My favourite phone ever designed was the BlackBerry Priv. It was an Android-based smartphone with a full-sized (5.4in) touchscreen, an completely-hidden slide-out physical keyboard, that also doubled as a touch-sensitive pad.
You could "swipe" (touchscreen-style) over the keys, and then press down on those same physical keys simultaneously. But you could also slide it back into the phone, and use it just like any other iPhone or Android ever made.
It's the best of both worlds, really.