Hi Tom, My baby boy has a calculator he uses as if it were a smartphone. He sees us communicating via our smartphones, calling grandma, type a whatsapp. He wants to do this too :) So he uses his calculator (size of a smartphone) types something or 'calls' grandma :) There's one great article from Modern Parent: it's a viral article by Stephany

https://medium.com/forge/the-best-advice-i-got-about-my-childs-smartphone-addiction-72177ebcdbac