Devices that offer the reading experience of an electronic reader in a form factor similar to a mobile telephone constitute a specific segment of the e-reader market. These units prioritize portability, allowing users to carry a digital library in a compact format. For example, an individual may prefer such a device for reading during commutes or in situations where larger e-readers are impractical.
The appeal of this design lies in its enhanced convenience. Its reduced dimensions facilitate single-handed operation and ease of storage. Historically, early e-readers were often bulky, limiting their portability. The development of smaller, more efficient components enabled the creation of these highly portable reading devices, expanding the potential audience for electronic reading materials.