Android M, now revealed as 6.0 Marshmallow, could lead to much healthier standby battery life on your favorite smartphone according to some testing done by German blog Computerbase. Taking two Nexus 5 smartphones (one running Lollipop, the other Android M), the site ran side-by-side standby time tests and discovered that the Marshmallow-flavored Nexus achieved standby time nearly three times as long as its Lollipop-powered counterpart.
It's a case of Android 5.1.1 versus the very first Dev Preview of Android M, and the latter's standby time is significantly improved over the former. After 24 hours of leaving both devices on standby, the Nexus running Lollipop was down 12% while the M-powered Nexus was down just 4.5%. It was similar after 48 hours with the phone running 5.1.1 down by 24% and the Android M device down by only 9%. Using some basic arithmetic the site calculated that the Nexus 5 running Android Lollipop could last a maximum of 200 hours on standby while the Nexus running Android M could go a total of 533 hours. Rounding up, that's 2.7 times longer. Read more of this post
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