Which products rely on the ability of ionic compounds to conduct electricity?

Cell phones and remote control toys are the products which rely on the ability of ionic compounds to conduct electricity.

Explanation:

Ionic compounds are those which are formed between electronegative and electropositive elements. So some of the electrons will be always free in these compounds. Among the options given in the question, cell phones and remote control toys are the products which uses ionic products. As most of the semiconducting compounds or electronic compounds are ionic in nature. And cell phones and remote control toys uses the movement of electrons from ionic compounds to do the work.

Thus, cell phones and remote control toys are the products which rely on the ability of ionic compounds to conduct electricity.