to day stuff).

I only use WIFI at home but otherwise have it off. I use Y5 to automatically turn in on when I'm home and off when I leave. It seems to really help me save my battery when at home though since my coverage is spotty since for some reason I cannot stay connected to 4G even though I'm surrounded by the coverage.
That's why I'm asking here if the meter is actually correct because even on the weekend if I'm home all day the meter never shows anything other than 2% after a full days use of downloading apps, surfing the web, messing around on Facebook, and reading things on forums. About 43MB worth of usage and 14 hours and 40 minutes of connectivity to WIFI.

[Q] Why does the cell radio drain so much battery?

Hi.
So now my father's phone appears to drop about 70% in 24 hours. The sad thing is it happens with no usage at all!! In fact the Wi-fi, mobile data, GPS, bluetooth were already disabled, brightness set to nearly-minimum and SetCPU to ~300MHz.
I checked the battery usage and this is what I found:
41% Cell standby (time without coverage 0%)
37% Phone idle
...
What should I do? I fail to believe that battery is suddenly so poor because not too long ago it, according to my father, it could stay for like 3 days.
ROM is quite old CM7.

Low coverage area? Phone will constantly search for stronger signal. Last week I was on top of 21 story building with poor signal all day, bursted through my battery easily in 4 hrs.

prananas said:
I fail to believe that battery is suddenly so poor because not too long ago it, according to my father, it could stay for like 3 days.
ROM is quite old CM7.
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Click to collapse
I believe that batteries can sometimes go from good to bad almost instantly than gradually. So I'm really not surprised that the battery runtime went poor all of a sudden.

[Q] Odd battery drain issue

Had my 900 about a week now, and in the first few days the battery life was looking good, lasting nearly two days with lots of texts, emailing, a few pictures taken and lots of talk time.
Then a couple of days ago it suddenly got worse. Started losing about 4% per hour. I charged it fully last night and then this morning nine hours later there was only 60% remaining.
I decided to try and find out what was happening. Found the diagnostics app and the battery drain was showing around 164mA. I don't have anything running that could be using so much power, so I wondered if I was suddenly getting a poor 3G signal and the phone was using a lot of power trying to receive it. So I put it into flight mode. Still around 164mA.
Finally I powered the phone off and then back on. Now it srttled down to around 95mA.
So what was running that was using so much power, that got switched off when the phone powered off? Could it be the GPS? I did fire up Nokia Drive and Nokia Maps the other day to play around with them. Could it be that the phone forgets to turn the GPS off when the apps that use it aren't running?

redwhiteandblue said:
Had my 900 about a week now, and in the first few days the battery life was looking good, lasting nearly two days with lots of texts, emailing, a few pictures taken and lots of talk time.
Then a couple of days ago it suddenly got worse. Started losing about 4% per hour. I charged it fully last night and then this morning nine hours later there was only 60% remaining.
I decided to try and find out what was happening. Found the diagnostics app and the battery drain was showing around 164mA. I don't have anything running that could be using so much power, so I wondered if I was suddenly getting a poor 3G signal and the phone was using a lot of power trying to receive it. So I put it into flight mode. Still around 164mA.
Finally I powered the phone off and then back on. Now it srttled down to around 95mA.
So what was running that was using so much power, that got switched off when the phone powered off? Could it be the GPS? I did fire up Nokia Drive and Nokia Maps the other day to play around with them. Could it be that the phone forgets to turn the GPS off when the apps that use it aren't running?
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Click to collapse
Not sure forgets is the right answer, but you may want to look at the Background tasks and see what is running when it shouldn't.
I know when I add a new app or 2...sometimes I get myself in a position where the battery drain becomes excessive. I usually just unistall the app. You've probably read a few of the battery threads here. If not, take a look. Lots of good conversation about ...well....lots of things....
For me, the biggest drain is Wordament....and its ads....I'll wipe out my battery in an hour playing that thing....

Just finished a series of tests for Background Tasks in my L900 (full article on Mobility Digest). 8 Background Tasks running burns 0.5% per hour, or 8% in a 16 hour day. Tasks included: USA Today, Fox News, Weather Channel, Urban Dictionary, Mehdoh, Network Dashboard, Clever-To-Do and Battery Meter (homebrew app that actually runs every 10 minutes vs. 30 minutes, or longer).
Except for short spikes, my phone always hovers in the 95 to 125 mA range. Data signal is still the biggest battery demon while phone is asleep. Screen while phone is awake.
Sent from my Lumia 900 using Board Express Pro

Overnight my phone seems to have used less than 1% per hour, that's with wifi on but not connected to any network. Perhaps I'll see what it does with wifi off.
I'd still like to know what it was that was draining the battery until yesterday when I power cycled it. I only had the App highlighter app and the Weather Channel app running in background, and I've since disabled the App Highlighter. But they weren't using 4% of the juice per hour. I didn't have bluetooth on.
I guess if anyone is seeing a high battery drain the simple answer is to try power cycling your phone first and see if that stops it.

jimski said:
Just finished a series of tests for Background Tasks in my L900 (full article on Mobility Digest). 8 Background Tasks running burns 0.5% per hour, or 8% in a 16 hour day. Tasks included: USA Today, Fox News, Weather Channel, Urban Dictionary, Mehdoh, Network Dashboard, Clever-To-Do and Battery Meter (homebrew app that actually runs every 10 minutes vs. 30 minutes, or longer).
Except for short spikes, my phone always hovers in the 95 to 125 mA range. Data signal is still the biggest battery demon while phone is asleep. Screen while phone is awake.
Sent from my Lumia 900 using Board Express Pro
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Cool! I'd love to see a wifi vs cellular data battery benchmark.

Well that would be hard for background activities as WiFi goes to sleep at power off.
I did try to use LTE only for a couple days, but AT&T did not start reporting my daily data usage on my monthly anniversary data. I wanted to see how much data I was using over a typical week with LTE only. On can tell you in those two days, LTE was burning 20-30% (13% per hour on WiFi / 17-18% per hour over LTE) more power per hour when the screen was on and I was browsing or using Board Express. A more comprehensive teat will follow though.
Sent from my Lumia 900 using Board Express Pro

jimski said:
Well that would be hard for background activities as WiFi goes to sleep at power off.
I did try to use LTE only for a couple days, but AT&T did not start reporting my daily data usage on my monthly anniversary data. I wanted to see how much data I was using over a typical week with LTE only. On can tell you in those two days, LTE was burning 20-30% (13% per hour on WiFi / 17-18% per hour over LTE) more power per hour when the screen was on and I was browsing or using Board Express. A more comprehensive teat will follow though.
Sent from my Lumia 900 using Board Express Pro
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The above somewhat proves how cellular data can often be a big battery drain comparable to abundant wifi at home or other common places. Looking forward to ur tests.

Well the battery drain problem came back yesterday.
The phone has done pretty well however, with very light use (one short call, a few texts, checking FB, checking the weather and not much else) the battery is at 24% after 48 hours. Overnight it went through about 8% in nine hours.
However, yesterday evening I noticed that the battery was losing 4% - 5% per hour again. By yesterday morning it was at 70% after 24 hours. After another 9 hours it was down to 43%. That's having made no calls, only a couple of texts, and very little else. At 9.30pm I checked the diagnostics app and battery drain was over 200mA. There was no obvious reason why it would be so high. So I powered the phone off and back on again, and sure enough, battery drain settled back down to between 90 and 110 mA, and as I said, overnight the battery lost less than 1% charge per hour.
The only background task I have enabled is the Weather Channel app. I'm going to let the battery run right down, recharge it, uninstall this app, and then see if I can repeat this pattern (if people will hold off from calling me!) If it's not this app then there must be something else, something in the firmware that goes haywire after a certain time and starts using lots of power.
I note that some people have observed that the battery starts to drain quicker after a while. I'd be interested to know if anyone can repeat the same pattern I'm seeing.