abstract:A softkey or soft key is a button flexibly programmable to invoke any of a number of functions rather than being associated with a single fixed function or a fixed set of functions. A softkey is often located alongside a display device of a portable device such as a cellular phone, where the button invokes a function described by the text at that moment shown adjacent to the button on the display.
One of the 3, 452 enhancements Meizu implemented is the "Smart Bar, " where Meizu has somehow merged the app's bottom menu bar and the system's virtual softkey bar for the sake of screen space and intuitiveness.
One SU (especially around the camera), but flip it around and you'll notice what appears to be a pair of front-facing stereo speakers (aka BoomSound as it's marketed as for the One), as well as the same dual softkey implementation on the company's latest flagship.