I'm not sure if I've written about this before, but it's significantly a underrated feature that Google ripped out of Android 4.4 after introducing it in 4.3. You can prevent apps from holding wake locks, using your location, sending SMS messages, etc. Whatever permissions the app has declared, you can easily revoke them. The single thing that bugs me is some permissions seem to default to allow, like sending SMS messages. I have no issue going through the initial million popups that appear asking for permissions. For instance, if it's the cLock widget, great; take the location, thanks for asking! If the Calender App wants to read my Calender: excellent! If it's Dell Voice, no, I don't want you using my location, taking my physical phone number, or anything else about me that isn't an IP address.
Anyways, blocking Google Play services from taking a Wake lock seems to have increased my battery life 10 fold (ART on KitKat helps as well ). I think the feature is partially in Paranoid Android. With that being said, the single time I used Paranoid Android they were in some dumb broken state where they were redoing the UI and had no features. I'm still using CyanogenMod on my Galaxy Nexus, grab a build from before the License changed (or accept it; I don't know) and away you go.
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Blog entry posted by Kyle, Oct 9, 2014.
Tony the Tiger!! :D likes this.