You must log in or register to comment.
Bifold means something that folds into two parts. Consider the bifold wallet or bifold door.
How can something fold into one part then ?
I guess the same way you slice something into one piece. Bisect is one less than trisect, so what’s one less than bisect?
Maybe the problem is that the phone is rectangular. I bet they could do it with a polygon with just two fewer sides. ;)