It was the first phone to feature virtual navigation buttons, which would in theory allow device makers to one day create a device with no bezel. (thenextweb.com)
The device also was the first to feature virtual navigation buttons in place of physical ones, providing a glimpse of the future, where the size of phone screens wouldn't need to be constricted to allow room for buttons. (businessinsider.my)
Unlike similar devices from HTC and Samsung, Lenovo flanks the centred fingerprint sensor with nothing but free space; the company continues to use Android's virtual navigation buttons as it has since the original Moto X in 2013. (androidcentral.com)