February 29, 2012 By: Joseph Hindy
Battery life can be a tricky thing with Android phones, as the list of things that can ravage your battery is huge. Anything from wake locks to apps that use constant data, to more fundamental settings such as screen brightness and CPU clock speed can tank your battery life. For many Android devices, there’s no definitive reason why it happens, either.
Well, for those carrying the AT&T Samsung Galaxy S II, you have a much better idea than most on why your battery life may be going down. XDA Recognized Developer Entropy512 has conducted a study that has isolated several apps and processes that eat a larger than average amount of battery. The study has identified several things from bad configurations to rogue applications that use up way more battery than they rightfully should. A couple of examples:
BLN – On Galaxy S II devices, there is no stable BLN implementation that does not hold a wakelock when a notification is active. This means that an active BLN notification will drain about 4-5%/hour. I say this in bold letters in my kernel thread, but somehow people still don’t realize it…
Skype (October 2011) – Particularly insidious, as it does not directly hold a wakelock. However, it causes lots of background network activity, and this activity keeps your phone awake. Since most of the time is spent wakelocked in the network stack, Skype drain shows as Android OS.
Entropy512 says that the study is still being conducted and any rogue applications or processes will be added as they are found. To help the process, Entropy512 has also posted a way for the average user to grab their wakelock logs so they can be checked out. Expect many more apps and configurations before the study is over.
For those who want to contribute, check out what is really eating their battery, or simply want to join the discussion, you can find the complete list in the original thread.
A tad late but always worth pointing out if you are not the kind of people who scroll all the way to the end of the forum’s list. Late last week, we decided that the AT&T SGS 2 variant known as the Skyrocket was different enough from the original AT&T SGS2 that rather than having it as a separate sub-section, it would have its own forum. The differences go all the way down to the core of the device as the original SGS2 sports an Exynos 1.2 GHz dual core processor, whereas the Skyrocket is loaded with a 1.5 GHz dual score Snapdragon. On top of that, it boasts a larger screen at 4.5 inches, which makes it match its T-Mobile brother, the Hercules and it comes loaded with Android 2.3.5, which is still not the latest but it is closer than 2.3.4 is. Last but not least, the device is loaded with 4G capabilities, so now you can take advantage of AT&T’s high speed LTE data. The device keeps the beauty of the original SGS2 and basically adds more power to it.
If you already have one or are thinking about getting one, check out some of the most recent developments, which we will talk about shortly.
You can find the Skyrocket’s home on xda right here.
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