I decided to migrate my Nexus 9 to the latest pre-release version of Android M.
Didn't really have a specific need beyond trying to see what the updated permission management looks like.
Happy so far.
I just had the biggest surprise.
Having kinda moved to my iPad 3 mini for day to day stuff I simply left my Nexus on the bed-side table.
It has been there for a while but today I decided to pick it up (slightly larger and actually brighter screen than iPad mini) and have a read of my usual stuff.
I thought that it will be all flat and in need of couple hours on the charger.
And then it still lit up and said battery had over 30% left.
Not that is since the last charge on the 14th of June!!!
So given it's still a pre-release I am giving it bit thumbs up.
Granted it was completely not used, but still.
Simple standby over such a period of time is excellent.
It still was up to date with emails, fb messages and play updates, so it's obviously doing some stuff in the background.
Very much looking forward to the final release version.
Good job Google I say.