[ 15.6 inches "detachable" Windows 10 Cellular Laptop with built-in DVD-RW Player ] is a good example of a  Laptop/Tablet/Smartphone(ALL-in-ONE)  device .  

A  Laptop/Tablet/Smartphone(ALL-in-ONE)  device or machine can take in many forms , shapes and sizes .  

A real  Laptop/Tablet/Smartphone ( ALL-in-ONE )  machine ,  I believe ,  can be a :

• 
  
• 1.   15.6 inches Cellular Laptop ( foldable 360
•      degrees/detachable) _  15.6 inches Cellular Laptop ( foldable 360
•      degrees/detachable)  is  a Cellular Laptop and a  Cellular Tablet  and a  Cellular Telephone combine into one device , combine into one machine . It is like having  a Smartphone but having it on your Laptop . ( there is no need to purchase a Smartphone , there is no need to buy a  Smartphone , there is no need to carry a  Smartphone because the   15.6 inches Cellular Laptop has    phone/telephone   functionality  just like an Android Smartphone  ) . The  beautiful part is , moving from laptop to tablet , moving from   " laptop mode "   to     " tablet mode "    and vice versa has never been easier than this , has never been easier than this .
• 
  
• 2.   15.6 inches Cellular  Tablet _   15.6 inches Cellular  Tablet  is a  Cellular Tablet  and a  Cellular Telephone combine into one device , combine into one machine , and when connected to a  wireless/bluetooth    keyboard   and  a  wireless/bluetooth  mouse ,  it can become a   PC/Desktop/Laptop .  It is like having  a Smartphone but having it on your Tablet ( there is no need to purchase a Smartphone , there is no need to buy a  Smartphone , there is no need to carry a  Smartphone because the   15.6 inches Cellular Tablet has    phone/telephone   functionality  just like an Android Smartphone )
•    
• 3.  Folding  Smartphone _ A  folding  Smartphone ( a  folding Smartphone that I envisioned  is  a  folding  smartphone , whatever the design is ,  that  can unfold   into  a  15.6 inches  Tablet ,  a  smartphone   that can  unfold   into  a  15.6 inches  lightweight  Tablet  1 )    after  transforming  into  a   15.6 inches  lightweight  Tablet  and when   connected to a  wireless/bluetooth    keyboard   and  a  wireless/bluetooth  mouse ,  the    15.6 inches  lightweight  Tablet   can become a   PC/Desktop/Laptop   Having said that , a folding Smartphone is a  Cellular Telephone and a  Cellular Tablet and a Cellular Laptop   , combine into one machine .  There is no need to purchase a  Cellular Tablet and a  Cellular Laptop ,  there is no need to buy a  Cellular Tablet and a  Cellular Laptop , there is no need to carry a  Cellular Tablet and a  Cellular Laptop because    
• a  folding  Smartphone is the Tablet and the PC !
• 
  
• Laptop/Tablet/Smartphone                        ( ALL-in-ONE )  machine _  For a real  Laptop/Tablet/Smartphone ( ALL-in-ONE )  machine  to be  successful ,    for a real  Laptop/Tablet/Smartphone ( ALL-in-   ONE )  machine  to make their way into the real world , the    

• chip/SoC   manufacturers ,  the  Cellular Laptop   manufacturers , the  OS providers ,  the   carriers/telcos ,   MUST COLLABORATE WITH EACH  OTHER IN   

               ORDER TO PROVIDE   THE  CAPABILITIES  SO

           THAT  ALL    CELLULAR  LAPTOP ( 4G LTE or  5G )

           CAN OPERATE  LIKE  A   4G   SMARTPHONE ,  CAN

           OPERATE LIKE    A    5G  SMARTPHONE .

The above picture is for illustrative purposes .  [ 15.6 inches "detachable" Windows 10 Cellular Laptop with built-in DVD-RW Player ] 
(can transform a  Cellular Laptop into a  Cellular Tablet and vice versa)

The above picture is for illustrative purposes only . [ 15.6 inches "detachable" Windows 10 Cellular Laptop with built-in DVD-RW Player ] in   LAPTOP MODE .

The above picture is for illustrative purposes only . [ 15.6 inches "detachable" Windows 10 Cellular Laptop with built-in DVD-RW Player ] in   TABLET  MODE .

The above picture is for illustrative purposes only . [ 15.6 inches "detachable" Windows 10 Cellular Laptop with built-in DVD-RW Player ] in   TABLET  MODE .