Instead of slider hinge in the   “The Planet Computer Astro Slide 5G Transformer”   smartphone , perhaps we could use  a                        " 360 degrees foldable "  hinge [ 1 ]  just like in the  [ Planet Computer  15.6 inches  Touchscreen  Triple-boot  Astro   "360 degrees foldable"  INTEL-based  Windows 10   5G Transformer Smartphone with built-in DVD-RW Player ]   machine  , which I envisioned .     Since  the   [ Planet Computer  15.6 inches  Touchscreen   Triple-boot   Astro "360 degrees foldable"  INTEL-based  Windows 10   5G Transformer Smartphone with built-in DVD-RW Player ]  machine is   "360 degrees foldable"  ,  it can serve as a  Laptop , it can serve as a Tablet , and above all , it can make phone calls and answer phone calls just like a 5G smartphone , in  TABLET MODE , in LAPTOP MODE and in TENT MODE , using a big screen ,  that is ,  15.6 inches .