Battery life is important for mobile devices. Questions regarding battery life should use this tag.
4
votes
1answer
561 views
Auto sync only when connected to a specific wifi network
I am getting rather low battery life when using auto-sync on 3G. I have wifi in college and at home, so I'm looking for a way to enable auto sync only when connected to those 2 specific wifi networks.
...
2
votes
2answers
3k views
Can I permanently disable the cell/radio of my phone?
My wife got a new phone with a new service, so I get to have her old phone to play around with.
Since the old phone no longer has cell phone service, I want to completely disable the cell phone or ...
1
vote
1answer
2k views
How much battery savings to expect from SetCPU? [closed]
Has anybody done any serious measurements as to effects of SetCPU (or a similar power-saving app)?
I mean, are Google and Linux developers really that stupid not to properly implement power ...
10
votes
3answers
7k views
Mediaserver using excessive CPU time and battery
I've got a Nexus 4 on OS version 4.2.1 that suddenly started to drain it's battery very quickly. When looking in the battery usage I see "Mediaserver"eating 60% of the battery over time, with several ...
14
votes
3answers
8k views
How to deal with (orphaned) WakeLocks?
I guess most of you at least have heard about WakeLocks. Many of you will have experienced them already -- wether knowingly or not. Some may know how to deal with them in general -- but only few know ...
6
votes
2answers
3k views
Google Services is killing my battery by keeping phone awake
In the last few days my Galaxy S3 has gone from lasting 12-13 hours to about 6 hours. On checking the battery monitor it seems to suggest that the phone is constantly staying awake and that Google ...
0
votes
0answers
209 views
Does battery life of a screen depend upon number of pixels or screen size? [closed]
I was curious.
I know that for two screens of the same size and type, the one with higher pixel density will consume more battery.
But what if there are two screens with the same resolution but ...
1
vote
1answer
647 views
Is using chargers of phone not meant for it harmful to the battery? [duplicate]
Possible Duplicate:
Is my phone liable to explode if I charge it with a charger that came with a different phone?
Are Android chargers universal in terms of power (Voltage, amperage)?
As ...
0
votes
0answers
154 views
Samsung Skyrocket - Maximize Battery?
I have tried a few alternative ROMs, and underclock using SetCPU, but I can't seem to find a truly effective way to have my Samsung Skyrocket's battery last for more than a day. My average usage time ...
1
vote
0answers
329 views
Unexpected battery discharge on Samsung Galaxy S2
I charged my smartphone yesterday to full 100%. When I woke up today, I saw that battery was 40%. Android OS has used 90% of the battery. My Android version is 4.0.3. What is the cause of the problem?
...
0
votes
1answer
382 views
Android clearing recent applications list
After exiting the applications on my Galaxy nexus, they appear on the recent applications list. Do they still use CPU/battery? Do I have to remove them from recent applications list in order to save ...
0
votes
3answers
4k views
Battery drain with in no time in Samsung Galaxy Ace
I have Samsung Galaxy Ace for almost an year now. The battery of my phone get discharged now with-in no time of charging. The battery status in Setting -> About Phone - > Battery use shown the ...
1
vote
1answer
127 views
Using a fully charged Galaxy Note
Is it safe to use a Galaxy Note that is fully charged and at the same time it is plugged in to the wall socket? I'm worried that the battery might be charging and discharging at the same time and it ...
3
votes
0answers
542 views
MS Exchange with Default Email App is Randomly Draining Battery!
I'm using my Exchange email account for work with the default Email app on my Nexus S running Jellybean... usually everything works just fine, but within a week or so it'll start consuming massive ...
-2
votes
3answers
2k views
Android ROM, RAM, Internal storage, External storage and Battery utilization [closed]
I would like to know how the Android OS manages memory for Applications. When are the various memory hardware components like ROM, RAM, Internal storage and External storage used during an ...
9
votes
2answers
2k views
How frequently is it okay to let the battery discharge fully or as low as possible?
I know that atleast once or twice a month a full battery drain and then a 100% charge helps increase the battery life and also gives more accurate battery readings.
I was wondering, how frequently is ...
1
vote
1answer
498 views
How to properly close running apps while avast! Mobile Security is installed/ running in the background?
I've just installed avast! Mobile Security on my Samsung Galaxy SIII. Runs perfect so far, but I can't close my programs running in the background anymore. I used to do this by pressing the button ...
7
votes
3answers
1k views
Why has my GSIII's battery life dropped from 50-60 hours to 16 hours?
I have a GSIII (Sprint) running Android 4.0.4. In the last three days, I have not made any changes or installed any new software that I know of, but my battery life has dropped such that my phone, ...
1
vote
2answers
275 views
Why android is power hungry? [closed]
When every android phone is released, all the reviews discuss about battery life of the device, since, they say, battery life in android phones is a critical issue.
Question is :
Why battery life ...
1
vote
1answer
2k views
msm_otg kernel wakelock preventing deep sleep
Ever since upgrading my stock Sprint Galaxy S3 to the official Jelly Bean release, my phone won't go in deep sleep at all, it's constantly at 384MHz. It's because of msm_otg kernel wakelock. Anyone ...
0
votes
1answer
1k views
Android battery usage (3G, HSDPA and Edge)
In order to reduce battery usage I checked the Use only 2G networks from Settings > Wireless & networks > Mobile networks on my Android. Then I noticed the E icon appeared instead of H on ...
1
vote
1answer
362 views
Beside shut down the phone, are there ways to prevent battery usage for Call Standby?
Beside shutting down the phone so that the battery will not be used for Call Standby or/and Phone Idle, are there other ways that can prevent the battery from being wasted? (Would the use of ...
8
votes
4answers
2k views
Battery level indicators: Do they consume more battery?
I have a Samsung Galaxy Y phone, the battery level indicator that comes pre-installed in the status bar, shows only a graphical representation of the battery level and does not gives a number ...
0
votes
0answers
722 views
Battery Draining increases on Android 4.1.1 built from AOSP [closed]
I built the AOSP downloaded from google's official site without changing any of the code, Model number is "Full AOSP on Maguro", version is 4.1.1. My device is Galaxy Nexus.
After I flashed the ...
1
vote
1answer
94 views
Power management on Android — is app CPU correlated to power usage?
2 questions:
Is application CPU usage on Android correlated and how highly to battery usage? In other words, are apps that suck a lot of CPU also draining the battery or not necessarily?
Is there a ...
0
votes
1answer
161 views
Prevent runaway threads and ultimately physical overheating and battery drain on Android
I was wondering if there is a system monitor app that will raise (audible) alerts and offer app closure if it detects runaway threads on Android that cause physical overheating and battery drain.
...
0
votes
0answers
78 views
samsung galaxy battery problems
Ever since updating to ICS 4.0.4 my battery life has been awful. I have tried all the suggestions but I do notice when I go into the section showing where the drain on the battery is taking place 64% ...
7
votes
3answers
197 views
How can I tell why my sleeping phone occasionally gets warm (and battery is draining abnormally)?
My two Android phones are doing the same thing, Motorola Milestone and Samsung GS3. From time to time, it is sleeping in my pocket and it will start to get warm and the battery is then draining quite ...
5
votes
2answers
501 views
Why is the com.android.browser process draining my battery?
I have a Samsung Galaxy Note with stock 4.0.4 ROM. The battery drains very fast and the phone is often warm. Reboot doesn't help. Settings says that com.android.browser (Internet) uses most of the ...
4
votes
1answer
60 views
How to see what applications do some actions when I power on my phone?
I believe there's some set of “hooks”, which get executed when I power on the phone. I want to see it to figure out the reason why my phone sometimes doesn't wake up properly (wakes with black ...
1
vote
1answer
289 views
Neo V with 4.0 ICS update — battery problem
My Sony Xperia Neo V battery performance has gone down very badly after upgrading to ICS.
It mainly happens when I have my mobile data/internet turned on. How can I improve the battery performance?
1
vote
0answers
219 views
Handsfree profile sniff mode
I recently connected a bluetooth module (BTM511) to my Android phone (SG2 running android 4.0), using both the handsfree and the headset profiles.
I notice that the Bluetooth device never goes into ...
0
votes
2answers
4k views
The battery of my Galaxy S 2 is draining very quickly…including on plane mode
I just got a Galaxy S II which I upgraded to ICS.
I really struggle with the battery life.
I have been looking around a lot on the forums explaining how to save my precious battery.
I have done ...
2
votes
0answers
132 views
Prevent complete charging?
I'm looking for a way to prevent my phone from completely charging every time it is connected to my computer. I want to reduce the battery's capacity loss, as it is non-replaceable, and it seems to me ...
4
votes
2answers
2k views
How do I recalibrate the battery of my phone?
After a year using my phone, I noticed the battery drains too fast, but after shutting down I manage to make it work again for a couple of minutes before it shuts down automatically.
I read that to ...
5
votes
1answer
770 views
Should I disable mobile data while I'm connected to WiFi?
If WiFi is activated, the phone expends energy trying to find WiFi connections, even if I'm not using the internet. Is the same true for mobile data? Does the phone expend any energy trying to keep a ...
16
votes
1answer
18k views
What is *Cell standby* and how can I keep it from eating my battery?
Looking up my battery statistics, I almost always find Cell standby amongst the top consumers:
I never thought that "idle" would use so much energy. I saw that other people encounter similar ...
15
votes
1answer
2k views
How does Android obtain battery temperature?
I am curious about the way Android phones obtain the battery temperature. Android has an API called BatteryManager which provides the value of instant battery temperature, but is there an actual ...
2
votes
1answer
2k views
Power Saving Option in Samsung Galaxy S3
I see there is a Power Saving switch in the Galaxy S3.
What makes the Galaxy S3 save power when it is turned on?
Is there a difference this and using JuiceDefender?
Can using JuiceDefender and ...
6
votes
1answer
134 views
What happened to my detailed battery stats on my Asus Transformer Pad?
I have an Asus Transformer Pad tablet (TF300T). As with any other Android device I've owned, when I go to the settings menu and tap "battery", it gives me a detailed break down of which apps and ...
6
votes
1answer
348 views
Will charging a smartphone while it is in a case lead to damage? [closed]
Will it harm my Razr to charge it while in an Otterbox case? I heard that would cause excessive heat which would damage the battery or shorten lifespan. True?
3
votes
1answer
132 views
What way of controlling volume is more battery efficient?
I have a headset with it's own volume control, and I can also control the volume of the music through the android's volume control keys.
But which way of controlling is more battery efficient?
...
53
votes
4answers
21k views
Battery Life and First Time Charging on Li-ion Batteries. Myth?
"Ok you bought a brand new mobile phone with brand new battery, after checking its working ok kindly switch it off and charge it fully (100%) then start using it. IT WILL INCREASE YOUR BATTERY LIFE.", ...
15
votes
2answers
772 views
Does 'poor' reception deplete the battery quicker?
In the area where I live I sometimes have trouble with reception. The Internet stops working for me or it takes time to load pages. The phone tries and tries to connect.
It seems to me that when this ...
0
votes
1answer
132 views
Can any Android device be set to not auto power-off?
If I buy any no-name Android tablet from ebay etc, is there a chance it will not allow me to force it to stay on all the time? In other words, is "never auto sleep" a universal feature of any android ...
5
votes
3answers
194 views
Configure power control in notification pane
I just bought an Alcatel One Touch 995 with Gingerbread 2.3, when I display the notification the notification pane I have some icons I can click to activate GPS, wifi, bluetooth, rotation...
I know ...
4
votes
1answer
126 views
How can I monitor the device battery consumption?
I need information about which applications or hardware features discharge the battery. Built-in Android option for this doesn't fit because not all devices have it. Also it would be a great advantage ...
1
vote
0answers
164 views
Poor battery after update to Android 4.0.3
I updated my non-rooted Samsung Galaxy S2 from 2.3.5 to 4.0.3.
Now, I recognize a significant decrease in battery lifetime.
Any idea what may cause it and how to get around it?
6
votes
2answers
530 views
Faster CPU means higher battery consumption?
A friend of mine and I have the Samsung Galaxy Tab 10.1.
His tab is flashed with a custom kernel giving 1.2Ghz instead of the 1Ghz I have by default.
Using antutu benchmark, we saw what we expected, ...
-2
votes
1answer
136 views
How to estimate battery endurance before purchase? [closed]
Let me state obvious thing -- the easiest way to compare two phones would be to buy them and test them. However without such luxury, all I can do is estimating.
I listed such hardware factors -- in ...
