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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5
votes
1answer
913 views

Does a battery with more capacity last proportionally longer?

I recently bought a Galaxy S2 which came with a 1650mAh battery and in a near future the manufacturer will be offering another one with a 2000mAh. My question is: will it last 21% more than the ...
4
votes
3answers
3k views

How can I prevent my Desire HDs battery from draining overnight?

I've recently got the new HTC Desire HD, which has a poor battery to start with (1230 mAh), but in the last two weeks I've had several nights waking up with a dead battery. The first few nights, I ...
7
votes
2answers
2k views

Am I overcharging my phone? [duplicate]

Possible Duplicate: Does constant charging harm my Android cellphone? I am using my Xperia Active for application development. Given that scenario, I obviously have the phone connected to ...
6
votes
1answer
810 views

How much does Android use Wi-Fi for network discovery when not connected?

When I have Wi-Fi turned on, but not connected to any network, how much does Android use the Wi-Fi function? I'm asking this because apparently Wi-Fi activity uses considerable* amounts of battery. ...
5
votes
3answers
11k views

Will rooting my phone improve its battery life?

I've had an HTC Desire HD with HTC Sense for about a year and I'm quite happy, except for the battery life. After upgrading to the latest version, it lasts about 24 hours with moderate/low usage. I ...
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 ...
4
votes
1answer
2k 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. ...
4
votes
1answer
163 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 ...
4
votes
1answer
1k views

Can anyone reccomend a 2g / 3g switching widget?

I've just got my new HTC Desire HD and I want to switch 3G on and off as required. I used to do this on my old HTC magic and got quite good battery life compared to some friends with the same phone. ...
3
votes
2answers
7k views

Google Services battery drain on Galaxy devices

Here are screenshots from my three Samsung Galaxy devices: Samsung Galaxy S3 (left) and Samsung Galaxy S4 (right; click images for larger variants) Samsung Galaxy Note 10.1 2014 (click image to ...
2
votes
2answers
300 views

What is trying to connect to the network?

When I'm not actively using the network, I usually turn off Wifi, Bluetooth, and Data. Since upgrading from Android 4.3 (stock) to 4.4 (OTA update from my carrier) I notice two things: Battery life ...
2
votes
2answers
9k views

My phone keeps slowing down and burning battery. How can I debug performance and cpu consumption? (DHD 2.2)

I know there are already a lot of threads about suggestions on how to improve performance and, strongly related, save battery life on your android. I also have tried most of the tools to diagnose ...
8
votes
2answers
2k views

Turn off cellphone (SIM) radio

How do I turn the cellphone (SIM) radio on an Android phone? The radio consumes a lot of power (30-70%), especially when the phone is idle. Sometimes I only need to use other functions (e.g., clock, ...
5
votes
1answer
2k 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 ...
5
votes
1answer
714 views

How much battery does using live wallpapers drain?

I know they are unnecessary, but they look so cool!
4
votes
1answer
5k views

Battery life cut in half recently - DrReadUsbStatus issue?

My regular uptime on Samsung Galaxy S2 was around 6 days. For the last couple of weeks it is down to less than 3 days. The change was instant, but I was hoping it would come back - it did not. Running ...
3
votes
2answers
448 views

Is there a way to see which apps are using GCM?

I'm interested to know how many of the apps I have installed are using GCM. Is there a way to find out?
3
votes
2answers
6k views

Galaxy S3 cell standby is eating my battery

My battery on my new S3 seems to be being eaten up by the cell standby using more than 50%. I appear to get a decent signal on the phone. Does anyone have any idea why this figure would be so high?
3
votes
3answers
424 views

How can I prevent the battery in my Nexus S from draining overnight?

I have a Google Nexus S and for the past 2-3 days whenever I go to sleep the battery drains completely overnight. I mean when I go to bed the charge on my phone is plus 90% but for the past 2 days ...
3
votes
1answer
621 views

Is there any known memory leak in Gingerbread 2.3.3 fixed by occasional reboot? Related to battery usage?

I notice that when I reboot my Samsung Captivate, it runs smoothly for about 2 or 3 days. After that, I notice that there is a lot more lag with various apps, and the launcher screen is more likely ...
2
votes
2answers
438 views

Brightness and battery use

When I turn down the brightness of the screen on a Samsung Galaxy Mega am I lowering power consumption or increasing the opacity of the screen?
2
votes
2answers
434 views

Can I restrict Nexus 7 2013 LTE to 2G/3G, instead of just 2G?

In the settings on Google Nexus 7 2013 LTE, there is an option to restrict the device to 2G networks for better battery life, which makes it use 2.75G GSM EDGE. Why is there no option to do the same ...
2
votes
2answers
158 views

Getting a list of applications with SMS permission

I installed many applications, and some of them have specific permissions. How do I get a list of all applications with a specific permission? I'm interested in SMS permissions. I do not want to write ...
2
votes
1answer
3k 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 ...
2
votes
1answer
1k views

Battery Sony Ericsson XPeria Mini Pro

I've a Sony Ericsson XPeria Mini Pro with Android 2.3.3. I noted that the battery ends really fast. I don't have enable GPS service, Mobile data, Bluetooth. Only phone and wifi. In less than two days ...
1
vote
1answer
41 views

IM-A870L Radio Interface Layer broke down

I am having this weird problem with my Vega Iron since a couple of days. Past 2 days the battery was down and phone shut off. I put it to charging and when I came back after couple of hours, the led ...
1
vote
1answer
82 views

Even with WiFi turned off it is still the biggest battery drainer (S5 Mini)

I have a Samsung S5 Mini and today I noticed that even when WiFi is off, it is still the biggest battery drainer (oscillates between 20-23%). I also noticed that yesterday the battery drain was much ...
1
vote
3answers
2k views

Battery Issues-Moto E

I am facing battery issues from days,the battery does not survive even a day even without using the internet. Tried uninstalling some apps but to no effect.It is happening 10 days after 4.4.4 kitkat ...
-1
votes
1answer
124 views

Is there any equivalent of Tegra 3's “-1” low-power core in Qualicomm's S4? [closed]

One of the reasons I greatly desired my next phone to be a Tegra 3 "4+1 cores" device was the (somewhat less advertized) 5th low-power core designed to prolong battery life by running low-power ...
-1
votes
1answer
2k views

How is Anker battery for Android phones?

I've heard people talking about Anker on big forums about Anker battery, basically cell phone batteries and external batteries, and it seems people speak highly about it. So have you have any idea ...