The phone is a piece of engineering marvel: when unfolded, the device measures only 3.6mm thick, making it the new thinnest portable computing device in the world. This slimness is needed, because when completely folded up, it is essentially three stacked layers, which then does increase thickness to 12.8mm.

The report says Samsung will launch its rollable phone with a comically large 12.4-inch display. That would be much larger than Huawei's Mate XT Ultimate Design, which features a 10.2-inch tri-fold display. Sure, 10.2 inches is enormous, but you could have a phone with a screen about one foot in size.