In my opinion , the best kind of   Cellular Data Plan  for a  " 5G Laptop that can make phone calls and answer phone calls  like a 5G smartphone " ,  is a package that offer       "Unlimited 5G Data", which is    reasonably/moderately   priced  by  the Telcos . This is a good move to increase the adoption of   " 5G Laptops that can make phone calls and answer phone calls  like a 5G smartphone" and to accelerate progress and development in a country in the field of Education , etc., etc.  When many people use  " 5G Laptops that can make phone calls and answer phone calls  like a 5G smartphone",  hopefully, the price of that 5G machine may drop .  In my opinion , 5G is better on    " 5G Laptops that can make phone calls and answer phone calls  like a 5G smartphone"    than on a 5G smartphone . Anyway, we all have different opinions .