It can be tough to know when a phone is on its deathbed or when an app is just being an overt battery hog. Google is going to help users get to the bottom of things, according to a recent Android Developers Blog.
The company just announced the launch of a new metric for app developers that keeps an eye on battery usage. If a developer consistently runs afoul of Google's battery usage guidelines, a warning will pop up in the Play Store to alert end users.
This metric will keep a particular eye on so-called wake locks, which is when smartphones are prevented from entering sleep mode by battery-hungry apps that want to run background processes when the screen is off. Google says wake locks are a "heavy contributor to battery drain" and has developed a threshold for what is deemed acceptable for apps running in the background.
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This threshold "considers a user session excessive if it holds more than two cumulative hours of non-exempt wake locks in a 24 hour period." There are exemptions if the background process offers "clear user benefits" with examples given of audio playback and user-initiated data transfers.
If a developer doesn't fix the underlying wake lock issue, they get slapped with a visible warning. The Play Store label says that "this app may use more battery than expected due to high background activity." That will likely turn off potential downloaders. I certainly wouldn't pop one of those apps on my phone.
Google will go a step further in some cases, making the offending apps ineligible for certain discovery sections within the Play Store. These rules go into effect on March 1, so we only have a few more months to experience just how quickly an Android phone can go from a full battery to completely dead.