3.5 battery life? Android 6.0 fix battery?

[darklide]

My phone is only 6 days old and I am getting 3.5 hours battery life. Very very sad especially coming from a Nexus 5.

Why is Android system using so much resources! My Nexus 5 would be around 1-2%. . Restricting background data seems to help. As well as installing greenify.
Has Marshmallow 6.0 fixed the battery issues on the G4?

Update the app Greenify seems to have fixed the battery drain.

Thanks

 

[LG1337]

Is this a new phone? If its used it might be time to change the battery.