[obidos]

Anyone know how to keep it on and what exactly does it do?

I can turn it on but it will not stay on. Any ideas?

[kjohnson28]

Mine does the same thing. Will not stay on and not sure why.
Sent from my ADR6400L using Android Central Forums

[eherberg]

Came here to ask the same question. Pre-update it was available under "power" in settings. Turned off Wifi - sync - etc when battery level got down to whatever level you set it as (I think the default was 20%). Now it is not in the settings menu at all -- but still shows under quick settings.

I also noticed that the "voice search" icon is nowhere to be found under apps anymore either -- although I can still see it's icon (and is callable) from recent apps list. Functionality is of course still available from the google search app or bar .

[fritzholz]

I'm having the exact opposite problem: I want to turn power efficiency off, but it won't do it. The toggle works, but when I leave the settings and then return, power efficiency is back on again.

This is keeping me from using 4G -- *very* frustrating. What's going on?

[Jersey Steve]

Just got the update to finally complete today as well. My power efficiency won't stay on either. Let's hope someone is monitoring this forum and realizes there's a bug (hopefully).

[jdd77]

As far as I can tell, you can only turn power efficiency on or off. There's no way to set the parameters and I don't know what the default is. There's an app called "Power Saver Settings" which gives the power efficiency menu that was in the previous version of Android. Hope this helps.