Feature phone is a term used to describe a low-end mobile phone that has less computing ability than a smartphone。
feature phone指的是那种计算能力比不上smart phone的低端手机。
The term was originally used to describe mobile phones that had features that weren't available on most other contemporary mobile phones, and smartphone and feature phone were not mutually exclusive categories. As mobile phone technology advanced, newer low-end phones were categorized as feature phones。