The term "ASUS ZenFone" refers to a lineup of smartphones developed by ASUSTeK Computer, commonly known as ASUS. The name is derived from the combination of two words - 'Zen' which represents the company's focus on design and user experience, and 'Phone', indicating that it is a mobile device.
The ZenFone series was first introduced in 2014 and has since become one of ASUS' most popular product lines. These smartphones are known for their sleek designs, powerful performance, and innovative features such as the use of a laser autofocus system on some models.
Overall, "ASUS ZenFone" refers to a range of high-quality mobile devices that offer both style and substance.