iPhone has this too if you lightly tap on the home button.
For the iPhone X it's also there: https://mashable.com/2017/10/31/how-to-use-iphone-x-reachabi...
Not exactly convenient though.
At this point why not just give people a real overlapping window manager?
My LG G7 has a two window mode (you can slide the division between the two windows up and down). Also there are now many apps that can run in small floating windows, most notably video players.
Samsung does, at least on my S8
Re:Bring Back the SE
by noisem4ker on Tuesday September 10, 2019 @04:39PM
(#20933441)
S7 too. Maybe earlier models.
On Samsung Galaxy S6 and later models, one can tap the home button three times to shrink the screen so that everything can be reached with one thumb. It's called "one-handed mode". I can't say I've used it very often, but when I need it, it's there.