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Old August 4th, 2012, 12:09 PM   #1 (permalink)
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Default Battery Draining at night

Just got the Nexus Galaxy and I love the phone except for the battery problems I have experienced. I played around with the phone when I first received it and drained the battery down. Then I charged it back up to about 95% and unplugged it, set an alarm and went to bed. When I woke up about 9 hours later the alarm hadn't gone off due to my phone being completely dead. It drained a full charge overnight. I had turned wifi and bluetooth off before going to sleep and also had syncs set to off. Just wondering what other settings I can change to improve overnight battery life or what I can do to fix this issue. I'm thinking that it may be draining some due to a low connection in my area, but surely this alone wouldn't cause it to drain a full battery.

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Old August 4th, 2012, 12:28 PM   #2 (permalink)
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DON'T turn off wifi. If your connecting isn't strong where you are, the phone will boost its signal and hunt for another tower all night long.... and as you saw, it will kill your battery. If you are in wifi range you should ALWAYS keep wifi on. Wifi uses the least power for data.... lower than 3G and way lower than 4G LTE. Also, leave your phone plugged in overnight. There is no reason not to. Today's electronics manage the battery charging process. Better to wake up with a full charge every morning, especially since this phone is not the best as far as battery life.

For more battery tips/help see below...
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Old August 4th, 2012, 12:29 PM   #3 (permalink)
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That's a bummer. When you plugged the charger in, and got the phone to boot up, did you check battery usage to see what the offending app was? There is really no reason why the battery should drain like that overnight.

Maybe there was something causing your phone to stay awake the whole time. (battery usage screen should tell you awake time).Try rebooting your phone and see if the problem recurs.
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Old August 4th, 2012, 12:45 PM   #4 (permalink)
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Is it really okay to leave a phone plugged in all night? I've read elsewhere that not fully charging the phone to 100% and not letting it drain to very low levels will prolong the batteries life. Also when looking at the battery page with the chart it shows my phone being awake many times throughout the night, often lining up with my network signal bar dropping into the red, but also just being awake many other times throughout the night at random points.
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Old August 4th, 2012, 12:59 PM   #5 (permalink)
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Is it really okay to leave a phone plugged in all night? I've read elsewhere that not fully charging the phone to 100% and not letting it drain to very low levels will prolong the batteries life. Also when looking at the battery page with the chart it shows my phone being awake many times throughout the night, often lining up with my network signal bar dropping into the red, but also just being awake many other times throughout the night at random points.
It's perfectly safe to leave it plugged in overnight. If you have severely bad signal either leave WiFi on and sleep policy for it set to never, leave it plugged in, or use airplane mode overnight. In most cases you won't need to do anything to "prolong" your battery's life. As long as you don't insanely abuse it, or it isn't defective, in most cases it should outlive your contract no problem.
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Old August 4th, 2012, 01:27 PM   #6 (permalink)
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Your best bet is to download and use Better Battery Stats. Be sure to read the first post completely and possibly even peruse the rest of the thread. When you figure out how to get a Better Battery Stats dumpfile posted, then you can post it there (or here) so that someone can help you figure out what's happening with your phone and if you have any partial wakelock issues.

[APP] [04 Aug - V1.9.2.1] BetterBatteryStats adds battery history back to Android - xda-developers

Note: The app download is in the second post (see the very very very bottom of the second post... it's an attachment!).
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Old August 4th, 2012, 02:10 PM   #7 (permalink)
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Guys. He doesn't need to find a rogue app. He needs to leave wifi on and keep plugged in. He said himself his phone was awake when his signal dropped. And yes, a weak signal can kill a phone in 8 hours no problem.

As for battery life, the phone manages all of that. Your phone will never actually charge to 100% even if it says so. It will also never really run to zero either. The phone is setup to manage the battery to balance day to day battery capacity while maximizing the long term life of the battery.
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Old August 4th, 2012, 02:13 PM   #8 (permalink)
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That's fine. Kinda what open forums are for... so everyone can chip in and offer different things for an OP to try. Doesn't matter who's wrong or right, only that the OP can figure things out by trying the different things offered.
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Old August 4th, 2012, 06:07 PM   #9 (permalink)
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It's perfectly safe to leave it plugged in overnight. If you have severely bad signal either leave WiFi on and sleep policy for it set to never, leave it plugged in, or use airplane mode overnight. In most cases you won't need to do anything to "prolong" your battery's life. As long as you don't insanely abuse it, or it isn't defective, in most cases it should outlive your contract no problem.

Could I just turn my Mobile Usage off at night when going to sleep to help prevent the battery from draining during the night? I do not need any of the data dependent functions when asleep and can just sync the phone back up once I wake the next morning. If I'm not mistaken the phone seems to switch back and forth between 3 and 4g as well as occasionally lose the signal for 3g depending on the location inside my house. I believe this may be the cause of the quick drain over the span of a night. If I disable data overnight would you think this would help or would a somewhat low signal aside from the data functions of the phone still drain the battery? I usually have 2 bars in my bedroom.
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Old August 4th, 2012, 06:22 PM   #10 (permalink)
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Quickest way would be to tell us what the #1battery using app was.
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Old August 4th, 2012, 06:33 PM   #11 (permalink)
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crazyion,

Do you have an aversion to using wi-fi as suggested above? It's the best way to keep everything syncing and uses the least amount of power.
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Old August 4th, 2012, 10:12 PM   #12 (permalink)
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crazyion,

Do you have an aversion to using wi-fi as suggested above? It's the best way to keep everything syncing and uses the least amount of power.
I just want the least amount of drain possible and figured with everything off it would be less than with wifi on. I don't care about syncing or having data at night.
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Old August 5th, 2012, 03:36 AM   #13 (permalink)
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Low signal will drain, WiFi or not, if your cell signal is so low that it's dropping out during the night. Stay on charger or use airplane mode.
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Old August 5th, 2012, 07:45 AM   #14 (permalink)
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Where I work my signal is horrible and the battery won't last an 8 hour work day, even if I don't us it.

After I installed a WiFi router, 8 hours uses 20% of the charge.

Go with the WiFi option.
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Old August 5th, 2012, 09:18 AM   #15 (permalink)
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Why do you not want to leave your phone on the charger overnight? Unless you have a limited data plan, leaving it on the charger over night will solve all your problems!!!! I have had this phone since the beginning of January and I charge it over night every night. My battery lasts anywhere from 11-17 hours depending on how much I have to use it during the day. I have had no battery loss from this. I don't use the wifi method because I have unlimited data, but as soon as I have to change to the Verizon shared data I will have my wifi on all the time.

Leaving it on will not hurt the battery....the new batteries have sensors that will prevent over charging......it will just maintain your full charge.
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Old August 5th, 2012, 10:08 AM   #16 (permalink)
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Signal strength has nothing to do with the battery drain.
It is the apps that are probing. Change your settings and kill the apps that are doing this.

Apps that use GPS,facebook crap,etc... will kill the battery.

If your settings are set correctly, Your idle time should not drain more then 5% in an 8hr period.
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Old August 5th, 2012, 12:05 PM   #17 (permalink)
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Signal strength has nothing to do with the battery drain.
It is the apps that are probing. Change your settings and kill the apps that are doing this.

Apps that use GPS,facebook crap,etc... will kill the battery.

If your settings are set correctly, Your idle time should not drain more then 5% in an 8hr period.
uploadfromtaptalk1344186126729.jpg

Signal strength has EVERYTHING to do with battery drain in his situation, as well is a major factor for battery life in general.

Killing apps doesn't save battery. Limiting the number of "running services" does. Remember, there's a difference between an app/data being cached and an app/service "actually running" in the background.
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Old August 5th, 2012, 05:25 PM   #18 (permalink)
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Quote:
Originally Posted by Zeinzu View Post
Attachment 37132

Signal strength has EVERYTHING to do with battery drain in his situation, as well is a major factor for battery life in general.

Killing apps doesn't save battery. Limiting the number of "running services" does. Remember, there's a difference between an app/data being cached and an app/service "actually running" in the background.
I guess we are both on the right track.
I have a 100-120dbm signal and I only lose about 5% of my battery life over night when the phone is idle. <<< wifi is off, blue tooth off, and GPS off.

Look under settings---Location services. Turn this off and you will increase your battery life by 50+%.
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Old August 5th, 2012, 05:58 PM   #19 (permalink)
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I shut off my data last night and went to bed with the wifi off as well. Woke up to a phone that had only drained about 7% so I was happy with that. Thanks for the help and in my case I guess the big killer when it drained in one night was my phone switching back and forth between 3 and 4g during the night and constantly looking for data signals.
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Old August 5th, 2012, 07:59 PM   #20 (permalink)
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Just leave the phone plugged in overnight. While its true that leaving Lithium Ion batteries at 100% all the time will destroy battery life, its not worth micro-managing for the risk of having the phone nearly dead by morning. Having your phone die within 8 hours in standby isn't normal though, which probably means you have signal or an app keeping the phone awake. Either way, for now, leave it plugged in.
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Old August 5th, 2012, 10:48 PM   #21 (permalink)
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I plan on just leaving data off all the time as I'm around a wifi signal about 99% of the time, and flipping it on when I'm on the road and need it isn't really what I would call a "micro-managing" hassle. Wifi can be flipped on or off with the touch of a button on the home screen so that's no big deal either. I realize I could just leave the phone plugged in overnight now with these current lithium batteries but prefer not to as I like having the phone physically in my bed as the vibrate on the mattress wakes me up in the morning better than on my nightstand. But regardless I figured out what was wrong, so thanks for the help and all the suggestions everyone.
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Old August 5th, 2012, 10:51 PM   #22 (permalink)
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Quote:
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DON'T turn off wifi. If your connecting isn't strong where you are, the phone will boost its signal and hunt for another tower all night long.... and as you saw, it will kill your battery. If you are in wifi range you should ALWAYS keep wifi on. Wifi uses the least power for data.... lower than 3G and way lower than 4G LTE. Also, leave your phone plugged in overnight. There is no reason not to. Today's electronics manage the battery charging process. Better to wake up with a full charge every morning, especially since this phone is not the best as far as battery life.

For more battery tips/help see below...
This is strange. When reading articles about battery saving tips. I saw often the advice of turning WiFi OFF. Here are the two first hits I got by Google search results:

How To Increase Your Smartphone Battery Life? | The Big Fat Reality
10 Ways to Boost Your Smartphone's Battery Life | PCWorld Business Center

Can you and other users please confirm that turning WiFi ON is better for battery life?
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Old August 5th, 2012, 11:23 PM   #23 (permalink)
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This is strange. When reading articles about battery saving tips. I saw often the advice of turning WiFi OFF. Here are the two first hits I got by Google search results:

How To Increase Your Smartphone Battery Life? | The Big Fat Reality
10 Ways to Boost Your Smartphone's Battery Life | PCWorld Business Center

Can you and other users please confirm that turning WiFi ON is better for battery life?
I can confirm that WiFi on is always better than 3G or 4G for battery and always has been. The issue is that most phones were set to have WiFi sleep with screen off by default, and users were unaware, so they assumed WiFi was giving them crappy battery.
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Old August 6th, 2012, 09:57 AM   #24 (permalink)
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Absolutely. Wifi uses much less energy. Not even close with 3G and 4G.

The reason people tell you to turn off wifi is because it may use a tiny amount of energy if you are somewhere that DOESN'T have wifi. Both articles posted say "when not in use" implying that either there is no Wifi or you aren't using it. But the point is that your phone is going to use a data connection whether you are using the phone or not.....and its better to use Wifi than 3G/4G. So if you are out at work with no wifi, your phone will use 3G/4G....so having wifi ON will waste a little battery. If you are at home with Wifi, having Wifi ON will save your battery compared to leaving the phone on 3G/4G only.
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Old August 6th, 2012, 11:32 AM   #25 (permalink)
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Absolutely. Wifi uses much less energy. Not even close with 3G and 4G.

The reason people tell you to turn off wifi is because it may use a tiny amount of energy if you are somewhere that DOESN'T have wifi. Both articles posted say "when not in use" implying that either there is no Wifi or you aren't using it. But the point is that your phone is going to use a data connection whether you are using the phone or not.....and its better to use Wifi than 3G/4G. So if you are out at work with no wifi, your phone will use 3G/4G....so having wifi ON will waste a little battery. If you are at home with Wifi, having Wifi ON will save your battery compared to leaving the phone on 3G/4G only.
Oh wow, thank you for the explanation. Can you please clarify for the following scenarios:

1- Outside of home. There are free WiFi available, example close to coffee shops. But I decide not to connect to these networks and use 3G instead. Should the "WiFi ON" still consume some energy? I suppose yes as you explained above.

2- Inside home, but in a corner where WiFi reception is weak. The icon shows 1 or even zero bar. Is it still economic to leave WiFI on? BTW, I continue to receive data pretty OK. How do I know if the data came from WiFi or the phone network?
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Old August 6th, 2012, 12:33 PM   #26 (permalink)
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Oh wow, thank you for the explanation. Can you please clarify for the following scenarios:

1- Outside of home. There are free WiFi available, example close to coffee shops. But I decide not to connect to these networks and use 3G instead. Should the "WiFi ON" still consume some energy? I suppose yes as you explained above.
Technically, yes, but really I don't think you'd notice. I NEVER turn WiFi off, ever. And I get plenty of battery life. Wifi barely even registers on my battery usage. I've had WiFi on for 6 hours and its consumed 2% of my battery life.... and that's with several hours of actual wifi use streaming Sirius at home.

Quote:
2- Inside home, but in a corner where WiFi reception is weak. The icon shows 1 or even zero bar. Is it still economic to leave WiFI on? BTW, I continue to receive data pretty OK. How do I know if the data came from WiFi or the phone network?
Yes, leave it on. If the phone can connect to wifi and get the data that way, it will. If it cannot get wifi reception it will defer to 3g/4g to get the data. Let the phone decide. You want it to use wifi as much as possible, and it will try to do so if possible.
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Old August 6th, 2012, 04:33 PM   #27 (permalink)
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Quote:
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Technically, yes, but really I don't think you'd notice. I NEVER turn WiFi off, ever. And I get plenty of battery life. Wifi barely even registers on my battery usage. I've had WiFi on for 6 hours and its consumed 2% of my battery life.... and that's with several hours of actual wifi use streaming Sirius at home.



Yes, leave it on. If the phone can connect to wifi and get the data that way, it will. If it cannot get wifi reception it will defer to 3g/4g to get the data. Let the phone decide. You want it to use wifi as much as possible, and it will try to do so if possible.
I turn Wifi off when I'm out and about....but only because the OPEN WIFI NETWORKS FOUND notification is annoying.

Its like "thank you Android for being so helpful but I'm driving across town, I'm not interested in using wifi right now".

EDIT: Just remembered there is an option to turn that off. Derp.
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Old August 6th, 2012, 10:12 PM   #28 (permalink)
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batteries are cheap.

Leave wifi on when home, turn BT off when you're not using it and charge at night.

Turn wifi off when it's not available (like at work). 4g on or off depends on your signal. I get better life with it on b/c I have pretty good 4g in my area and the radio doesn't have to be on much.
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Old August 8th, 2012, 04:16 AM   #29 (permalink)
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My advice is to not be too concern for a few weeks. When I first got my GN it was draining like crazy overnight. Twice I charged full and woke up to a near dead phone. A few things will happen. One, ICS seems to figure out how to better utilize your battery over time. I had my phone sent out once for repair and when I got it back the battery life sucked again for 2 weeks then it got better. Second, you will slowly find things turned on that you don't need.

For me (not saying its true for everyone), when I turned off GPS it made a big difference. Keeping my phone on 3G and going 4G only when I need to download is a big big difference because my phone can't maintain 4G so its constantly bouncing back and forth.

If you have google backup on, it might be doing backups at night. Slowly install apps. So that if one of them is misbehaving you have a better idea which one it is.

My phone now uses about 8% of my battery over night.
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Old August 8th, 2012, 06:03 PM   #30 (permalink)
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Quote:
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If you have google backup on, it might be doing backups at night. Slowly install apps. So that if one of them is misbehaving you have a better idea which one it is.

My phone now uses about 8% of my battery over night.
Do you see big difference in battery life with google backup on/off? I always had it on, but recently my battery drain over night got worse. With Wifi on it used to be under 2% per hour, but now it's closer to 3% per hour at night.
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Old August 9th, 2012, 07:47 AM   #31 (permalink)
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Quote:
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Just leave the phone plugged in overnight. While its true that leaving Lithium Ion batteries at 100% all the time will destroy battery life, its not worth micro-managing for the risk of having the phone nearly dead by morning.
This is not a concern. The device actually manages the level of charge and does not hold a 100% charge. Once the charge hits 100%, the phone stops charging and actually lets the charge drain down close to 90% before bumping back up a few percent. It will continue this throughout the night, so don't worry about leaving it plugged in. This will do NO harm to the battery and will just make you crazy trying to micromanage your battery life.

Read this article for an in-depth look at what your battery is really doing when its recharging.
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The Galaxy Nexus is the third official phone contracted by Google and the first phone to come with Android 4.0 Ice Cream Sandwich. Specs include a 1.2GHz dual-core processor, 1GB of RAM, 16/32GB of internal storage, a 4.65 inch 720p HD Super AMOLED... Read More

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