How to see Battery usages in Samsung Galaxy A7-2016(SM-A710FD)?
Battery Usage allows you to see which processes were running since your device was last fully charged.
Navigate to Apps → Smart Manager → Battery → BATTERY USAGE
a). Tap on Apps icon from the Home screen.
b). Tap on Smart manager icon.
c). Select and tap on Battery option.
d). Tap on Battery usage.
e). You can check the Battery usage of each app.
CLICK HERE to know how to enable Power saving mode in Samsung Galaxy A7-2016 ( SM-A710FD ).