15.6 inches  Linux  Laptop/Tablet/Smartphone (All-in-One) , which I envisioned , is a machine which is a cellular Laptop (which has the physical appearance of a foldable Laptop  or  a detachable Laptop ) or it can be a machine like a  folding Smartphone ( which can unfold into a  15.6 inches  Tablet ) that requires  a   cellular/data   plan for  voice calling , just like a traditional Smartphone .

 

1. The    15.6 inches  Linux     Laptop/Tablet/Smartphone(All-in-One) which I envision  is a cellular Laptop ,  is a  machine  with a SIM Card  Slot that require a   cellular/data   plan for voice calling  just like an Android  Smartphone .  They  are   4G/4G LTE/5G  Laptops ,  they are cellular Laptops that operate like Mobile Phones  or  Smartphones . They can make telephone calls or receive telephone calls  , send sms ,  send emails ,  WhatsApp , WeChat , Snapchat , Facebook , Instagram , Telegram , Zoom , Skype , etc.,  just like a  Mobile Phones .  Since this  machine  behave like a Mobile Phone , we got to have a data plan , we got to have a cellular plan with a Telco in order to make telephone calls and receive telephone calls   and to stay connected to  the  Internet at all times .  With this machine ,  I  envision that it enables us to stay connected to the Internet at all times without the dependency of a  Smartphone , without the dependency of another device .   With this machine , I envision that we don't have to buy or puchase a  Smartphone .  And best of all , we have a  PC/Laptop , and a  Tablet and a  Smartphone built into one device , built into one machine to meet all our computer hardware needs . There is no need to carry 3 devices or 4 devices . We carry only  1 device . We only carry 1 item .  WE ONLY CARRY 1 UNIT OF 15.6 INCHES   LINUX   LAPTOP/TABLET/SMARTPHONE(ALL-IN-ONE) .  Anyway , it is many times better to carry this than to carry this .

2.  Also on the money side , there are added cost for getting a  cellular/data  plan for a  Smartphone and  a  cellular data plan for   a   4G/5G  Laptop ( cellular  Laptop ) .  Meaning we got to have  2    cellular/data    plan ,  one   cellular/data   for having  a   Smartphone and   another   one    cellular/data    plan    for   having    a                                           4G/5G  Laptop ( cellular  Laptop ) .   But  if  we  have a   15.6 inches  Linux  Laptop/Tablet/Smartphone (All-in-One) , we only require one      cellular/data    plan for it .   Anyway ,  just because we have a mobile-broadband-capable device  ,  it does not mean that we are relying on    3G/4G/4G LTE/5G    for 24 hours to access the Internet .  Sometimes we rely on Wi-Fi ( e.g.  Hotspots ,  Home Wireless Router , etc., etc. )   inside the   15.6 inches  Linux     Laptop/Tablet/Smartphone (ALL-in-One)   to access the Internet , especially when we go back home to our house after work using our  Home Wireless  Router ,  and this help to save cost .  

3.  With the  15.6 inches   Linux   Laptop/Tablet/Smartphone (All-in-One) , we can access the Internet and do   phone/voice    calling  at  the same time ,  simultaneously , without having to carry an extra   Phone/Smartphone ,  without having to   buy/purchase   an extra    Phone/Smartphone .

4. There is no need to purchase a  Smartphone  in order  to tether our   Android   Phone/Smartphone  and share its  Internet connection with the    15.6  inches   Linux   Laptop/Tablet/Smartphone (All-in-One)  because  the   15.6  inches   Linux   Laptop/Tablet/Smartphone (All-in-One)  have  a     built-in     3G/4G/4G LTE/5G     module  that can do     phone/voice    calling   and   high-speed  Internet  access  at  the same time .