Xperia xz dual sim doesn't show the "double tap to sleep" feature

[OtG14]

I opened the home settings and no option for me to turn on the double tap to sleep feature

[dquilon]

What version do you have installed... 

My F8332 has a Home Launcher v. 10.2.A.1.28 and it has the double tap to sleep option. 

Maybe it varies from country to country as well