After dual sim, this was inevitable — a dual smart phone that works both sides.

While main screen works as a normal android phone, second screen on the reverse can help you read emails, send text messages and post on social media.

Developed by a Moscow firm, YotaPhone would be the first to be available in the U.S. when it goes on sale later this year, before hitting Asian markets.

Readers can also read books and newspapers on rear screen.

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