Questions about Battery life (how long each charge last) or/and Battery Durability (how long until it needs to be replaced) should use this tag.

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4
votes
2answers
2k views

Google Search App Draining Battery on KitKat

I am talking about the app that shows up as "Google Search" in the Battery statistics. My Phone is a Nexus 4 on KitKat. This app draws a lot of battery, up to 50% in idle standby. It also has a ...
0
votes
0answers
70 views

Android battery life

I updated my note 2 to 4.3 version 2 days ago and since then my battery life has reduced to half what it was before updating my phone. Can anyone help me find out why my battery life has got so bad?
0
votes
1answer
78 views

Battery Boost?Drain?

I recently updated my Note 2 to 4.3 and it has been working quite well. But today in the train I was using it and the battery level drained to 20%, Since the battery was low, I switched it off and ...
1
vote
1answer
466 views

Is it possible to turn off radio without turning of wifi on Lenovo k900?

I am currently having a look at the power consumption of a lenovo k900 phone and on the hardware side it seems Radio and Screen is using most of the power. I am planning to use wifi but not the ...
0
votes
2answers
73 views

When selecting an USB extension cable to extend power cord, what are the relevant considerations?

I want to use USB extension cords to extend the USB power cords for my Android device. What are the factors that could affect normal charging behavior? (Consider "normal charging behavior" to be ...
0
votes
0answers
100 views

How to disable/remove ALL cell functionality

I have a Kyocera Event (Virgin Mobile) running stock Android 4.0.4. This is only used as a media player for about 90 minutes ONE DAY per week. I am looking for a good way to extend battery life as ...
0
votes
0answers
142 views

Are all the cores online at a time when In-kernel Cluster switching CPUFReq driver is in use in SAMSUNG S4 GT-I9500?

I checked the file /dev/bL_status in Samsung S4-GT-I9500 (exynos 5410 Octa version) root@android:/dev # cat bL_status 0 1 2 3 L2 CCI [A15] 0 0 0 0 0 [A7] 1 0 0 0 1 and it says that ...
0
votes
1answer
3k views

Sudden battery drain on Samsung Galaxy Ace 2x

I have a Samsung Galaxy Ace 2x that is not yet a year old. For the last 6 weeks, the battery has been draining very quickly, even though I have turned off everything that would cause this (GPS, WiFi, ...
1
vote
1answer
3k views

Google Maps runs GPS in background even if the GPS radio is off - how do I fix?

I have the T-Mobile version of the LG G2, running Android 4.2.2, everything stock except the keyboard. I'm not sure what version of Google Maps, but the Play Store says it's up to date. Yesterday I ...
0
votes
0answers
757 views

How to debug “wlan_wake kernel wakelock” on an unrooted device?

The question is as short as the title. I've a Samsung Galaxy Note 3 & it has started showing issues where the CPU remains in lowest possible frequency (250Mhz) and it doesn't go to deep sleep. I ...
1
vote
0answers
152 views

How can I recover lost Contacts on Galaxy GT-NT7000. Contacts and Dialer App became very slow and battery runs down fast,

This is a RAM issue and lost contacts issue (contacts not saved under Google). The log of text messages with all contacts, since start, is all, still there. My Android version is 4.2.1. I have had 3.5 ...
1
vote
0answers
261 views

Samsung S3 Mini power save mode activity

I'd like to use power saving feature available in Samsung's TouchWiz in Llama but the only way to do this is to tell Llama particular activity/intent to run I guess. As in this thread on XDA. I'm ...
1
vote
1answer
297 views

Is there any battery-less Android-based device

I'be been working on some Chinese (bit crappy) device, with own system, that had one wonderful (at least for me) feature. When constantly powered-up (plugged to power adapter) it could work without ...
-1
votes
2answers
772 views

How to find android apps occupies RAM memory space?

I wish to know about which app is occupies more memory space in RAM when i use multiple apps Note: i just have RAM capacity of 256MB so that my battery downs soon.
0
votes
0answers
41 views

Why does the Android OS use so much battery power? [duplicate]

Most of the time, I have enough power for my Samsung Galaxy SIII to operate for the whole day; at the end of the day my battery charge is about 35%. However, today, the battery died prematurely. I ...
1
vote
1answer
337 views

What kind of hardware problems is a cheap Android phone likely to have?

For development and application purposes an organisation I am with is considering buying a cheap Android handset here in India (this is the handset). But what kind of problems can one anticipate in ...
1
vote
1answer
3k views

Battery performance of Dual SIM phone running only one SIM

Does a dual-SIM Android phone running only one SIM yield almost the same battery life as a single-SIM phone? Will both the radios be running all the time regardless of whether both the SIMs are ...
0
votes
1answer
94 views

short battery life

I have a gs3 running slim bean, and the battery life seems horrible to me. I woke up this morning at 8:00am with 100% battery life and by 1:30pm it has gone down to 23% I have been I barely use the ...
2
votes
1answer
455 views

Does using an unofficial charger negatively affect overall battery lifetime of a GS4?

According to two employees at the Sprint store, using an unofficial charger for the Galaxy S4 will negatively impact the overall life of the phone's battery (edit: in other words, the battery will ...
0
votes
1answer
82 views

About WI-FI battery usage

I keep reading about how much battery does WI-FI use, but when I look in settings > battery, WI-FI shows with < 5% usage when I barely use the phone. And when I use it, the screen takes most of the ...
0
votes
1answer
450 views

Battery Status Indicator Error?

Okay so I have a very interesting story to tell.... Here is what happens... I charge my phone at night, wake up in the morning, pull it off the charger, about 9-10pm it drops to about 15%, which ...
0
votes
1answer
280 views

Samsung Galaxy s3 Battery life

How long should a Galaxy S3 battery last? My phone is brand new and today it was on standby for most of the day (it dropped 10% while being on standby for 3hrs), I only used the internet for about an ...
4
votes
2answers
12k views

nlpwakelock and “Use wireless networks” option

Under "Location services" there is a "Use wireless networks" setting - whenever the setting is on, I get constant "nlpwakelocks" and the battery drains a lot faster. However, I see that this was ...
2
votes
2answers
236 views

What are some reasons for big difference in time usage and small difference in mAh?

I have found an android phone with really good specs like 1.5GHz Quad Core, 1GB RAM, 5", HD screen. My question though is on the battery Battery Size: 2000mAh Usage Time: 6 Hours Battery Standby: 72 ...
0
votes
1answer
126 views

Do running applications and background processes have any effects on Power Consumption?

I need some help with android applications: Do running applications and background processes have any effects on Power Consumption of the Battery (running down so fast)?
9
votes
4answers
346 views

Does GPS signal quality influence battery life?

Does bad/weak GPS signal affect battery life? For instance, when in the city downtown with lots of tall buildings or in the woods or mountains, will running GPS drain the battery faster?
1
vote
1answer
4k views

Is it better to detach a charger when my Android device gets fully charged? [duplicate]

When using my Android device at my desk, is it better to (from a battery health point of view) detach a charger as soon as the device gets fully charged, or is it ok to keep it on the charger? I like ...
0
votes
1answer
341 views

What do the different coloured bars on the 1x1 widget in Better Battery Stats app mean?

I understand these are supposed to signify ratios of different phone states but I cannot get my head around which is supposed to be which.
1
vote
1answer
648 views

How can one know if one's battery is damaged

What are the signs of a damaged or completely drained battery for Samsung Galaxy Note II? The battery displays it is empty and yet does not charge. It does not power the phone either. Am confused
3
votes
1answer
4k views

Looking for a consistent answer about battery calibration

This forum is full of questions about battery calibration. The thing is, that either I'm blind or one answers contradicts others. In particular: For example forums says, that battery should be ...
5
votes
2answers
5k views

What do CPU Total, CPU Foreground, and Keep awake mean?

I've been keeping an eye on my battery usage on my Android device (HTC One), mostly to see if I can drain it during a full work-day, and I came across the app usage details under the Power settings. ...
1
vote
2answers
72 views

Are there any issues in storing an Android battery?

I want to buy a 2nd battery for my i9100 because the phone is getting old and I don't know if parts will be easily available a couple of years on (don't want to upgrade, I like it too much), but I've ...
1
vote
1answer
2k views

Why does Better Battery Stats say my Galaxy S4 is awake 100% of the time?

I think the screenshots speak for themselves. Can't pinpoint a reason from what I see. Anyone can help please? Thanks Screenshots (click images for larger variants)
1
vote
2answers
127 views

Full battery completely depleted within a few hours without any user activity — what to do?

I left my phone on the table with full battery without doing anything with it. After a few hours the battery was completely depleted, and the phone automatically shut down. What could cause such a ...
2
votes
0answers
20 views

Is it safe to keep Android charging through USB all day? [duplicate]

When I'm in front of the computer, I always keep my Android phone plugged into a USB cable so it's always at a 100% charge and I can type text messages from the convenience of my PC keyboard. Still, ...
0
votes
3answers
1k views

Sony Ericsson DISCHARGES when plugged in

I have a Sony Ericsson Live With Walkman (WT19i). About a week ago my phone started discharging when plugged in for charging using either a Samsung wall charger or the USB port on my PC. It charged ...
6
votes
1answer
986 views

What can cause sudden drop of my battery in Nexus 4?

I have new Nexus 4 phone and I found it dead several times after the night. Obviously it wasn't used during night, screen was turned off. After I plugged it to the charger I had to wait a few minutes ...
0
votes
1answer
65 views

How to stop all but 1 one app including their services?

My HTC Sensation's battery does not last long. I'm going for a Marathon race which should last at least 5 hours and I'm going to use 1 app (RunKeeper) for that period. I would like to preserve as ...
1
vote
0answers
769 views

Galaxy S3 Mini drains excessive battery when Wifi is ON

This question is linked to this one: Wifi battery saving tips or automation This time, the question is different. I have here a Galaxy S3 Mini phone that behaves strange. When Wifi is OFF, battery ...
4
votes
1answer
2k views

How does the Android OS estimate remaining battery time?

Is it known how the Android OS estimates time to failure / remaining battery charge? I am doing a school project about battery estimation on mobile devices but have not been able to find any ...
0
votes
3answers
203 views

Wifi battery saving tips or automation

A person that is not expert in computers & technology (including smartphones) bought a Galaxy Mini S3 and asked me some help. He is very old of age. The problem with this phone is that Wifi ...
1
vote
1answer
453 views

What does power saving do exactly?

What changes happen in functioning of the phone after you turn it on? My device: Samsung S3 Mini
3
votes
4answers
21k views

Does Cyanogenmod reduce battery life?

My galaxy mini was running GB 2.3.6. I recently rooted my phone and installed CM 7.2. Now it looks like my battery is getting drained a little quicker than before. From what I have heard CM increases ...
4
votes
1answer
14k views

Display screen keeps waking up when locked

When I lock my Samsung Galaxy Nexus by pushing the power button, my phone's screen darkens for a few seconds, then keeps staying awake with the lock screen displayed. This keeps eating away at my ...
10
votes
3answers
20k views

2G versus 3G: Does it really save battery?

I often hear the recommendation that fixing your device to 2G saves a lot of juice compared to using 3G. Is that true? Or is it really a myth?
-2
votes
1answer
24k views

Unusual battery drain on note II [closed]

My Note 2 battery is driving me insane. I have been using my Note 2 for like 2 months. And I had been following the recharging cycle where you only charge the battery when it reaches 5% or less and ...
3
votes
1answer
6k views

Should I keep my Android tablets' power off or leave them on standby mode?

Should I keep my Android tablets power off or leave them on standby mode? Which option is better? I have two tablets: Allwinner A10 single core 10 inch (old one) and Allwinner A31 quad core 9.7 inch ...
7
votes
2answers
3k views

What uses most power: GPS or WiFi?

When playing Ingress I find that both GPS and WiFi (each by themselves) provide an acceptable location accuracy. My question is what draws the most power? I'm interested in technical information ...
2
votes
1answer
1k views

Why is my battery low only a few hours after charging?

Twice recently I have charged my Samsung Galaxy Ace at night and when the phone indicates it's fully charged I unplug the charger only to be woken a couple of hours later thinking I have a text come ...
6
votes
3answers
7k views

Nexus 7 charges very slowly, even with 2 amp chargers

I'm facing a rather painful issue with the battery life/charging issue with my Nexus 7 (4.2.2) When idle and plugged into my 2A charger with the stock USB cable, it charges VERY slowly. I'd say ...