If all of this sounds familiar to what Apple is doing with the Action button on newer iPhones, you wouldn’t be wrong. After all, the iconic Alert Slider was also inspired by the original iPhone ...

OnePlus and OPPO are reportedly dropping the alert slider from future flagships in favor of a customizable action button. A new leak has revealed that it may be called the “Magic Cube Key.” ...

What is clear, however, based on DCS' track record, is that OnePlus is at least thinking of/experimenting with an Action Button-like key to replace its alert slider. The button will be remappable.