"To replace a laptop" means to find a new device or machine that will take the place of a laptop computer, performing the same functions and tasks that a laptop can do. Full definition
But by occasionally replacing the laptop with a pen, learning happens, which is why we got into this business in the first place. (edutopia.org)
By making Android so robust it has the possibility of replacing a laptop for even serious users, leaving real PC's for those only in the heavy content creation business. (gigaom.com)
This powerful tablet can completely replace a laptop for many people. (heavy.com)