The only way I know to activate 3d touch (Force touch) is:
Step 1: Install Nova Launcher
Step 2: Long press on empty space of home screen -> Widgets -> Nova Launcher Activities Shortcut
Step 3: Scroll down -> Settings -> 3D Touch
Step 4: Go to home screen where you put the icon, press it and enable it.
Done.
By the way, it doesn't work on mi launcher probably because xiaomi doesn't want 3/64 users use it BUT, MAYBE, Eu devs can enable it.
Press like if I've helped you.
Step 1: Install Nova Launcher
Step 2: Long press on empty space of home screen -> Widgets -> Nova Launcher Activities Shortcut
Step 3: Scroll down -> Settings -> 3D Touch
Step 4: Go to home screen where you put the icon, press it and enable it.
Done.
By the way, it doesn't work on mi launcher probably because xiaomi doesn't want 3/64 users use it BUT, MAYBE, Eu devs can enable it.
Press like if I've helped you.