By the definition of a computer, justify if a mobile phone and a calculator are computers or not

It depends on the features of the Calculator but most mobile phones are computers.

Explanation:

A computer is an electronic device that can accept data (Both can), process the data (both can), produce the results of the processed data (both can) and store both result and initial data (some calculators can, some cannot but most mobile phones can).

In my opinion, they are computers but that's dependent on their features especially storage.