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Marshmallow
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Daveoc64
12-10-2015
Originally Posted by The Sack:
“So you would rather us say a variety of battery optimisations are working very well indeed rather than just saying Doze is great?”

I don't think that people should get their hopes up about what Doze is. It can't be as good as people want it to be or their devices simply won't work.

Doze doesn't optimise power consumption, it stops it. Apps basically can't do *anything* when Doze is active - not a very technically thrilling way to achieve low battery usage.

Originally Posted by The Sack:
“I know how Doze works, i can tell when its been on as my WiFi is off and you can see it flick back on shortly after the screen comes back on.”

You're right that in Doze the Wi-Fi is disabled. It is turned on periodically for a very short amount of time to check for incoming messages from Google Cloud Messaging.

Originally Posted by The Sack:
“I can also see the massive list of optimised apps that it plays with and which i can also alter the permissions within those apps.”

You can see a list of apps, but you can't tell when Doze has been active.

Google's description of Doze and App Standby might be helpful to include here:

Doze: If a user unplugs a device and leaves it stationary, with its screen off, for a period of time, the device goes into Doze mode, where it attempts to keep the system in a sleep state. In this mode, devices periodically resume normal operations for brief periods of time so that app syncing can occur and the system can perform any pending operations.

App Standby: App Standby allows the system to determine that an app is idle when the user is not actively using it. The system makes this determination when the user does not touch the app for a certain period of time. If the device is unplugged, the system disables network access and suspends syncs and jobs for the apps it deems idle.

https://developer.android.com/about/...behavior-power
jonmorris
12-10-2015
I think people know the battery savings come from things being switched off. But it's still an exceptional way of saving battery, on the basis that the tablet left on a coffee table for two days doesn't need to be getting regular updates. But once picked up, it can catch up very quickly.
Daveoc64
12-10-2015
Originally Posted by jonmorris:
“I think people know the battery savings come from things being switched off. But it's still an exceptional way of saving battery, on the basis that the tablet left on a coffee table for two days doesn't need to be getting regular updates. But once picked up, it can catch up very quickly.”

Oh, I'm quite happy that my Nexus 9 is using a lot less power while it's left alone (which, being frank, is most of the time), but I'm not sure that I'd want my phone to become less functional because some people want to squeeze more out of their battery.
jonmorris
12-10-2015
Over the years, I've employed various apps and other battery saving features. Many work on the same principle - of turning off Wi-Fi or mobile data during long periods of non-use (normally determined by the screen, not movement) and with varying degrees of success.

Some manufacturers have their own versions, like Stamina on Sony phones and the multitude of rather confusing options on Huawei phones (and that's just two examples). You also have many apps that will turn things off at night etc.

Of course, once you're using the phone then there's little to can do bar turning down the brightness or throttling the CPU. Things that I'd sooner not do, but when the phone is sat on a desk then it's okay to limit things.

I think having control baked into the OS itself is probably better than a lot of third party options, some of which have issues with wakelocks and memory drain, so it will be interesting to see how it changes things when Android M is on more devices.

I am yet to connect an Android Wear device to the Nexus 5, so I am not sure how it affects notifications when the phone is 'doze'ing? If it is still waking up periodically then I assume it works pretty well still?
Stuart_h
12-10-2015
I'm running wear alongside my nexus 6. I can genuinely say that battery usage has never been so low - don't know if its doze or some other features but I know it seems to be working well
jonmorris
12-10-2015
Doze is going to be stunning for tablets if my Nexus 5 is anything to go by.

Saturday night it was on 55%. Now (Monday night) it's 40%. That's 15% off in 48 hours! Now that's with me never picking it up once, but that should give a good idea for tablet users where it's set down on a table for most of the time.
corf
13-10-2015
Anyone else getting crackle via the headphone jack following the update. (Nexus 5 OTA, no factory reset). Very noticeable in audiobooks
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