What feature distinguishes mobile devices from traditional computers?

Mobile devices are often distinguished by their portability, and one of the key aspects of this portability is their weight. Generally, mobile devices such as smartphones and tablets are designed to be lightweight and easily carried, typically weighing less than two pounds. This allows users to conveniently transport them, making them suitable for on-the-go use.

While other options have some merit, they do not universally apply to all mobile devices. For instance, larger screen sizes are more characteristic of traditional computers or tablets rather than mobile devices exclusively. Similarly, while many mobile devices do operate on battery power, not all of them do so exclusively; some can be plugged into power sources. The claim that they require a constant internet connection is also not accurate since mobile devices can operate offline with locally stored data and applications. Thus, the distinguishing feature related to weight highlights the inherent design goal of mobile devices to be highly portable, setting them aside from traditional, heavier computers.