Tens of millions of people face huge challenges in life because they cannot read or write. In Ivory Coast, a so-called “Superphone” using a vocal assistant that responds to commands in a local language is being pitched to the large segment of the population — as many as 40 percent — who are illiterate. Developed and assembled locally, the phone is designed to make everyday tasks more accessible, from understanding a document and checking a bank balance to communicating with government agencies. The smartphone uses an operating system called “Kone” that is unique to the Cerco company, and covers 17 languages spoken in Ivory Coast, including Baoule, Bete, and Dioula, as well as 50 other African languages. Cerco hopes to expand this to 1,000 languages, reaching half of the continent’s population, thanks to help from a network of 3,000 volunteers. The goal is to address the “frustration” illiterate people feel with technology that requires them to be able to read or write or spell effectively, said Cerco president Alain Capo-Chichi, a Benin national.