On: Signal and Giphy

[TiredOfLife]

It's not an Android phone. Android has either on screen Navigation Bar or Physical Navigation Bar not both.

[mcsniff → TiredOfLife]

What are you on about? You can enable on-screen buttons while still having physical capacitive buttons.

http://m.imgur.com/u5hcJYQ

Many 3rd party custom ROMs have the feature, including CyanogenMod, the most widespread open-source build of AOSP.

[TiredOfLife → mcsniff]

Not on stock Samsung phones.

[lorenzhs → TiredOfLife]

So they made a screencast and blended it with a video of a hand touching a phone to avoid shadows and improve image quality. Is that really your takeaway from the article?