United Kingdom, June 11 -- David Harbour often ditches his smart phone for months at a time because it helps him focus on "the things that are important".

The Stranger Things star has revealed he regularly gives himself a digital detox by swapping his device for an old-fashioned flip phone which isn't connected to the Internet because it takes his focus off replying to emails and online shoppping.

He told Interview magazine: "I go through phases where I get rid of it entirely and go flip phone ... Having a flip phone is an amazing experience because you actually have to call people, and you don't deal with emails until you get home ...

"I've gone four or five months at a time ... I think it's a product of the [smart] phone that you thi...