I Have Seen Mobile Telephones,

that become bigger by folding out,

but this one is so, so much better, Chinese electronics company OPPO has revealed a concept smart phone is called the X 2021, which expands by rolling out its screen on a miniature conveyor belt, the OLED screen in the X 2021 simply unfurls like a scroll, growing from 17 centimetres to 18.7 centimetres at the slide of a button,

this is possible through a trio of technological innovations, centred around the roll-out mechanism, the flexible OLED screen is laminated onto a steel "warp track", which resembles a conveyor belt or the tracks of a tank, allowing it to be rolled out when needed while strengthening it and maintaining its shape, a "two-in-one plate" makes up the body of the phone, which essentially consists of comb-like units that are interlaced to form a single surface behind the screen, when moving into tablet mode, these are cleaved apart to accommodate the display's expansion, while always leaving a certain number of "teeth" supporting the centre of the display to prevent it from collapsing inward,

the tablet-sized screen is designed for gaming and reading ebooks, "Compared with the fixed screen size of a folding screen, the on-the-go adjustment of the rollable screen promises endless possibilities and can even enhance office productivity and entertainment experiences," said OPPO. Although the x 2021 was presented at OPPO's Inno Day, now the down side, the company has stated that there are no immediate plans to make it commercially available, but you never know next year it may well be here!