Battery low issues

[Ankitx02]

Mine samsung galaxy A7 Lite battery backup has severely reduced!!! How can I improve it 

[Jameswalter]

Check Battery Usage. 
Optimize Samsung Phone. 
Enable Device Protection. 
Check Location Services. 
Use Dark Mode. 
Disable Always On Display. 
Change Display Resolution. 
Change Display Refresh Rate.

Regards,
James