Make a  5G  smartphone and increase the screen size to  15.6 inches instead of the traditional screen size of  6 inches or 7 inches and it will become a  15.6 inches  5G smartphone . This  15.6 inches 5G smartphone  can serve as a  15.6 inches 5G Tablet ( which can make phone calls and answer phone calls like a 5G smartphone) and when connected to a    wireless/bluetooth   keyboard  and  a    wireless/bluetooth   mouse  it can serve as a  15.6 inches 5G   Laptop ( which can make phone calls and answer phone calls like a 5G smartphone) .