Default getting back Stamina mod for xperia phones only

Hello guys. This post is only for xperia users only.
Many of u guys face problems while changing stock based roms . Some of thoose rom does not have a good battery performance or a good working xperia Stamina mod. Thoose who have Stamina mod already But don't work. This is a way to get back that mod.
go to build prop and add this

# Modem power save enabled
# power save & sleep mode enabled

worked on xperia v,sp,t
Don't forget to press the thanks button.