Dumbphone (noun)

Merriam-Webster: cell phone that does not include advanced software features (such as email or an internet browser) typically found on smartphones [1]

Wikipedia: A feature phone (also spelled featurephone), brick phone, or dumbphone, is a mobile phone that evokes the form factor of earlier generation of mobile phones, typically from the 1990s and 2000s, featuring a press-button based inputs and a small non-touch display. Feature phones tend to use an embedded operating system with a small and simple graphical user interface, unlike large and complex mobile operating system on a modern smartphone.

The functions of feature phones are limited compared to smartphones. Following the rise of smartphones, the feature phone has sometimes been referred to as a dumbphone. However, some feature phones can provide functions found in smartphones, including internet capabilities, apps, and mobile games. [2]

DIGITALIZATION (noun)

Merriam-Webster: the process of converting something to digital form [3]