I've been able to safely disable/uninstall GMS core / Google play services apk on 101 firmware (JB 4.3). I've noticed that the app becomes essential for logging into Google play store on KitKat 4.2+. This app is the primary reason for wake locks, battery drain and general poor performance in all KitKat versions. Can anyone suggest a method in KitKat wherein Google play store can be made too work without this app? My Google account login is only for accessing play store & downloading free apps, no gmail, music, talk, hangouts, G+, games, magazines, movies, contacts sync, calendar sync, settings & app sync newsstand, nothing else other than a login for using the play store.
Dead Cookies leave no trails...
If you uninstall all those apps that you don't need (especially g+) you will have no battery drain.
Oh, and I also greenify google play services and Google play store and I have a battery life as I never had before 4.4
I'm using Uninstall App Master from the play store to uninstall unnecessary apps
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