Samsung has unveiled its latest range of flagship smartphones, with three models ranging in price from £769 ($799) to £1,149 ($1,199). The S21 range from the South Korean tech giant features an entry-level model, the mid-range Plus, and the Ultra – which is the first S Series phone to be compatible with the Samsung's S-Pen stylus. The stand-out feature on all three devices is the upgraded rear camera system, which was heavily leaked ahead of today's announcement and features night and portrait mode as well as its 100x'space zoom'. Pre-orders of the handsets open today, and the phones will be available as of January 29. The Ultra also comes with S-pen compatibility, the first Galaxy device to do so.