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
258 views

Does Gingerbread use extra battery power to make calls when the phone has poor signal?

Since I got this phone (Galaxy S, originally on Eclair, then Froyo) and switched network provider, I've had major problems with the signal at home, and call quality as a result. Following the upgrade ...
2
votes
2answers
392 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
21k views

Does charging a phone with another phone's charger affect it in any way? [duplicate]

I have a Samsung S4 and because its charger is short I charge it with a Samsung Wonder charger. I am afraid that it can damage the battery or something. Will it?
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, ...
10
votes
3answers
25k 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
312 views

How to disable Google Search?

Recently my phone started to lose charge faster. It just occurred to me to check Battery in Settings, and I saw that Google Search is responsible for 29%, Screen coming in second with 23%. I set up ...
4
votes
1answer
336 views

Don't charge to 100% when always-on wall-plugged-in

I want to use a Google Nexus phone for an always-on wall-plugged-in WiFi tethering access station. It occurred to me that if I just do it like this, then I'm risking ruining the battery within a ...
0
votes
1answer
154 views

Nexus 7 rooting and battery life

I rooted my new nexus 7 the other day using the Nexus Root Toolkit. Before rooting I was able to get about a full day out of a charge and still be at about 20-30% but now my battery seems to drain ...
2
votes
0answers
504 views

2G vs 3G Talktime

When I was going through specs for my Xperia SP, I found the 3G talk time to be more than the 2G talk time. Talk time: Up to 10 h 25 min (2G) / Up to 19 h (3G) More over I went through the specs ...
2
votes
2answers
243 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?
1
vote
0answers
440 views

Stay awake while charging, bad for battery?

Is it bad for battery to use the option to stay awake while charging? Will it make my battery drain faster in the future? PD: I use my phone for app development. I have activated the stay awake ...
1
vote
0answers
414 views

Does GCM always work over cellular data, as APNS?

APNS always works over cellular data, even if you are connected to WiFi (because WiFi uses extra power, and thus iOS devices turn it off during sleep, without affecting APNS). Is GCM (Google Cloud ...
0
votes
1answer
375 views

Is there anything similar to APNS on Android?

Is there anything similar to APNS (Apple Push Notification Service) on Android? (APNS uses a single TCP connection between an iOS device and an Apple-controlled server, which issues push ...
1
vote
1answer
52 views

Is there a way to find out if a given app supports GCM (like APNS)?

Is there a way to find out if a given app supports GCM (Google Cloud Messaging)? (GCM is Google's version of APNS.)
-1
votes
1answer
563 views

Do any Android VoIP SIP clients support GCM (like APNS)?

It would appear that Android has a technology similar to APNS, called GCM (Google Cloud Messaging). Historically, in order to promote battery life, Apple did not let the apps run in the background ...
0
votes
0answers
2k views

Phone Radio uses 80% of my battery

I have GSam Battery Monitor, and it says that my Phone Radio is using about 80% of my battery. Why is this so high? I usually unplug my phone in the morning at 8AM, and I usually need to plug it back ...
1
vote
2answers
2k views

“Restrict Background data” with Jelly Bean on tf300t ASUS tablet

On my tf300t ASUS tablet (with wifi only) I tried to set "Restrict Background Data" following Settings->Data Usage->three boxes in the upper right corner, but there is no such option. I read on ...
39
votes
1answer
110k 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 ...
0
votes
1answer
310 views

How can I increase my samsung galaxy fit's battery life?

I'm using Samsung Galaxy Fit(S5670) and running official 2.3.6 version. My battery's capacity is 1350mAh. Can I increase this capacity to 1500mAh or 2000mAh?
1
vote
1answer
6k views

How do I automatically turn off my android tablet when battery is low

I'm having problems with a android tablet that freezes when the battery runs low. Is there an option in android or an app that could turn off the tablet when the battery is below a certain % of power ...
15
votes
3answers
52k views

How can I find out what causes “Android OS” to consume battery?

The issue is that I see a high percentage on the "Android OS" item in the Battery Usage, and I want to find out what is causing it. But let me say that I'm interested in diagnostics techniques and ...
1
vote
1answer
387 views

How to solve the short battery life with galaxy s4?

I bought Galaxy S4 in just half year. However I found some wrong with the bettery, my phone shutdown automatically recently with over 20% battery. I can only use the phone for two hours after my phone ...
1
vote
1answer
128 views

How to drop out of airplane/flight mode periodically to check messages

I normally keep my phone in Flight Mode (called "Airplane Mode" under 2.2) in order to save battery power. When I have some time to check messages, I turn off Flight Mode, re-enabling the cellular ...
0
votes
0answers
77 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
87 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
644 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
80 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
127 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 ...
1
vote
1answer
4k 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 ...
7
votes
5answers
14k views

Is there an app that will drain my battery?

Are there any apps that will specifically help to drain a battery down quickly? The scenario I would want to have this is if I want to quickly drain the battery so I can charge it fully again. Some ...
16
votes
1answer
6k 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
359 views

What factors does PowerTutor measure to show energy consumption?

I am trying to find the impact of the signal strength on the energy consumption of WIFI in Android using an HTC NEXUS ONE. I am sending several files starting from 1 kb to 600 kb. I use PowerTutor as ...
13
votes
4answers
9k views

What's causing battery drainage by “Google Services” while packet data is switched on in a 3G dead zone?

Here's a picture of my Samsung Galaxy S2 battery usage page. Around the point where the battery usage started diving, I had added a calendar remainder, sent an email (to a new contact) and browsed ...
6
votes
1answer
1k 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 ...
1
vote
0answers
291 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
465 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
1k 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
44 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 ...
0
votes
3answers
214 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 ...
27
votes
3answers
31k views

Do I have to charge my phone before I use it the first time?

When I got my last phone, a SE k850i, I was recommended to charge it fully once before I even turned it on. Does this apply today as well, for my coming HTC Desire HD? Why was I recommended to do so ...
4
votes
1answer
146 views

“Phone” item using 10-15% of Battery Life

I've attempted to search for other questions answering this, but keyword ambiguity is working against me. On my Galaxy Nexus, my battery drains rather quickly. Very frequently, when viewing the ...
10
votes
4answers
702 views

Gingerbread has drastically reduced my battery life

I have a Nexus One, and since upgrading to 2.3.3, my phone lasts several hours less compared to 2.2.x. I've swapped out to a new battery, which didn't make a difference. In about 14 hours (of nothing ...
21
votes
4answers
16k views

How can I avoid the battery charging when connected via USB?

I'm using my Samsung Galaxy S2 for development so I regularly plug it while it's not fully charged, and my phone starts charging over USB. I think this (charging while in use) can affect battery life ...
1
vote
1answer
392 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 ...
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 ...
1
vote
1answer
4k 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
98 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 ...
8
votes
2answers
228 views

Avoiding power drain

I just got a samsung Indulge this weekend and I’ve noticed that the biggest power drain on the battery is from the display. I’m blind, so I really don’t need to be able to see it at all. Is there a ...
2
votes
1answer
544 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 ...
2
votes
1answer
557 views

How to train the battery

I am trying to find the way to use my battery in the most efficient manner. I found several suggestions how to achieve the longest life of the battery, and one of these suggestions is quite strange ...