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20

I doubt that there is a direct correlation between battery consumption and RAM usage. The hardware doesn't know which RAM cells contain 'used' data and which not. So there can be no difference in battery consumption on that level. But I think that one could say that unnecessarily killing Apps causes a few extra CPU cycles when those Apps have to be ...


16

You can open a telnet connection to the AVD: telnet localhost 5554 then once connected: power capacity 100 or power status full Source: Android Developers: Using the Emulator


14

Think of RAM like a paper notebook. You can write data into the book (with a pencil), and you can erase those data and replace them with new data, but the book's always the same weight. The book doesn't get any heavier, whatever you write in it. The same way, with current RAM technology, the battery use of the RAM is fixed, regardless of what (if anything) ...


7

Short answer: yes and no. Using three accounts won't run the battery down in itself: by far the bigger factor is how much activity there is. To take an example, Gmail uses push messages (via Google Cloud Messaging, GCM) to notify your phone of new mail, so the phone doesn't have to repeatedly poll the server for new messages for each account. Because of ...


4

MYTHBUSTED I installed this app yesterday with some uncertainty and it detected (and fixed) a number of problems. I then found this thread which made my suspicions even more so. Today I ran the app and it detected zero problems, not surprising since the battery presumably got no new problems overnight. Out of curiosity I set the date to a month in advance ...


4

Battery app re-calculates the remaining battery based on the battery power currently being used (mV) and history. That's why you can do calibration to correctly measure the current battery status and range of it. In most case, battery power (mV), it goes down from the top and it usually up & down within a small range but for overall, it goes down. But ...


4

The two most likely causes: The battery could be dead. Lithium-ion batteries (as well as other types of rechargeable batteries) wear down over time. Even sitting on a shelf they eventually decay, but they decay faster the more you use them, and the more they're exposed to extreme heat, cold, and humidity. The socket on the phone has a loose connection. ...


3

We are using Exchange on serveral devices at the office (for testing) and what i noticed is that sometimes exchange services seem to drain alot of battery even when set to a low interval or push. This typically happens when Exchange is trying to pull some data from the server but an error occurs. The end user (you) does not always see the error. For me ...


3

Most of the battery saving applications are better termed as "settings managers", if you already know how to turn things on & off there isn't much they can do for you. Plus it is another application now running. Newer phones also have employed better hardware , better techniques and more power savings into the whole system, improving that before ...


3

It's fully possible to do that if the charge-from device has USB On-The-Go (OTG) support. You just need a USB OTG host cable (like this one), which you connect to the charge-from device, then plug a normal micro-USB cable into that, then into the device to be charged. The only obstacle you may run into is current limitations. A USB OTG port almost ...


3

I believe it is your battery which is at fault. I've seen this problem as well. How old is your phone? Also, you may try charging the battery separately once from an external charger. If the problem you mentioned persists, then you should get yourself a new battery.


3

This issue gets pretty clear by the second screenshot, which I will repeat here: Battery usage (click image for larger variant) Please pay attention to its lower half, just below the graph, and let me point out some details: Mobile network signal: This bar has no black, which means the radio was on all the time. Further, the colors indicate a relatively ...


3

If you're needing it as always-on wall plugged you will probably need to stick with that. However newer devices stop charge when 100% and then recharge back from ~95%. Answer here: http://stackoverflow.com/a/6654233/3288281 Says that you simply can't use any software to stop the charging.


3

mA is not the same as mAh. The former is a current rating, and the latter is the capacity of the battery. 1000 mAh means the battery can supply a current of 1000 mA (at its rated voltage) for 1 hour, or equivalently, a current of 500 mA for 2 hours, etc. It tells you how much energy the battery can hold. The number in mA printed on the phone tells you how ...


3

This website has a good page on the information: http://nexus7.wonderhowto.com/how-to/unlock-android-ls-hidden-battery-percentage-icon-status-bar-0155876/ But if you want a quick and dirty way to enable this, you can just use: adb shell content insert --uri content://settings/system --bind name:s:status_bar_show_battery_percent --bind value:i:1 followed ...


3

That Nokia code is a myth, it doesn't provide you with any more power, it actually does more harm than good if you are low on battery because it activates the better voice codec (which consumes MORE battery). However, on Android you have this feature called Battery saver. Here's my settings screen for this function on a LG phone (accessed by going to ...


2

You should calibrate your battery: Fully discharge your phone Fully charge it when it is turned off Disconnect charger and wait a minute Connect it again and turn your phone on Delete your data/system/batterystats.bin file (with battery calibration for instance) Reboot your device and disconnect charger Also, it is common problem, so try to google it ...


2

I had similar problems and used Llama, then expanded my use of it to cover other events. It is similar to Tasker, and sufficient to my needs, while still a free app. Most automation can be triggered by entering/leaving cell tower range that is recognized as "Home". It has options to turn on Airplane mode automatically when the phone leaves a cell reception ...


2

yes, it is absolutely safe to charge a device with a charger that has more current capacity than needed. Ohm's law tells us the relation between current, voltage, and resistance: I = V / R (current = voltage / resistance) Since the voltage is held constant (5V), the only factor that determines current draw is the load (another term ...


2

Historically, in order to promote battery life, Apple did not let the apps run in the background (until iOS 4.0 release in June 2010), but did provide this APNS (Apple Push Notification Service), which would let the app developers implement certain client functionality on their own third-party servers, which would then push the notification messages to ...


2

It might be worthwhile to invest in a charge only cable. I use one for my tablet at home and in my car. The quality of the usb cable will also make a difference. Cables do go bad. It sounds like you have ruled out all the other options so this might be worth trying.


2

To be honest, it sounds like a hardware fault in the phone, especially since you say it's been happening since you bought the phone. If the phone were still new, I'd say you should take it back to the shop, but by flashing a new ROM you've voided the warranty. To answer your question: no, it's not normal for that phone. I've known a few Galaxy S2 owners, ...


2

If you are rooted, I would recommend downloading Better Battery Stats (or Wakelock Detector) from the Google Play Store, and finding the name of the 'mad' processes. If you aren't rooted, I recommend you root as other apps can't access battery stats as of Android OS version 4.4.


2

It's understandable that your battery life will decrease when you run 4.4 on an older device like the S2. But that is strange. Try identifying the process like the other users suggested. I would also suggest Greenify, an app that can put processes and apps into automatic hibernation, decreasing their CPU toll.


2

I had to remove the battery from my O4X several times already, as it didn't respond to anything else – so I can see your concern: What to do if the battery cannot be removed then? As to my experiences, devices with a non-removable battery have a reset hole, which serves exactly this purpose: poking it with a needle (or tooth-stick, or something similar) ...


2

To expand on @RossC's comment, doing this yourself is quite easy if you are confident and comfortable with device disassembly, and have the correct tools. There are tutorials on how to safely and correctly replace this: iFixIt: https://www.ifixit.com/Guide/Motorola+Moto+X+Battery+Replacement/16974 ETradeSupply video: ...


2

You can try Greenify it freezes the app when you are not explicitly using it. There is an experimental feature to make it work without root but I didn't try it since my phone is rooted. There is also Disable Service that can disable single services. It requires root access.


2

There are several apps in the Play Store that can list which applications use specific permissions. One that I use is Permission Friendly Apps by androidsoft.org https://play.google.com/store/apps/details?id=org.androidsoft.app.permission It requires no permissions itself so it's safe to use. Once you install it, you can look through the built in views ...


2

The Settings > Battery menu is a cumulative history that gets reset only when you re-charge the battery to 100%. That means all of the usage history is retained through the charge cycle (which includes any partial re-charges). The closed apps' prior battery usage (as a percentage of the total charge used since a full re-charge) should gradually decline as ...


1

Charging is a simple process and can be represented by the below (simplified) equation: Rate of Charge = Rate of Electricity Flow - Rate of Depletion To maximize the rate at which your phone charges at, you want to reduce the rate it's using up your battery as far as possible, and increase the speed at which current is flowing into your phone as much as ...



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