When subscribe to a Cellular Data Plan from an Internet Service Provider or a  Telco , the  [ 15.6 inches   "Touchscreen"          "360 degrees foldable"  Windows 10 5G Cellular Laptop ] or the   [ 15.6 inches   "Touchscreen"    "detachable"  Windows 10  5G Cellular Laptop ]  comes with a phone number or a personal phone number and as a result we can make telephone calls to to any  landline  telephone/number  [ 1 ] and reply telephone calls from any  landline  telephone/number  [ 1 ] and make phone calls to any 5G smartphone and reply phone calls from any 5G smartphone