What does the setting "Standby intelligent power saving" do? I have purchased a new phone, Alcatel Pixi 4 (5") running on Marshmallow. It has enabled by default a setting called "Standby intelligent power saving" in the Battery settings, but I can't find (Google) an explanation of what this setting does.

What does the setting "Standby intelligent power saving" do?
All this does is turning off unnecessary stuff that runs in your background when your phone is locked. 

This includes:


Less notifications
Restrict mobile data (not WiFi) 
Less waves transmitted by the device
Shuts off location services


This of course helps to keep the device save battery when locked, though Alcatel Pixi 4 might not have the best battery.